JP6705374B2 - Electronic musical instruments and electronic musical instrument systems - Google Patents

Description

The present invention relates to an electronic musical instrument and an electronic musical instrument system including the electronic musical instrument.

There are various electronic musical instruments that can be connected to an external sound source. For example, in the performance assistance system described in Patent Document 1, an electronic musical instrument is connected to a chord information generation device via the performance assistance device. The electronic musical instrument, the performance assisting device, and the chord information generating device each include a sound source/effect circuit. When the chord information generating device and the performance assisting device are connected to each other by wireless communication, the performance assisting function becomes effective and a local off command is automatically transmitted to the electronic musical instrument. In this case, the performance information from the performance operator of the electronic musical instrument is not directly supplied to the tone generator/effect circuit (musical tone generation section) of the electronic musical instrument.

The performance assisting device converts the pitch of the note information received from the electronic musical instrument into a pitch suitable for the chord information received from the chord information generating device based on the set conversion characteristic, and converts the converted note information into an electronic note. Send to the instrument. On the other hand, the local on command is automatically transmitted to the electronic musical instrument when the wireless communication between the chord information generating device and the performance assisting device is disconnected or when the performance assisting function is turned off. Performance information from the performance operator of the electronic musical instrument is supplied to the sound source/effect circuit (musical sound generation unit) of the electronic musical instrument.

JP, 2010-231053, A

In the performance assisting system described in Patent Document 1, it is possible to use the sound source/effect circuit of the chord information generating device or the performance assisting device as an external sound source of the electronic musical instrument. For example, it is possible to supply performance information by an operation of a performance operator of an electronic musical instrument to an external sound source, and generate a musical tone based on an acoustic signal obtained by the external sound source from the electronic musical instrument.

However, the time from the generation of the sounding instruction signal to the generation of the musical sound based on the acoustic signal generated by the internal sound source of the electronic musical instrument and the time from the generation of the sounding instruction signal to the generation of the musical sound based on the acoustic signal generated by the external sound source. There may be cases where and are different. That is, the sound generation timing based on the sound generation instruction signal when the internal sound source is used and the sound generation timing based on the sound generation instruction signal when the external sound source is used may deviate from each other. As a result, the user feels uncomfortable.

An object of the present invention is to provide an electronic musical instrument and an electronic musical instrument system capable of adjusting a sounding timing based on a sounding instruction signal.

An electronic musical instrument according to a first aspect of the present invention includes a signal generating means for generating a sounding instruction signal, an internal sound source for generating an internal acoustic signal in response to the sounding instruction signal generated by the signal generating means, and a sound generated by the signal generating means. Changing means for changing the value of the internal delay time from the generation of the instruction signal to the generation of the sound based on the internal acoustic signal, and the output means connected to the external sound source for generating the external acoustic signal and outputting the sounding instruction signal to the external sound source. Switching means for switching a first state in which an external sound source generates an external acoustic signal in response to a sounding instruction signal to a second state in which an internal sound source generates an internal acoustic signal in response to a sounding instruction signal. The changing means includes a time from the generation of the sounding instruction signal in the first state to the generation of a sound based on the external acoustic signal and the second state when the first state is switched to the second state. The value of the internal delay time is changed so that the time from the generation of the sounding instruction signal in to the generation of the sound based on the internal acoustic signal becomes equal.

In the electronic musical instrument, the value of the internal delay time from the generation of the sounding instruction signal to the generation of the sound based on the internal acoustic signal is changed. Thereby, it becomes possible to adjust the sounding timing based on the sounding instruction signal.

Further, according to the above configuration, when the external acoustic signal supplied from the external sound source is out of order in the first state in which the external sound source generates the external acoustic signal in response to the sounding instruction signal, The state 1 is switched to the second state. Thereby, an internal sound signal is generated by the internal sound source in response to the sounding instruction signal. At this time, the internal delay time can be set to different values in the first state and the second state. Thereby, the user can adjust the sounding timing of the internal acoustic signal in consideration of the difference between the sounding timing of the external acoustic signal and the sounding timing of the internal acoustic signal. When the electronic musical instrument has a plurality of channels, only the channels that can be switched from the first state using the external sound source to the second state using the internal sound source are in the first state and the second state. The internal delay times may be set to different values.

Furthermore, when the first state is switched to the second state, the changing means sets the time from the generation of the sounding instruction signal in the first state to the generation of the sound based on the external acoustic signal and the second state. from the occurrence of sound generation instruction signal while the time and to the generation of sound based on the internal sound signal to change the value of the internal delay time to be equal. In this case, the time from the generation of the sound generation instruction signal to the generation of the sound becomes equal in the first state and the second state. Therefore, even when a malfunction occurs in the external acoustic signal, it is possible to continue sounding while suppressing the user's discomfort.

An electronic musical instrument according to a second aspect of the present invention includes a signal generating means for generating a sounding instruction signal, an internal sound source for generating an internal acoustic signal in response to the sounding instruction signal generated by the signal generating means, and a sound generated by the signal generating means. Changing means for changing the value of the internal delay time from the generation of the instruction signal to the generation of the sound based on the internal acoustic signal, and the output means connected to the external sound source for generating the external acoustic signal and outputting the sounding instruction signal to the external sound source. Switching means for switching a first state in which an external sound source generates an external acoustic signal in response to a sounding instruction signal to a second state in which an internal sound source generates an internal acoustic signal in response to a sounding instruction signal. An input means for receiving an external acoustic signal generated by an external sound source as a return acoustic signal, a time from generation of a sounding instruction signal in the first state to generation of a sound based on the external acoustic signal, and sounding instruction in the second state e Bei and estimating means for estimating the occurrence of the signal based on the difference between the time until the generation of sound based on the internal sound signal in the feedback acoustic signal changing means, the first state is switched to the second state If the, to change on the basis of the difference estimated by the estimating means the value of the internal delay time. In this case, the value of the internal delay time that should be set when the first state is switched to the second state is automatically changed based on the estimated difference.

When the sounding instruction signal indicates the simultaneous generation of a plurality of sounds, the estimating means may use one predetermined return sound signal among the plurality of return sound signals corresponding to the plurality of sounds for the estimation. In this case, the estimation process is simplified by using one feedback acoustic signal for estimation.

The estimating means generates an internal acoustic signal by an internal sound source at a predetermined timing in the first state, and learns a value of the internal delay time based on a time difference between the generated internal acoustic signal and the return acoustic signal. Means may be included. In this case, an appropriate value of the internal delay time can be automatically acquired.

The electronic musical instrument further comprises detection means for detecting the state of input of the return sound signal to the input means, and the switching means changes the state of input of the return sound signal to the input means from the normal state of input of the return sound signal to the input means. The first state may be switched to the second state in response to the transition to the abnormal input state. According to this configuration, the electronic musical instrument can be appropriately switched from the first state to the second state when a malfunction occurs in the external acoustic signal supplied from the external sound source.

The switching unit switches the second state to the first state in response to a transition from a state where the input of the return sound signal to the input unit is not normal to a state where the input of the return sound signal to the input unit is normal. May be. According to this configuration, the electronic musical instrument can be appropriately switched from the second state to the first state when the malfunction of the external acoustic signal supplied from the external sound source is resolved.

The electronic musical instrument may have a plurality of channels, and the changing unit may change the value of the internal delay time for each of the plurality of channels. This makes it possible to set an appropriate value for the internal delay time for each channel.

An electronic musical instrument system according to a third aspect of the present invention includes the above electronic musical instrument, one or a plurality of external sound sources connected to the electronic musical instrument, an internal acoustic signal generated by the internal sound source of the electronic musical instrument, and one or a plurality of external sound sources. Sound generating means for generating a sound based on an external acoustic signal generated by. According to the electronic musical instrument system, it is possible to adjust the sounding timing by the internal sound source of the electronic musical instrument. Therefore, when the internal sound source is used, the time from the generation of the sounding instruction signal to the sounding and the sound generation by the external sound source are The time lag from the generation of the instruction signal to the sound generation can be adjusted.

According to the present invention, it is possible to adjust the timing of sounding based on the sounding instruction signal.

It is a block diagram which shows the structure of the electronic musical instrument system which concerns on one embodiment of this invention. It is a block diagram which shows the functional structure of the sound source control part of FIG. 6 is a flowchart showing a sound source control process performed by a sound source control unit. 6 is a flowchart showing a sound source control process performed by a sound source control unit. It is a figure for explaining an example of area setting of a parameter. It is a figure for demonstrating the other example of the area setting of a parameter.

Hereinafter, electronic musical instruments and electronic musical instrument systems according to embodiments of the present invention will be described in detail with reference to the drawings.

(1) Configuration of Electronic Musical Instrument System FIG. 1 is a block diagram showing the configuration of an electronic musical instrument system according to an embodiment of the present invention. The electronic musical instrument system 100 of FIG. 1 is composed of the electronic musical instrument 1 and one or more external sound sources 20. In the present embodiment, a plurality of external sound sources 20a and 20b are connected to the electronic musical instrument 1. Hereinafter, when distinguishing each of the plurality of external sound sources 20, each external sound source 20 is referred to as an external sound source 20a or an external sound source 20b.

The electronic musical instrument 1 includes a performance operator 2, a detection circuit 3, a setting operator 4, a detection circuit 5, a display 6 and a display circuit 7. The performance operator 2 includes a keyboard or a drum pad. The performance operator 2 is connected to the bus 19 via the detection circuit 3, and performance data based on the performance operation of the user is input by the performance operator 2. The setting operator 4 includes a switch that is turned on and off, a rotary encoder that is turned, a linear encoder that is slid, and the like, and is connected to the bus 19 via the detection circuit 5. The setting operator 4 is used for switching tones, adjusting the volume, turning the power on/off, and performing various settings.

The display 6 is connected to the bus 19 via the display circuit 7. The display 6 displays a music title, a channel number, a tone color name, a parameter value, a musical score, or other various information. The display 6 may be a touch panel display. In this case, the user can instruct various operations by operating the display 6.

The electronic musical instrument 1 further includes a RAM (random access memory) 9, a ROM (read only memory) 10, a CPU (central processing unit) 11, a timer 12, a storage device 13, and a communication I/F (interface) 14. The RAM 9, the ROM 10, the CPU 11, the storage device 13, and the communication I/F 14 are connected to the bus 19, and the timer 12 is connected to the CPU 11. An external device such as the external storage device 15 may be connected to the bus 19 via the communication I/F 14. The RAM 9, the ROM 10, and the CPU 11 constitute the sound source control unit 8.

The RAM 9 is, for example, a volatile memory, is used as a work area of the CPU 11, and temporarily stores various data. The ROM 10 is composed of, for example, a non-volatile memory and stores computer programs such as a system program and a sound source control program. The CPU 11 executes a sound source control program stored in the ROM 10 on the RAM 9 to perform a sound source control process described later. The timer 12 gives time information such as the current time to the CPU 11.

The storage device 13 includes a storage medium such as a hard disk, an optical disk, a magnetic disk or a memory card. The storage device 13 stores one or more pieces of music data. The music data is an audio signal (audio signal) representing a music. Here, the acoustic signal is composed of a plurality of sampling values obtained by sampling a waveform signal representing a change in sound at a predetermined sampling period. Music data may be generated based on the performance data input from the performance operator 2 and stored in the storage device 13. The performance data and the music data include a pronunciation instruction signal described later. The sound source control program may be stored in the storage device 13. Like the storage device 13, the external storage device 15 may include a storage medium such as a hard disk, an optical disk, a magnetic disk, or a memory card, and may store various data such as music data or a sound source control program.

The sound source control program according to the present embodiment may be provided in a form stored in a computer-readable recording medium and installed in ROM 10 or storage device 13. Further, when the communication I/F 14 is connected to the communication network, the sound source control program distributed from the server connected to the communication network may be installed in the ROM 10 or the storage device 13.

The electronic musical instrument 1 further includes an internal sound source 16, a sound system 17, and a delay device 18. The internal sound source 16 is connected to the bus 19, and the delay device 18 is connected to the internal sound source 16 and the bus 19. Further, the sound system 17 is connected to the delay device 18 and the bus 19. The internal sound source 16 generates an acoustic signal based on the performance data input from the performance operator 2 or the music data provided from the storage device 13 and imparts an acoustic effect to the acoustic signal. The delay device 18 is composed of, for example, a delay circuit including a delay buffer or the like, and transmits the sound signal generated in the internal sound source 16 to the sound system 17 while delaying it. Further, the delay device 18 is configured to be able to change the delay time of the acoustic signal to an arbitrary time.

Each external sound source 20 is connected to the communication I/F 14 and generates an acoustic signal based on the performance data input from the performance operator 2 or the music data provided from the storage device 13 and produces an acoustic effect on the acoustic signal. Give. Further, each external sound source 20 outputs the generated acoustic signal to the communication I/F 14. The sound system 17 includes a D/A (digital/analog) conversion circuit, an amplifier and a speaker, and generates a musical sound based on an acoustic signal given from the internal sound source 16 or the external sound source 20.

In the present embodiment, the communication I/F 14 includes a MIDI (Musical Instrument Digital Interface) input terminal, a MIDI output terminal, an audio input terminal, an audio output terminal, and the like. The communication I/F 14 and each external sound source 20 are connected by a MIDI cable and an audio cable, and perform communication based on the MIDI standard. Further, in the present embodiment, the electronic musical instrument 1 has a plurality of MIDI channels (hereinafter simply referred to as channels). Different channels CH1 and CH3 are assigned to the plurality of external sound sources 20a and 20b, and a channel CH2 is assigned to the internal sound source 16.

(2) Operation of Sound Source Control Unit The user of the electronic musical instrument 1 of FIG. 1 operates the setting operator 4 to set a desired tone color selected from a plurality of tones in the internal tone generator 16 and the external tone generator 20. be able to. When the sound generation instruction signal is given, the internal sound source 16 generates an acoustic signal of the set tone color. The external sound source 20, when given the sounding instruction signal, generates an acoustic signal of the set tone color. As a result, the user can play the electronic musical instrument 1 while reproducing musical tones of various tones from the sound system 17. Hereinafter, the acoustic signal generated by the internal sound source 16 is called an internal acoustic signal, and the acoustic signal generated by the external sound source 20 is called an external acoustic signal.

Regarding the channel assigned to the external sound source 20, a connection failure between the external sound source 20 and the communication I/F 14, a disconnection of communication between the external sound source 20 and the communication I/F 14, a malfunction of the external sound source 20, or the like has occurred. In this case, a state in which an external acoustic signal is not applied from the external sound source 20 to the electronic musical instrument 1, a state in which the external acoustic signal applied to the electronic musical instrument 1 from the external sound source 20 is interrupted, or an external acoustic signal applied to the electronic musical instrument 1 from the external sound source 20. The external acoustic signal may be out of order, such as when the sound is unstable. When such an external acoustic signal malfunctions (when the input state of the external acoustic signal is not normal), the desired sound cannot be generated from the sound system 17.

Therefore, the sound source control unit 8 switches the external sound signal to the internal sound signal of the internal sound source 16 when the external sound signal of the channel assigned to the external sound source 20 is out of order. In this case, the sound source control unit 8 changes the tone color of the internal acoustic signal of the internal sound source 16 so as to generate the internal tone signal with the tone color previously associated with the tone color of the external acoustic signal (for example, the tone color having a predetermined similarity). Set. Further, the sound source control unit 8 gives a sounding instruction signal to be given to the external sound source 20, to the internal sound source 16. As a result, the internal sound source 16 generates an internal sound signal of a tone color previously associated with the tone color of the external sound signal. Therefore, the user can continue playing the electronic musical instrument 1 while causing the sound system 17 to generate a musical tone of a desired tone color even when the external acoustic signal is out of order. It should be noted that the tone color previously associated with the tone color of the external acoustic signal includes the tone color that is the same as the tone color of the external acoustic signal.

Hereinafter, the delay time from the generation of the sounding instruction signal to the generation of the musical sound based on the external acoustic signal is called the external delay time, and the delay time from the generation of the sounding instruction signal to the generation of the musical sound based on the internal acoustic signal is called the internal delay time. Call. If the external delay time and the internal delay time are different before and after the external acoustic signal disorder occurs, the user feels uncomfortable. In this embodiment, a case where the external delay time is longer than the internal delay time will be described.

Therefore, the sound source control unit 8 controls the delay device 18 so that the internal delay time becomes equal to the external delay time when a malfunction occurs in the external acoustic signal. Note that the sound source control unit 8 does not always generate the external sound signal by the internal sound source 16 based on the operation of the setting operator 4 by the user, not only when the malfunction of the external sound signal occurs. A process of switching to signal generation may be performed.

(3) Functional Configuration of Sound Source Control Unit FIG. 2 is a block diagram showing the functional configuration of the sound source control unit 8 in FIG. As shown in FIG. 2, the sound source control unit 8 includes an instruction signal generation unit 81, a sound source switching unit 82, an instruction signal output unit 83, a return sound signal input unit 84, a return sound signal detection unit 85, and a switching control unit 86. .. The sound source control unit 8 further includes a tone color setting unit 87, a delay learning unit 88, a delay changing unit 89, and a receiving unit 90. When the CPU 11 of FIG. 1 executes the sound source control program stored in the ROM 10 or the storage device 13, the functions of each unit of the sound source control unit 8 of FIG. 2 are realized.

The instruction signal generator 81 generates various instruction signals such as a sounding instruction signal for each channel based on the operation of the performance operator 2 or the music data. Of the pronunciation instruction signals generated by the instruction signal generator 81, the pronunciation instruction signal to be given to the internal sound source 16 is given to the internal sound source 16. The sounding instruction signal to be given to the external sound source 20 among the sounding instruction signals generated by the instruction signal generating section 81 is given to the sound source switching section 82 and the instruction signal output section 83. In the present embodiment, the sounding instruction signal of channel CH2 is given to internal sound source 16, and the sounding instruction signal of channels CH1 and CH3 is given to external sound source 20. The supply of the sounding instruction signal to the internal sound source 16 or the external sound source 20 is switched by a local-on command and a local-off command of the MIDI standard, for example. The sound source switching unit 82 can switch, for each channel, between a connected state in which the acquired sounding instruction signal is supplied to the internal sound source 16 and a disconnected state in which the acquired sounding instruction signal is not supplied to the internal sound source 16.

The instruction signal output unit 83 is connected to the communication I/F 14 and outputs the sounding instruction signal generated by the instruction signal generation unit 81 to the external sound source 20. The external sound source 20 generates an external acoustic signal in response to the sounding instruction signal, and inputs the generated external acoustic signal to the communication I/F 14. The return sound signal input unit 84 acquires an external sound signal from the communication I/F 14 as a return sound signal (audio return). The return sound signal detection unit 85 detects the state of input of the return sound signal to the return sound signal input unit 84.

When the input state of the return sound signal detected by the return sound signal detection section 85 is normal, the switching control section 86 sets the sound source switching section 82 to the non-connection state. As a result, the sound system 17 generates a musical sound based on the external acoustic signal. On the other hand, the switching control unit 86 switches the sound source switching unit 82 to the connection state when the input state of the return sound signal detected by the return sound signal detection unit 85 is not normal. Thereby, the sound system 17 generates a musical sound based on the internal acoustic signal.

It is also possible to switch the sound source switching unit 82 to the connected state or the disconnected state based on the operation of the setting operator 4 by the user. Therefore, the user can switch the sound source switching unit 82 from the non-connection state to the connection state when the user notices the malfunction of the external acoustic signal. In addition, the user can switch the sound source switching unit 82 from the connected state to the disconnected state when the user notices that the malfunction of the external acoustic signal has been resolved.

The tone color setting unit 87 is provided with the inside of the tone color previously associated with the tone color of the external acoustic signal when the sound source switching unit 82 is in the connected state (when the musical tone based on the external acoustic signal is generated from the sound system 17). The tone color of the internal sound source 16 is set so as to generate an acoustic signal.

The delay learning unit 88 estimates the difference between the external delay time when the sound source switching unit 82 is in the disconnected state and the internal delay time when the sound source switching unit 82 is in the connected state, and the estimated difference is the delay amount. Is stored in the storage device 13. Specifically, the delay learning unit 88 controls the instruction signal generating unit 81 to generate the sounding instruction signal at a predetermined delay learning timing when the sound source switching unit 82 is in the non-connection state. The sounding instruction signal generated by the instruction signal generator 81 is given to the internal sound source 16 and the external sound source 20. As a result, the internal sound source 16 generates an internal acoustic signal, and the external sound source 20 generates an external acoustic signal. The delay learning unit 88 calculates the time difference between the time when the internal sound signal is generated by the internal sound source 16 and the time when the return sound signal is input from the external sound source 20 to the return sound signal input unit 84. In this case, the calculated time difference is estimated to be equal to the difference between the internal delay time and the external delay time. Therefore, the delay learning unit 88 stores the calculated time difference in the storage device 13 as the delay amount to be set in the delay device 18. Therefore, the amount of delay stored in the storage device 13 determines an appropriate internal delay time value to be set when the sound source switching unit 82 is switched from the disconnected state to the connected state.

The delay changing unit 89 acquires the delay amount stored in the storage device 13 in response to the switching of the sound source switching unit 82 from the non-connection state to the connection state, and the delay device is generated so that the acquired delay amount occurs. Control 18

The reception unit 90 receives the input of the delay amount from the setting operator 4. When the input of the delay amount is accepted by the accepting unit 90, the delay changing unit 89 responds to the switching of the sound source switching unit 82 from the disconnected state to the connected state, and the internal delay time of the accepted value occurs. The delay device 18 is controlled as follows.

(4) Sound Source Control Process FIGS. 3 and 4 are flowcharts showing a sound source control process performed by the sound source control unit 8. The sound source control process of FIGS. 3 and 4 is performed by the CPU 11 of FIG. 1 executing the sound source control program stored in the ROM 10 or the storage device 13. The following sound source control processing is performed for each channel assigned to the external sound source 20. In the initial state, the sound source switching unit 82 of FIG. 2 is in the non-connection state.

First, the instruction signal generator 81 determines whether or not the operation of the performance operator 2 has been detected (step S21). When the operation of the performance operator 2 is not detected, the instruction signal generator 81 waits until the operation of the performance operator 2 is detected. When the operation of the performance operator 2 is detected, the instruction signal generation unit 81 generates a sounding instruction signal and supplies the sounding instruction signal to the external sound source 20 via the instruction signal output unit 83 and the communication I/F 14. Yes (step S22). When the sounding instruction signal is supplied, the external sound source 20 generates an external sound signal of the set tone color. The generated external acoustic signal is supplied to the sound system 17 through the communication I/F 14.

Next, the tone color setting section 87 determines whether or not a tone color setting instruction signal is generated based on the operation of the setting operator 4 (step S23). The tone color setting instruction signal includes information indicating a tone color to be set in the external sound source 20. When the tone color setting instruction signal is not generated, the tone color setting unit 87 proceeds to step S25. When the timbre setting instruction signal is generated, the timbre setting unit 87 sets the timbre associated with the timbre to be set in the external sound source 20 in the internal sound source 16 (step S24).

Next, the delay learning unit 88 determines whether or not the current time is the delay learning timing (step S25). If it is the delay learning timing, the delay learning unit 88 calculates the delay amount and stores the calculated value in the storage device 13 together with the tone color and the channel number currently set (step S26). Specifically, the delay learning unit 88 causes the internal sound source 16 to generate an internal acoustic signal based on the sounding instruction signal generated by the instruction signal generating unit 81, and at the same time causes the external sound source 20 to generate an external acoustic signal. The delay learning unit 88 also calculates the difference between the rising time of the waveform represented by the internal acoustic signal and the rising time of the waveform represented by the feedback acoustic signal as the delay amount. In the present embodiment, the delay amount is stored for each channel and each tone color.

Here, the delay learning timing in step S25 is set to a timing suitable for delay learning. For example, the delay learning timing is the timing at which the sound generation instruction signal instructs generation of a single sound instead of a plurality of sounds, or when the processing loop of steps S21 to S28 is repeatedly executed, the processing of step S26 in the previous processing loop is completed. Is set to the timing.

In the process of step S26 described above, when the sounding instruction signal indicates the simultaneous generation of a plurality of sounds, the delay learning unit 88 determines one predetermined return sound of the plurality of return sound signals corresponding to the plurality of sounds. The delay amount may be calculated based on the signal. For example, when simultaneous generation of a plurality of sounds is instructed, a single-tone return sound signal corresponding to one sound (minimum pitch, maximum pitch, etc.) according to a predetermined condition among the plurality of sounds to be generated simultaneously is returned as a feedback sound. The process of outputting to the signal input unit 84 is set in the external sound source 20. Thereby, when the simultaneous generation of a plurality of sounds is instructed, the feedback sound signal of one of the plurality of sounds is input from the external sound source 20 to the return sound signal input unit 84. Therefore, even when the sound generation instruction signal indicates the simultaneous generation of a plurality of sounds, the delay amount is calculated based on one feedback acoustic signal, so that the delay amount calculation process is simplified.

Next, the return sound signal detection unit 85 detects the input state of the return sound signal to the return sound signal input unit 84 (step S27), and determines whether the input state of the return sound signal is normal or not. Yes (step S28). When the input state of the return sound signal is normal, the return sound signal detecting unit 85 returns to step S21. In this case, the generation of the musical sound based on the external acoustic signal from the external sound source 20 is continued.

On the other hand, when the input state of the return sound signal is not normal, the switching control unit 86 switches the sound source switching unit 82 to the connected state (step S29), and proceeds to step S31. As a result, the generation of musical tones based on the internal acoustic signal from the internal sound source 16 instead of the external sound source 20 is continued. Subsequently, the delay changing unit 89 sets the delay amount stored in the storage device 13 in the processing of step S26 in the delay device 18 (step S30).

Next, the instruction signal generator 81 determines whether or not the operation of the performance operator 2 has been detected (step S31). When the operation of the performance operator 2 is not detected, the instruction signal generator 81 waits until the operation of the performance operator 2 is detected. When the operation of the performance operator 2 is detected, the instruction signal generation unit 81 generates a sounding instruction signal and supplies the sounding instruction signal to the internal sound source 16 via the sound source switching unit 82 (step S32). When the tone generation instruction signal is supplied, the internal sound source 16 generates an internal acoustic signal of the set tone color. The generated internal acoustic signal is supplied to the sound system 17 through the delay device 18. At this time, the internal delay time from the generation of the sounding instruction signal to the generation of the musical sound based on the internal acoustic signal is equal to the external delay time from the generation of the sounding instruction signal to the generation of the musical sound based on the external acoustic signal.

Next, the return sound signal detection unit 85 detects the input state of the return sound signal to the return sound signal input unit 84 (step S33), and determines whether the input state of the return sound signal is normal. Yes (step S34). When the input state of the return sound signal is not normal, the return sound signal detection unit 85 returns to step S31. In this case, the generation of the musical sound based on the internal acoustic signal from the internal sound source 16 is continued.

On the other hand, when the input state of the return sound signal is normal, the switching control unit 86 switches the sound source switching unit 82 to the non-connection state (step S35), and proceeds to step S21. Thereby, the generation of the musical sound based on the external acoustic signal from the external sound source 20 is continued again.

In the above sound source control process, the process of step S30 may be executed after the process of step S26 and before the process of step S29. For example, the process of step S30 may be executed after the process of step S26 and before the process of step S27.

In the present embodiment, the delay amount is stored for each channel and each tone color. Therefore, even when the delay amount calculated depending on the channel and the tone color varies, for example, when a plurality of external sound sources are used, an appropriate delay amount can be set in the delay device 18 for each channel and each tone color.

(5) Parameter area (zone) setting The user can cause the sound source control unit 8 to generate a sounding instruction signal by operating the performance operator 2. The pronunciation instruction signal includes parameters such as pitch and velocity. Further, the user can set a plurality of areas for the range of the value of the parameter included in the sounding instruction signal. Here, the plurality of regions to be set may overlap each other. A channel can be assigned to each of the plurality of set areas. As a result, it is possible to individually give a sounding instruction signal to the internal sound source 16 and each external sound source 20. The area setting is used, for example, in a local on state by a local on command of the MIDI standard.

FIG. 5 is a diagram for explaining an example of parameter region setting. As shown in FIG. 5, the performance operator 2 includes a keyboard 200. The keyboard 200 includes a plurality of keys 2a arranged side by side in the left-right direction. The plurality of keys 2a respectively correspond to a plurality of pitches. The user can generate a sounding instruction signal including the corresponding pitch by pressing the desired key 2a.

In the example of FIG. 5, three areas Z1, Z2, Z3 are set for the pitch of the sounding instruction signal. Specifically, four positions P1, P2, P3 and P4 are set on the keyboard 200 so as to be arranged in this order from left to right. The area Z1 is a pitch area corresponding to the key 2a arranged between the positions P1 and P3. The area Z2 is a pitch area corresponding to the key 2a arranged between the positions P2 and P3. The area Z3 is a pitch area corresponding to the key 2a arranged between the positions P3 and P4.

For example, regions Z1, Z2, Z3 are assigned to channels CH1, CH2, CH3, respectively. In this case, when one of the keys 2a between the positions P1 and P2 is pressed, a sounding instruction signal of the corresponding pitch is given to the external sound source 20a of the channel CH1. When any key 2a between the positions P2 and P3 is pressed, a sounding instruction signal of the corresponding pitch is given to the internal sound source 16 of the channel CH2 and the external sound source 20a of the channel CH1. When any key 2a between the positions P3 and P4 is pressed, a sounding instruction signal of the corresponding pitch is given to the external sound source 20b of the channel CH3.

In this example, the sound source control processing of FIG. 3 and FIG. 4 is performed by the sound source control unit 8 of FIG. 2 for each of the channels CH1 and CH3 assigned to the areas Z1 and Z3.

FIG. 6 is a diagram for explaining another example of parameter region setting. In the example of FIG. 6, three regions Z1, Z2, Z3 are set for the combination of the pitch and velocity of the sounding instruction signal. Specifically, in addition to the four positions P1, P2, P3, P4 in FIG. 5, three velocity values V1, V2, V3 are further set. The value V2 is larger than the value V1 and the value V3 is larger than the value V2.

The area Z1 is the pitch corresponding to the key 2a arranged between the positions P1 and P2, and the velocity area between the values V1 and V3, and the pitch corresponding to the key 2a arranged between the positions P2 and P3. And a region of velocity between the values V2 and V3. The area Z2 is a pitch area corresponding to the key 2a arranged between the positions P2 and P3 and a velocity area between the values V2 and V3. The area Z3 is an area of the pitch corresponding to the key 2a arranged between the positions P3 and P4 and the velocity between the values V1 and V3.

As in the example of FIG. 5, areas Z1, Z2 and Z3 are assigned to channels CH1 to CH3, respectively. In this case, when one of the keys 2a between the positions P1 and P2 is pressed with the velocity between the values V1 and V3, the tone generation instruction signal having the corresponding pitch and the velocity value corresponds to the external sound source 20a of the channel CH1. Given to. When any key 2a between the positions P2 and P3 is pressed with a velocity between the values V1 and V2, a tone generation instruction signal having a corresponding pitch and having the velocity value is given to the external sound source 20a of the channel CH1. .. When any key 2a between the positions P2 and P3 is pressed with a velocity between the values V2 and V3, a tone generation instruction signal having a corresponding pitch and having the velocity value is given to the internal sound source 16 of the channel CH2. .. When any key 2a between the positions P3 and P4 is pressed with a velocity between the values V1 and V3, a tone generation instruction signal having a corresponding pitch and a velocity value is given to the external sound source 20b of the channel CH3. ..

Also in this example, the sound source control process of FIGS. 3 and 4 is performed by the sound source control unit 8 of FIG. 2 for each of the channels CH1 and CH3 assigned to the regions Z1 and Z3.

(6) Effects In the electronic musical instrument 1 according to the present embodiment, the external sound source 20 generates an external acoustic signal in response to the sounding instruction signal when the sound source switching unit 82 is not connected. In this state, if a malfunction occurs in the external sound signal supplied from the external sound source 20, the sound source switching unit 82 is switched from the non-connection state to the connection state. Thereby, the internal sound source 16 generates an internal acoustic signal in response to the sounding instruction signal. At this time, the delay amount in the delay device 18 is set so that the external delay time when the sound source switching unit 82 is not connected and the internal delay time when the sound source switching unit 82 is connected are equal. Therefore, even if the external acoustic signal is out of order, it is possible to continue sounding while suppressing the user's discomfort.

Further, the user can change the delay amount in the delay device 18 by operating the setting operator 4. As a result, the user can arbitrarily adjust the sounding timing of the internal sound source 16 based on the sounding instruction signal according to his or her preference.

(7) Other Embodiments (a) In the above embodiment, the delay device 18 configured by hardware is used as the changing means, but the present invention is not limited to this. A changing means for changing the timing at which the tone generation instruction signal generated by the instruction signal generation unit 81 is given to the internal sound source 16 may be used in software.

(B) When an external speaker is connected to the external sound source 20 and a musical tone based on the external sound signal generated by the external sound source 20 is generated by the external speaker, the external sound signal is transmitted during the external delay time. The time supplied from the electronic musical instrument 1 to the electronic musical instrument 1 is not included. In this case, the delay learning unit 88 in FIG. 2 cannot estimate the difference between the external delay time and the internal delay time. Therefore, the time from the generation of the sounding instruction signal to the generation of the external acoustic signal by the external sound source 20 and the time from the generation of the sounding instruction signal to the generation of the internal acoustic signal by the internal sound source 16 and the difference are measured in advance, and the delay device 18 is measured. As the delay amount to be set, the measured difference may be stored in the storage device 13 in advance.

(C) When it is difficult to calculate the delay amount depending on the timbre, the delay amount may be calculated by statistical processing using the delay amounts calculated for other timbres. Further, when a plurality of delay amounts are stored for each tone color by calculating and storing the delay amount each time each tone color is set in the external sound source 20, the latest delay amount is set in the delay device 18. Alternatively, an average value of a plurality of delay amounts may be set. For example, when a plurality of channels of the electronic musical instrument 1 are associated with the same external sound source, an average value of a plurality of delay amounts calculated for a plurality of channels corresponding to the external sound source is stored in the delay device 18. It may be set. Furthermore, it is not necessary to calculate and store the delay amount for each timbre after the delay amount is once calculated and stored for the same timbre. In addition, when there is no or small variation in the appropriate delay amount for each timbre, the delay amount may be calculated independently of the timbre.

(D) The electronic musical instrument 1 and the internal sound source 16 may be connected by a USB (Universal Serial Bus) or Bluetooth (registered trademark), and communication based on another standard such as OSC (OpenSound Control) may be performed.

(E) Switching of the supply of the tone generation instruction signal to the internal sound source 16 or the external sound source 20 and switching of the sound source switching unit 82 between the non-connection state and the connection state are performed by the MIDI standard local on command and local off command. Alternatively, the mode may be switched independently of the local on command and the local off command.

(F) In the above embodiment, the sound source control unit 8 of FIG. 2 is realized by hardware such as the CPU 11 and software such as a sound source control program. However, each component of the sound source control unit 8 is a hardware such as an electronic circuit. It may be realized by wear.

(G) In the above embodiment, the case where the external delay time is longer than the internal delay time has been described, but the present invention is not limited to this. For example, when the internal delay time is larger than the external delay time, more specifically, the internal delay time when the sound source switching unit 82 is in the connected state is more than the external delay time when the sound source switching unit 82 is in the disconnected state. If the difference is larger, the value “0” may be set in the delay device 18 as the delay amount instead of the above difference.

(8) Correspondence between each constituent element of the claims and each part of the embodiment Hereinafter, an example of correspondence between each constituent element of the claims and each part of the embodiment will be described, but the present invention is limited to the following examples. Not done. As each of the constituent elements in the claims, various other elements having the configurations or functions described in the claims can be used.

In the above embodiment, the instruction signal generating unit 81 is an example of the signal generating means, the delay device 18 and the delay changing unit 89 are an example of the changing means, and the instruction signal output unit 83 is an example of the outputting means. The switching unit 82 is an example of a switching unit, the return sound signal input unit 84 is an example of an input unit, the sound system 17 is an example of a sound generating unit, and the delay learning unit 88 is an example of an estimating unit and a learning unit. Yes, the return sound signal detection unit 85 is an example of the detection means. As each of the constituent elements in the claims, various other elements having the configurations or functions described in the claims can be used.

DESCRIPTION OF SYMBOLS 1... Electronic musical instrument, 2... Performance operator, 2a... Key, 3, 5... Detection circuit, 4... Setting operator, 6... Display, 7... Display circuit, 8... Sound source control part, 9... RAM, 10... ROM , 11... CPU, 12... Timer, 13... Storage device, 14... Communication I/F, 15... External storage device, 16... Internal sound source, 17... Sound system, 18... Delay device, 19... Bus, 20, 20a, 20b... External sound source, 81... Instruction signal generating section, 82... Sound source switching section, 83... Instruction signal output section, 84... Return sound signal input section, 85... Return sound signal detecting section, 86... Switching control section, 87... Tone Setting unit, 88... Delay learning unit, 89... Delay changing unit, 90... Reception unit, 100... Electronic musical instrument system, 200... Keyboard, CH1, CH2, CH3... Channel

Claims (8)

Signal generating means for generating a sounding instruction signal,
An internal sound source that generates an internal acoustic signal in response to a sounding instruction signal generated by the signal generating means,
Changing means for changing the value of the internal delay time from the generation of the sounding instruction signal by the signal generating means to the generation of the sound based on the internal acoustic signal ;
An output unit that is connected to an external sound source that generates an external acoustic signal and that outputs the pronunciation instruction signal to the external sound source,
Switching to switch from a first state in which an external acoustic signal is generated by the external sound source in response to the sounding instruction signal to a second state in which an internal acoustic signal is generated by the internal sound source in response to the sounding instruction signal And means
The changing means, when the first state is switched to the second state, the time from the generation of the sounding instruction signal to the generation of a sound based on the external acoustic signal in the first state, and An electronic musical instrument that changes the value of the internal delay time so that the time from the generation of the sounding instruction signal to the generation of a sound based on the internal acoustic signal in the second state becomes equal . Signal generating means for generating a sounding instruction signal,
An internal sound source that generates an internal acoustic signal in response to a sounding instruction signal generated by the signal generating means,
Changing means for changing the value of the internal delay time from the generation of the sounding instruction signal by the signal generating means to the generation of the sound based on the internal acoustic signal;
An output unit that is connected to an external sound source that generates an external acoustic signal and that outputs the pronunciation instruction signal to the external sound source,
Switching to switch from a first state in which an external acoustic signal is generated by the external sound source in response to the sounding instruction signal to a second state in which an internal acoustic signal is generated by the internal sound source in response to the sounding instruction signal Means and
Input means for receiving an external acoustic signal generated by the external sound source as a return acoustic signal,
From the generation of the sounding instruction signal in the first state to the generation of a sound based on the external acoustic signal, and from the generation of the sounding instruction signal in the second state to the generation of a sound based on the internal acoustic signal. Bei example and estimation means for estimating based on difference time and the feedback acoustic signal,
It said changing means, when said first state is switched to the second state, to change based on the estimated difference by the estimating means the value of the internal delay time, electronic musical instruments. The estimating means, when the sounding instruction signal instructs the simultaneous occurrence of multiple sounds using one feedback acoustic signal predetermined among the plurality of feedback sound signals corresponding to plural tones on the estimated claim 2 Electronic musical instrument described. The estimation means is
Learning for generating an internal acoustic signal by the internal sound source at a predetermined timing in the first state and learning the value of the internal delay time based on the time difference between the generated internal acoustic signal and the feedback acoustic signal. An electronic musical instrument according to claim 2 or 3 , including means. Further comprising detection means for detecting a state of input of the return sound signal to the input means,
The switching means sets the first state to the first state in response to a transition from a state where the input of the return sound signal to the input means is normal to a state where the input of the return sound signal to the input means is not normal. The electronic musical instrument according to any one of claims 2 to 4 , which is switched to the state of 2. The switching means sets the second state to the second state in response to a transition from a state where the input of the return sound signal to the input means is not normal to a state where the input of the return sound signal to the input means is normal. The electronic musical instrument according to claim 5 , wherein the electronic musical instrument is switched to the 1 state. The electronic musical instrument has a plurality of channels,
The electronic musical instrument according to any one of claims 1 to 7 , wherein the changing unit changes the value of the internal delay time for each of the plurality of channels. An electronic musical instrument according to any one of claim 1 to 7
One or more external sound sources connected to the electronic musical instrument;
An electronic musical instrument system comprising: a sound generating unit that generates a sound based on an internal acoustic signal generated by the internal sound source of the electronic musical instrument and an external acoustic signal generated by the one or more external sound sources.

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