JP3320169B2 - Parameter editing device for electronic musical instruments - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parameter editing device for setting the tone of an electronic musical instrument while listening to generated musical tones.

[0002]

2. Description of the Related Art Generally, an electronic musical instrument is designed so that a plurality of musical tones can be selected and generated, and an electronic musical instrument capable of further changing those tones has been known. FIG. 10 shows an example of a block diagram of such an electronic musical instrument. In this figure, when a key press on the keyboard 105 is detected by the detection circuit 106, a key-on signal and a key code signal are transmitted from the detection circuit 106 to the processing device (CPU) 101 via a bus, and the CPU 101 Perform pronunciation processing. That is, the CPU 101 transmits to the tone generator circuit 112 the data set on the panel switch 107 and the timbre information corresponding to the parameters set by the slider 109 together with the key code signal and the like. The tone generator 112 generates a tone having a pitch and tone according to the transmitted data and parameters. The generated musical sound is converted into an analog signal by a digital / analog converter (D / A), and the musical sound is generated by the sound generating means 114.

The setting data of the panel switch 107 is detected by a detection circuit 108, and the parameter set by the slider 109 is detected by a detection circuit 110 and sent to the bus 104. Further, various information is displayed on the display circuit 111.
The read-only memory (ROM) 102 has a CP
U101 programs and timbre data are stored,
The random access memory (RAM) stores tone color data set by the user and parameters set by the user with a slider or the like.

In the electronic musical instrument configured as described above, the slider 109 is composed of a plurality of sliders. By operating each of the sliders 109, the tone parameter value can be changed and edited. . As a result, the timbre can be controlled so as to have a desired timbre. Normally, the maximum operation position of the slider 109 becomes the maximum value of the parameter,
The minimum operation position of the slider 109 corresponds to the minimum value of the parameter, and the value of the parameter can be freely changed from the maximum to the minimum. The number of parameters that can be changed by each slider 109 is one.

[0005]

In an electronic musical instrument, when a parameter value is being edited by an operator such as a slider, sometimes it is desired to compare the musical tone with the parameter value before the change. In such a case, in a conventional electronic musical instrument as shown in FIG. 10, comparison was made using a compare function. This compare function is as follows. The parameters being edited are stored in the edit buffer, and the original parameters are not changed during editing. Then, when the editing is completed, the contents of the editing buffer and the original parameters are exchanged. During editing, if you want to compare, call the original parameter to compare.

However, at the time of comparison, since all parameters including the parameter being edited return to the original parameters, there is a problem that comparison cannot be performed only for a specific parameter. Further, an electronic musical instrument that does not have such a compare function has a disadvantage in that it is not possible to compare a parameter before change with a parameter after change. Furthermore, since one parameter is assigned to each of the parameter change operators, there is a problem that the editing work becomes very troublesome when the number of parameters is large. Therefore, an object of the present invention is to provide an electronic musical instrument that can easily return to a parameter before change without having a compare function. Another object of the present invention is to provide an electronic musical instrument that can easily perform an editing operation even when the number of parameters is large.

[0007]

In order to achieve the above object, the present invention is to return a parameter to a preset value when a parameter change operator is set at a specific position. Further, the present invention is a constant selectively assign to table a plurality of parameters in the parameter change operator
In other words, it generates the parameter values of a plurality of parameters assigned according to the position of the parameter value change operator.

[0008]

According to the present invention, the parameters can be easily returned to the preset values before the change without the compare function. Also, only specific parameters can be returned to preset parameters before change. Furthermore, since multiple parameters were assigned to one change operator,
An editing operation suitable for each tone can be easily performed.

[0009]

1 is a block diagram of an electronic musical instrument provided with a parameter editing device according to the present invention. In this figure,
When a key depression of the keyboard 5 is detected by the detection circuit 6, a key-on signal and a key code signal are transmitted from the detection circuit 6 to the processing device (CPU) 1 via a bus, and the CPU 1 performs a tone generation process based on the signal. . That is, the CPU 1 transmits data set to the panel switch 7 and timbre information and the like according to the parameters set by the QED slider 9 to the tone generator circuit 12 together with a key code signal and the like, and the tone generator circuit 12 transmits the data. Generates musical tones of pitch and tone according to data and parameters.

The generated musical tone is converted into an analog signal by a digital / analog converter (D / A) 13, and the musical tone is generated by a sound generating means 14. The setting data of the panel switch 7 is detected by the detection circuit 8, and the QED
The parameters set by the slider 9 are detected by the detection circuit 10 and transmitted to the bus 4. Further, various kinds of information are displayed on the display circuit 11. The read-only memory (ROM) 2 has C
The timbre data including the program of the PU 1 and the preset values of the parameters are stored. The random access memory (RAM) 3 stores the timbre data set by the user and the parameters set by the user with the QED slider 9 and the like. . Note that QED is short for Quick Edit.

In the electronic musical instrument configured as described above, the QED slider 9 is composed of a plurality of QED slider operators, and by operating each of the QED sliders 9, the parameter values can be changed and edited. It has been like that. As a result, the timbre can be controlled so as to have a desired timbre. The maximum operation position of the QED slider 9 corresponds to the maximum value of the parameter, and the minimum operation position of the QED slider 9 corresponds to the minimum value of the parameter. The parameter value can be freely changed from the maximum to the minimum. It has been like that. Further, when the QED slider 9 is set at a specific position, the parameter returns to a preset value. A plurality of parameters can be assigned to each parameter that can be changed by each QED slider 9 for each tone color.

The relationship between the QED slider 9 and the set parameter values will be described with reference to FIG. FIG. 2 (a)
Shows one QED slider 9, and the slider output can be changed from "-1" to "+1" by operating the slider knob 10 up and down. FIG. 4B shows actual parameter values actually set when the QED slider 9 is operated. As shown in this figure, when the QED slider 9 is set at the position of the upper limit “+1”, the actual parameter is a Max parameter, for example, “6”.
When the QED slider 9 is set at the center position “0”, the parameter value is preset, for example, “41”, and the QED slider 9 is set at the lower limit position “−1”. Is set to, for example, Min parameter value “0”. And Q
Move the ED slider between "+1" to "0" and "0" to "-
When set at a position between "1", the actual parameter value is obtained by interpolating the parameter value.

That is, the parameter values for the QED slider output are as shown in the graph of FIG. As shown in this figure, when the QED slider is set to "-1",
The parameter value becomes Min, and the QED slider is set to "0".
Is set to the preset parameter value Po, and when set between "-1" and "0", the parameter value is set to the parameter value Y interpolated between the parameter value Po and the parameter value Min. This parameter value Y can be expressed by the following equation. Y = (− Min + Po) * Q + Po (1)

Next, when the QED slider is set to "+1", the parameter value becomes Max, and "0" to "+1"
When the QED slider is set to "0", the preset parameter value P is set as described above.
o, the parameter value Po and the parameter value Max
The parameter value Y is obtained by interpolating the interval. This parameter value Y can be expressed by the following equation. Y = (Max−Po) * Q + Po (2) In FIG. 3 and the above equations (1) and (2), parameter values are obtained by linear interpolation.
The parameter value may be obtained by performing curve interpolation as shown in FIG. In this case, the parameter value may be obtained by calculation, or the parameter value may be obtained by passing through a non-linear table. Further, as shown in FIG.
The parameter value of Max or the parameter value of Min may be set before the ED slider reaches “+1” or “−1”.

Next, an operation of setting parameters by operating such a QED slider will be described with reference to FIG. In FIG. 1A, reference numeral 20 denotes a tone color parameter memory, which includes a plurality of memories 21 to 25, and each of the memories 21 to 25 stores a different tone color parameter. However, since the memory configurations are all the same, only the configuration of the memory 21 is shown.
Filter parameter and effect parameter areas,
It is composed of a QED slider value, a QED assignment table, and other parameter areas. FIG. 2B shows a schematic configuration of the tone generator circuit. The tone color parameter is a parameter set in the tone generator 27, and the filter parameter is a parameter set in the low-pass filter 28 that changes the tone of the output of the tone generator 27. The effect parameter is a parameter set in the effect 29 for applying an effect to a musical tone. FIG. 7 shows an example of these parameters. However, an example in which an FM sound source is used as the sound source is shown.

Reference numeral 26 shown in FIG. 6A denotes an edit buffer which is used when a tone is selected from a panel switch or the like.
The timbre parameters selected from the timbre parameter memory 20 are transferred and stored. By operating a plurality of QED sliders, the timbre parameters, filter parameters, and effect parameters stored in the edit buffer can be changed, and the changed parameter values can be output to the tone generator circuit. To compare the tone after the parameter value is changed with the tone before the parameter value is changed, the QED slider is set to a predetermined specific position, for example, the position of “0”.
The preset value stored in 0 is read and sent to the tone generator circuit. Thus, the parameter value can be compared with the parameter value before the change. If it is desired to save the parameter changed by operating the QED slider, the QED slider value of the edit buffer 26 may be stored in the QED slider value area of the tone color parameter memory 20.

When a tone of a timbre based on a previously set parameter value is used, the QED slider value stored in the timbre parameter memory 20 is read out and sent to the tone generator circuit. Since the slider value does not match the position of the QED slider,
Until the D slider is operated to the position where the read QED slider value is output, the QED slider is not enabled. Alternatively, when the QED slider value is read from the tone color parameter memory 20, the QED slider may be mechanically operated to automatically operate the corresponding position. A table of a plurality of tone parameters assigned to each QED slider is stored in the QED assignment table of the tone parameter memory 20. The QED assignment table is also transferred to the edit buffer 26 so that the user can arbitrarily change the table. Have been able to.
Then, when it is desired to save the changed QED assignment table, the QED
What is necessary is just to store in the area of the assignment table.

The parameters assigned to the QED slider are assigned such parameters that can be changed smoothly. For example, parameters other than the “algorithm” of the timbre parameter and the “effect type” of the effect parameter shown in FIG. 7 are assigned. Here, as an example of the assignment, if the parameter of the FM modulator and the parameter of the Q of the filter are assigned to one QED slider, it is possible to simultaneously increase / decrease the overtone and change the sound habit. Also, if the output ratio parameter of a plurality of carriers and the parameter of the effect depth are assigned to one QED slider, for example, if one line is a piano sound and two lines are a string sound, one line of sound is generated. When the size is increased, the depth of the chorus can be reduced, and when the output of the two series is increased, the chorus can be increased. Furthermore, Q
The number of parameters that can be assigned to the ED slider can be any number. The type of the parameter to be assigned may be any type, and may be any combination of a plurality of parameters. Furthermore, a plurality of sets of parameters may be given names representing the characteristics of the set. For example, names such as "hardness of sound" and "soundness of sound" may be displayed in association with a slider. You may.

Next, FIG. 8 shows a flowchart of a control portion of the electronic musical instrument shown in FIG. In this figure, when the power of the electronic musical instrument is turned on, an initialization process is performed in step S31, and the QED slider is scanned in step S32. When the change of the QED slider is not detected, the process proceeds from step S33 to step S33.
The flow shifts to 35, where other processing is performed. In this other processing, processing of a keyboard, a tone color selection switch, display, and the like are performed. Then, the process returns to step S32, and the above processing is repeatedly performed. Step S
At 33, when a change in the QED slider is detected,
The process proceeds to the parameter changing process in step S34, and after the parameter changing process is performed, the process proceeds to step S35, and the same process as described above is performed. FIG. 9 shows a flowchart of the parameter changing process.

In this flowchart, slider 1 changes parameter 1 and slider 2 changes parameter 2
And an example in which parameter 3 is changed. In the parameter changing process, first, in step S41, whether the changed slider is the slider 1 or the slider 2 is detected,
When the slider 1 is detected, the process proceeds to step 42, and the parameter 1 is changed based on the output of the slider 1. On the other hand, if it is detected that the slider 2 is present, the process proceeds to step S43.
, The parameters 2 and 3 are changed based on the output of the slider 2. The change of the parameter based on the slider 2 is executed by the method shown in FIGS. Then, the process proceeds to step 44, where the changed parameters are output to the tone generator circuit, and the process is returned. Then, the process proceeds to step S35 shown in FIG. 8, and the same processing as described above is performed.

Although the example of the FM tone generator has been described as the tone generator circuit, the present invention is not limited to this, and any tone generator circuit such as a waveform memory readout scheme or a physical model simulation scheme having a closed loop may be used. Can be applied to the parameters of In the embodiment, the center position of the operation element is set as the specific position, and Q
Although the preset value is set when the ED slider is set, the present invention is not limited to this, and a position other than the center position may be set as the specific position. In such a case, it is preferable to provide a click position on the operator and set the position to be a specific position. Further, the specific position may be displayed on a display. Further, the parameter change operator is not limited to the slider operator, but may be a rotary operator or the like, and the number of parameters that can be assigned to this parameter change operator can be any number.

[0022]

According to the present invention, the parameters can be easily returned to the preset values before the change without the compare function. Also, only specific parameters can be returned to preset parameters before change. Further, since a plurality of parameters are assigned to one change operator, an edit operation suitable for each tone can be easily performed.

[Brief description of the drawings]

FIG. 1 is a block diagram of an electronic musical instrument provided with a parameter editing device of the present invention.

FIG. 2 is a diagram showing a relationship between a QED slider of the present invention and actual parameters.

FIG. 3 is a graph showing a relationship between a QED slider of the present invention and actual parameters.

FIG. 4 is a graph showing another relationship between the QED slider of the present invention and actual parameters.

FIG. 5 is a graph showing another relationship between the QED slider of the present invention and actual parameters.

FIG. 6 is a diagram illustrating a procedure for changing a parameter.

FIG. 7 is a table showing examples of parameters.

FIG. 8 is a diagram showing a flowchart of a control part.

FIG. 9 is a diagram showing a flowchart of a parameter changing process.

FIG. 10 is a block diagram of a conventional electronic musical instrument.

[Explanation of symbols]

 1,101 CPU 2,102 ROM 3,103 RAM 4,104 Bus 5,105 Keyboard 6,8,10,106,108,110 Detection circuit 7,107 Panel switch 9 QED slider 11,111 Display circuit 12,112 Sound source Circuit 13, 113 D / A conversion circuit 14, 114 Sound generation means 20 Tone parameter memory 21 to 25 memory 26 Edit buffer 27 Sound source 28 LPF 29 Effect 109 Slider

Continuation of front page (56) References JP-A-59-40698 (JP, A) JP-A-62-11895 (JP, A) JP-A-3-119390 (JP, A) JP-A-4-324898 (JP) JP-A-5-134666 (JP, A) JP-A-2-296296 (JP, A) JP-B-62-49635 (JP, B2)

Claims (4)

(57) [Claims] 1. A storage means for storing at least a preset value of a parameter for determining a timbre of a tone signal formed by a tone signal forming means, and operating at an arbitrary position from a first position to a second position. By doing so, a parameter change operator for editing the value of the preset value read from the storage means, a detection means for detecting the position of the parameter change operator, and the detection means, When the first position and the second position are detected, a maximum value that the parameter can take is generated, and when the second position is detected, a minimum value that the parameter can take is generated. When a specific position between the first position and the specific position is detected, the preset value read from the storage means is generated. When a position between the first position and the specific position is detected, the preset value is generated. And a value interpolated between the second position and the preset value. When a position between the second position and the specific position is detected, a value interpolated between the minimum value and the preset value is generated. and parameter value generating means for, and a said musical tone signal forming means for forming a musical tone signal based on the value of the parameters generated from the parameter value generating means, parameters generated from the parameter value generating means
A parameter editing device for an electronic musical instrument, wherein a value can be stored in the storage means . 2. The storage means stores a table defining a plurality of parameter types that are simultaneously changed among a plurality of parameters used when forming a musical tone signal, and is defined in the table among the plurality of parameters. Assigning means for selectively assigning the parameter type to the parameter change operator, wherein the parameter value generating means changes simultaneously according to the position of the parameter change operator, and assigns the parameter in the assigned plurality of parameter types. 2. The parameter editing device for an electronic musical instrument according to claim 1, wherein the parameter editing device generates a value. 3. The parameter editing device for an electronic musical instrument according to claim 1, wherein said parameter change operation element has said specific position set as a click position. 4. A preset value storage means for storing a preset value of a parameter, and read from the preset value storage means by operating an arbitrary position from a first position to a second position. A parameter change operator that edits the parameter value of the preset value; a detector that detects the position of the parameter change operator; and the parameter can be taken when the detector detects the first position. When a maximum value is generated and the second position is detected, a minimum value that the parameter can take is generated, and when a specific position between the first position and the second position is detected, Generating the preset value read from the preset value storage means, and when detecting the position between the first position and the specific position, sets the preset value between the maximum value and the preset value. A parameter value generating means for generating an interpolated value and, when detecting between the second position and the specific position, generating a value interpolated between the minimum value and a preset value; Parameter value storage means for storing a parameter value generated by the value generation means, wherein the parameter value generation means, when reading the parameter value from the parameter value storage means, the read parameter value and the parameter Corresponds to the position of the change operator
If parameter values are different, the varying the parameters
Until the position of the switch is returned to the specified position,
The parameter value corresponding to the position of the parameter change
A parameter editing device for an electronic musical instrument, wherein the parameter editing device is not effective .