JP2830709B2 - Electronic musical instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument, and more particularly to an electronic musical instrument having a self-diagnosis function for performing a self-diagnosis when a normal operation is not performed.

[0002]

2. Description of the Related Art An electronic musical instrument operates based on various parameters, and normally generates musical tones by setting parameters to normal values.

In the case where the electronic musical instrument does not operate normally, for example, when a musical tone is not generated even when playing (key-on), the performer conventionally estimates abnormal parameters from the symptom, and switches the electronic musical instrument from the play mode. The mode was shifted to the edit mode for setting, the parameters were examined, and when a parameter with an abnormal value was found, the abnormality was corrected by correcting it.

[0004]

However, electronic musical instruments generate musical tones using an extremely large number of parameters, and it has been extremely difficult to find abnormal parameters from the musical tones. Furthermore, when the electronic musical instrument does not operate normally, there are various cases, such as when the value of the parameter is not normal, and when there is equipment failure or poor connection. In many cases, such anomalies could not be found.

[0005] For this reason, a user who is not familiar with the electronic musical instrument may take a long time to recover the electronic musical instrument when the electronic musical instrument does not operate normally, or may not be able to recover the function.

An object of the present invention is to provide an electronic musical instrument capable of diagnosing the cause of malfunctioning by itself.

[0007]

SUMMARY OF THE INVENTION According to the present invention, the user
And check means for settling possible multiple parameters to check whether the normal value, the plurality of parameters
If any of the parameters are not normal, report the parameter.
And alarm means for knowledge, the parameters by the operation of the user
Reset procedure to reset the data to a predetermined set value.
And a step .

[0008]

The checking means checks whether the parameters related to the specific function of the electronic musical instrument are normal values. If abnormal parameters are found by this check, the alarm means outputs an alarm. This alarm is performed by a method of displaying an abnormal parameter name on a display, for example. When such an alarm is issued, the function of the electronic musical instrument can be restored by correcting the parameter. Also, the parameter
If you can not correct the value to a normal value, reset
Parameter can be returned to a predetermined set value.
it can. If the alarm is not performed, the electronic musical instrument is malfunctioning due to an abnormality other than the parameter, and other parts, for example, the device main body and the connection may be checked.

[0009]

FIG. 1 is a block diagram of an electronic musical instrument having a self-diagnosis function according to an embodiment of the present invention. The overall operation of this electronic musical instrument is controlled by the CPU 10. CPU1
A ROM 12, a RAM 13, a keyboard 14, an interface 15, a panel operator 17, a display 18, a tone generator 19, an effect applying unit 20, and an amplifier 21 are connected to the unit 0 via a bus 11. The ROM 12 stores waveform data for forming a musical tone waveform, an operation control program for controlling the operation of the CPU 10, and the like. RA
In M13, a register for storing various data generated during the performance and a register for storing parameters to be given to the tone generator 19 and the effect applying unit 20 are set. The keyboard 14 is a keyboard having a range of about 5 octaves, and has a function of outputting velocity data indicating on / off of each key and pressing strength of each key. Various controls 16 are connected to the interface 15. Examples of the controls include a modulation wheel and a foot pedal. The CPU 10 includes an interface 15
The parameter controlled by the operation amount data is increased / decreased based on the operation amount data input from the operation element 16 via the controller 16, and the value is transmitted to the musical tone generating section 19 and the effect applying section 20. The panel operator 17 includes various switches provided on the operation panel (see FIG. 3). The display 18 is an LCD display 47 (FIG. 3) provided on the operation panel.
) To control the display operation of the LCD display 47. The tone generator 19 is a circuit that generates digital tone waveform data WAVE based on various parameters input from the CPU 10. In addition, the effect imparting unit 2
0 is based on a parameter input from the CPU 10,
A predetermined process is performed on the musical sound waveform data generated by the musical sound generator 19. The predetermined processing is to provide an effect such as equalizing or reverb. The tone waveform data processed by the effect imparting section 20 is converted into an analog tone signal TO.
The signal is input to the amplifier 21 as NE. The amplifier 21 is C
This tone signal is amplified with a gain based on the VOLUME parameter input from the PU 10 and output to the speaker 22. The speaker 22 emits this tone signal.

FIG. 2 is a detailed block diagram of the tone generator 19 and the effect generator 20.

FIG. 1A is a block diagram of the tone generator 19. The tone generator 19 generates basic waveform data based on a parameter (WAVE_PAR) like a sound source of the FM system, for example, and adds an envelope or the like to the basic waveform data to generate musical sound waveform data. WAVE_PAR is input to the musical tone waveform generator 32. The tone waveform generator generates basic waveform data based on these parameters. The generated basic waveform data is input to the tone color filter 31. The timbre filter is, for example, a low-pass filter capable of changing a cutoff frequency. The cutoff frequency is a parameter (FOOT) generated by a foot controller that is one of the operators 16.
Is controlled by FOOT is a variable gain amplifier 32
Is input to the timbre filter 31 via the. To the variable gain amplifier 32, (FOOT_Controller_Sense) which is a parameter for setting the sensitivity of the foot controller (gain of the variable gain amplifier 32) is input. The waveform data filtered by the timbre filter 32 based on the FOOT is input to the envelope assigning unit 33. A parameter (EG_PAR) for determining the shape of the envelope is input to the envelope assigning unit 33, and the envelope is added to the waveform data based on the parameter. The waveform data to which the envelope is added is input to the variable gain amplifier 34. The variable gain amplifier 34 has a parameter (WAVE_LEV).
EL) to set the gain and amplify the waveform data. The amplified waveform data is musical tone waveform data WAVE
Is input to the effect imparting unit 20.

FIG. 1B is a block diagram of the effect applying section 20. The effect imparting unit 20 includes the graphic equalizer 3
5 and a reverb circuit 36. The musical sound waveform data WAVE is input to the graphic equalizer 35 and processed into waveform data having a predetermined frequency spectrum distribution. A characteristic setting parameter (GEQ_PAR) is input to the graphic equalizer 35. This parameter gives the equalizing characteristics of the graphic equalizer. A reverb parameter (REV_PAR) is input to the reverb circuit. This parameter is a parameter for setting the reverberation characteristic given by the reverb circuit 36. Graphic equalizer 35
And the signal passed through the reverb circuit 36 is a tone signal TO.
The signal is output to the amplifier 21 as NE.

FIG. 3 is a configuration diagram near the operation panel. An LCD display 47 is provided on the operation panel, and a plus / minus switch 46 for scrolling the screen and setting parameters is provided on the right side of the LCD display 47. Further, function switches 41 to 45 (F1 to F5) for setting various functions are provided below the LCD display 47.
When the function switches F1 to F5 are turned on, what kind of function is performed differs depending on the mode at that time. Therefore, the function is displayed on the LCD display 47 according to the mode. In the state shown in the figure, the menu screen in the TOOLS mode (additional function mode) is displayed, and the function switch F1 is set to the self-diagnosis function (DIAGN).
The switch for executing the OSIS function) and the function switch F2 are switches for initializing the entire apparatus. In addition, TOOLS is displayed on the operation panel.
A mode setting switch 40 is provided. This TOO
The LS mode setting switch switches from the normal performance mode to TOO.
This switch is turned on when shifting to the LS mode.

4 to 6 and FIGS.
The operation of the electronic musical instrument will be described with reference to the display example of FIG.

FIG. 4 is a flowchart showing the main program. First, the initial setting operation (n
Execute 1). The initial setting operation is, for example, a reset operation of a register, an operation of transmitting preset data to the tone generation unit 19, the effect imparting unit 20, and the like. Thereafter, the panel operator is scanned (n2), and the tone color selection setting process (n3) and the effect selection setting process (n3) are performed according to the operation of the panel operator.
4) and a volume setting process (n5) is executed. These selection setting processes are processes in which corresponding parameters are read from the ROM 12 or the RAM 13 and transmitted to predetermined registers of the musical tone generating unit 19 and the effect applying unit 20 according to the operation of the panel operator. As a result, a predetermined tone, effect, or volume is set. Next, TOOLS
A function (additional function) setting process is executed (n6). Further, the keyboard 14 is scanned to detect a key depression (n7), and a tone generation process is executed in response to the key depression (n8). Thereafter, other processes such as a display process and a volume parameter transmission process are executed (n9). N2 to n9 until the power is turned off
Is repeatedly executed.

FIG. 5 is a flowchart showing the TOOLS function setting processing operation. First, it is checked whether or not the current mode is the TOOLS mode (n11). If the mode is not the TOOLS mode, the process directly returns (n12). TOOL
If the mode is the S mode, the currently specified function mode is checked (n13). The function mode is the function switch F1,
It is designated by turning on F2. If nothing is specified as a result of the check, a menu screen is displayed and the routine returns (n14, n15). The menu screen is a screen displayed on the LCD display 47 of FIG. When the function switch F1 is turned on, the DIAG
When NOSIS_MODE (self-diagnosis function) is designated, the self-diagnosis processing is executed (n16). At this time, the displays of FIGS. 7A to 7C and FIGS. 8A to 8C are displayed on the LCD display 47 according to the result of the self-diagnosis processing. Also, the function switch F2 is turned on and the INI
When TIALISE_MODE (initialization mode) is specified, the system performs initialization processing (n17),
The entire system is initialized to a predetermined setting state. After these operations, the program returns to the main program.

FIG. 6 is a flowchart showing the operation of the DIAGNOSIS function processing. In this operation, first, selection of the content of diagnosis is accepted (n20). In this case, a plurality of diagnosis contents are assigned to the function switches F1 to F5. N2 is what the selected diagnostic content is
Judge with 1. No Sound Check (No_Sound
If it is d_Check, the operation proceeds to the operation of n22 or less, and the controller check (Controller_Check) is performed.
If k), the operation proceeds to n30 or less.

In the case of no sound check, first, FIG.
The basic screen shown in (A) is displayed (n22). Thereafter, it is determined whether or not the function switch F1 or F5 is turned on (n23, n25). Since the function switch F1 is a switch for instructing to interrupt this processing and return to the menu screen, when this switch is turned on, the display shifts to the menu screen (see FIG. 3) and returns (n24). Further, since the function switch F5 is a switch for executing the self-diagnosis function, when this switch is turned on, all parameters related to the tone generation of musical tones are checked (n26).

The parameter is checked, for example, for each parameter to determine whether its value is within a predetermined range. If there is any abnormality as a result of the check, the parameter is set to L
It is displayed on the CD display 47 (n28). The display mode in this case is as shown in FIG. The figure shows that the volume parameter VOLUME is 0. Therefore, in this example, the user only has to reset the volume parameter VOLUME. On the other hand, if there is no abnormality as a result of the parameter check, the absence of a musical tone is caused by another cause, so there is no abnormality in this parameter, and it is displayed that another part such as an audio line should be checked (n27: FIG. )), Return.

In the case of a controller check, first, FIG.
The basic screen shown in (A) is displayed (n30). Thereafter, it is determined whether or not the function switch F1 or F5 is turned on (n31, n33). Since the function switch F1 is a switch for instructing to interrupt this processing and return to the menu screen, when this switch is turned on, the screen shifts to the menu screen (see FIG. 3) and returns (n32). Since the function switch F5 is a switch for executing this self-diagnosis function, when this switch is turned on, all parameters related to the controller are checked (n34). If there is any abnormality as a result of the check, the parameter is displayed on the LCD display 47 (n3
6). The display mode in this case is as shown in FIG. In the figure, FOOT_Controller_S which is a sensitivity parameter of the foot controller
ence is 0, urging the user to change / review the set value. On the other hand, if there is no abnormality as a result of the parameter check, there is no abnormality in the parameter because no musical tone is produced due to other causes, and it is displayed that other parts such as connection of the controller should be checked (n3
5: FIG. 8C), and returns.

In the self-diagnosis processing, the following abnormalities can be diagnosed. In this case, the parameters to be checked are as follows. No sound (no sound check)-Volume parameters, local switch, sound key detection settings (velocity sensitivity, etc.), mode settings, etc. Low volume-Volume parameters, graphic equalizer settings, etc. When controls do not work (Controller check)-When MIDI data cannot be output, such as the sensitivity setting of the operator-MIDI setting, key press detection setting, etc. When MIDI data cannot be input-MIDI setting, setting of tone generator parameters, etc.

The normal range of the parameter may be determined in advance for each parameter. However, when a plurality of parameters are correlated and the normal range changes depending on the set value of each parameter, the normal range is determined according to the parameter set value. May be changed.

When a parameter that is not in the normal range is found, the self-diagnosis function may be stopped and the parameter may be displayed. After checking all parameters, abnormal parameters are collected. It may be displayed.

At this time, not only the display but also the editing and changing of the parameters may be made simultaneously.

Further, in the above embodiment, the self-diagnosis function
It is executed based on the user's switch operation, but the basic functions such as sound output are automatically executed according to the timing such as when the power is turned on or the specific performance operation You may make it.

[0026]

As described above, according to the present invention, whether or not a parameter is a normal value is checked, and if the parameter is not normal, the parameter is notified , so that the electronic musical instrument functions normally. If not, the user does not need to search for abnormal parts based on his own experience,
The notified parameters can be adjusted again to quickly return the function to normal. On the other hand, set the parameters to normal values
If it is not possible to reset to
Parameter can be returned to a preset value.
The function of the electronic musical instrument does not return to normal.

[Brief description of the drawings]

FIG. 1 is a block diagram of an electronic musical instrument according to an embodiment of the present invention.

FIG. 2 is a block diagram of a musical sound generator and an effect applying unit of the electronic musical instrument.

FIG. 3 is a diagram showing a part of an operation panel of the electronic musical instrument.

FIG. 4 is a flowchart showing the operation of the electronic musical instrument.

FIG. 5 is a flowchart showing the operation of the electronic musical instrument.

FIG. 6 is a flowchart showing the operation of the electronic musical instrument.

FIG. 7 is a view showing a display mode of an LCD display of the electronic musical instrument.

FIG. 8 is a view showing a display mode of an LCD display of the electronic musical instrument.

[Explanation of symbols]

 40-TOOLS mode setting switch 41,42,43,44,45-Function switch 47-LCD display

Claims (1)

(57) [Claims] 1. Check means for checking whether a plurality of parameters adjustable by a user are normal values,
And alarm means for notifying the parameter if any is not a normal value of the plurality of parameters, use
The parameter is set to a predetermined value by a user
An electronic musical instrument comprising: reset means for resetting the electronic musical instrument.