JP2000293176A - Electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To actualize an electronic musical instrument which can display musical sound parameters on a keyboard and change the displayed musical sound parameters through key operation. SOLUTION: When a parameter selection switch is turned ON, desired parameters are read out of a RAM 7 and converted into key assignment data. According to the key assignment data, a key depression guide part 2 is driven to illuminate, thereby displaying the parameters on a keyboard 1 by indicators. When a key is pressed in the indicator display period, the key-inputted parameters are displayed on the keyboard 1 according to the key assignment data corresponding to the pressed key and the newly inputted parameter is updated and registered in the RAM 7. Consequently, the musical sound parameters can be displayed on the keyboard and the displayed musical sound parameters can be varied through key operation.

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 capable of displaying tone parameters on a keyboard and changing the displayed tone parameters in response to key operations.

[0002]

2. Description of the Related Art Conventionally, a light emitting means is arranged below each key of a keyboard so that a key to be depressed is synchronized with reproduction of performance data indicating a pitch to be sounded and its sounding timing. 2. Description of the Related Art There is known an electronic musical instrument having a so-called navigation function that turns on a correspondingly disposed light emitting unit to guide a user to play a key to be played.

[0003]

In an electronic musical instrument having a navigation function, a light emitting means is provided for each key of the keyboard, so that the keyboard functions as a display means. This display means cannot be used to display tone parameters on the keyboard or change the displayed tone parameters in response to key operations. Therefore, the present invention has been made in view of such circumstances, and provides an electronic musical instrument that can display musical tone parameters on a keyboard and change the displayed musical tone parameters in accordance with key operations. The purpose is.

[0004]

To achieve the above object, according to the first aspect of the present invention, among the light emitting means provided for each key of the keyboard, the light emitting means corresponding to the key to be played is turned on. In the electronic musical instrument having a function of guiding key presses, a parameter selecting means for selecting a tone parameter to be displayed from a plurality of tone parameters stored in advance in the storage means, and a key provided for each key of the keyboard. Conversion means for converting the tone parameter selected by the parameter selection means into key assignment data indicating which key is to be assigned when the light emission means is set as a display range; and key assignment data converted by the conversion means. Display control means for illuminating the light emitting means in accordance with the above and displaying musical tone parameters on the keyboard for a certain period of time; If any key on the keyboard is depressed during the display, the key assignment data corresponding to the depressed key is converted into a tone parameter, and the key assignment data is updated and registered in the storage means as a new input. Key input means.

According to the second aspect of the present invention, the display control means is operable to depress one of the keys on the keyboard while displaying the musical tone parameters for a certain period of time. In this case, key assignment data corresponding to the depressed key is displayed as a newly input tone parameter.

According to the third aspect of the present invention, when a key in a lit state is depressed during the musical tone parameter display period, the key depressing means presses the key. Key assignment data corresponding to the selected key is converted into a tone parameter to be deleted, and the tone parameter is deleted from the storage means.

According to a fourth aspect of the present invention, the converting means variably designates a predetermined key range in the keyboard as a display range.

In the present invention, when a desired tone parameter to be displayed is selected from a plurality of tone parameters stored in the storage means, the selected tone parameter is converted into key assign data, and the light emitting means is turned on in accordance with the key assign data. When the key is lit, a tone parameter is displayed on the keyboard for a certain period of time.If any key is pressed during this display period, the key assignment data corresponding to the depressed key is converted into a tone parameter, and a new input is performed. It is possible to display the tone parameters on the keyboard and change the displayed tone parameters according to the key operation.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electronic musical instrument according to an embodiment of the present invention will be described with reference to the accompanying drawings. A. FIG. 1 is a block diagram showing the overall configuration of an electronic musical instrument according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a keyboard for generating performance information such as a key-on / key-off signal and a key code corresponding to a key press / release operation (performance operation). 2 is CPU5
A key-pressing guide unit that displays a key of a key to be depressed under control of the key, and also displays a tone parameter value designated according to a switch operation as an indicator.

[0010] The key press guide section 2 illuminates a light emitting means 2a (not shown), which is formed of a translucent resin material or the like and is arranged below each key, and which is provided for each key. And a driver 2b (not shown) for driving.
According to the lighting control signal supplied from U5, the corresponding light emitting means 2a is driven to be lit to display a key to be depressed and a designated musical tone parameter as an indicator. As the light emitting means 2a, an LED (light emitting element) that emits a single color light may be provided for a plurality of colors, or an LED in which an element that emits a plurality of colors is integrally formed is used.

A panel switch group 3 includes various switches and generates a switch event according to the operated switch. The panel switch group 3 is provided with a power switch for turning on / off the power and a plurality of parameter selection switches for selecting the type of the musical tone parameter to be displayed using the key press guide unit 2. The tone parameters selected by the parameter selection switch include:
For example, parameters relating to performance operations such as touch sense and velocity, parameters relating to effects such as pan position and reverb depth, and parameters relating to sound source characteristics such as harmonic components are exemplified.

Reference numeral 4 denotes a display unit composed of an LCD panel or the like, which displays the operation mode of each section of the musical instrument according to a display control signal supplied from a CPU 5 described later. CPU5
Controls musical instruments in accordance with performance information generated in response to a performance operation to synthesize musical tones, while using the key press guide unit 2 to input musical tone parameters selected in response to operation of the above-described parameter selection switch. The key is displayed on the keyboard, and the displayed musical tone parameters are edited according to the key operation.

The ROM 6 stores, in addition to the various control programs loaded into the CPU 5, performance data forming a lesson demo song for key press guidance and various tone parameters to be factory preset. The various musical tone parameters referred to here are data for instructing a musical tone synthesizing form of the sound source 8, for example, parameters relating to performance operations such as touch sense and velocity, and parameters relating to effects such as pan position and reverb depth. Alternatively, it indicates a parameter related to a sound source characteristic such as a harmonic component. A predetermined parameter set of the plurality of tone parameters is transferred and set to the parameter area of the RAM 7 at the time of initialization. The RAM 7 is used as a work area of the CPU 5, and has a register area for temporarily storing various register / flag data, and a parameter area in which a parameter set is transferred from the ROM 6 at the time of initialization.

Reference numeral 8 denotes a sound source which is constituted by a well-known waveform memory reading system or harmonic synthesis system and has a plurality of tone generation channels which operate in a time-division manner. This sound source 8
In the case of the waveform memory reading method, waveform data of various timbres are stored. Of these, the waveform data designated by the CPU 5 is read out, and the waveform data W is obtained by modifying the waveform data according to the parameter set. To form
On the other hand, in the case of the overtone synthesis method, an arbitrary harmonic structure is obtained by superimposing a fundamental component and a selectively read harmonic component of a fundamental component and a plurality of harmonic components stored in advance. Is formed. 9 is D /
The A conversion circuit converts the output of the sound source 8 into an analog waveform signal and supplies the analog waveform signal to the sound system 10 at the next stage.
The sound system 10 performs, for example, filtering such as removing unnecessary noise from an analog waveform signal supplied from a preceding stage, amplifies the signal, and amplifies the filtered signal.
Pronounce from

B. Next, the operation of the embodiment will be described with reference to FIGS. Hereinafter, the operation of the main routine will be described first with reference to FIG. 2 as the entire operation, and then the operation of the main processing routine according to the gist of the present invention will be described sequentially. (1) Operation of Main Routine First, when the power switch is turned on, the CPU 5
When a predetermined control program is read from the ROM 6 and loaded into itself, the main routine shown in FIG. 2 is executed, and the process proceeds to step SA1 to initialize various register flags provided in the RAM 7 or to execute a parameter setting read from the ROM 6. Is performed in the parameter area. Thereafter, when the process proceeds to step SA2, a switch process corresponding to the operated switch type is executed.

Subsequently, in step SA3, a keyboard process for instructing the sound source 8 to sound / mute is executed in response to the key press / release operation. In step SA4, when the automatic performance switch is turned on, While automatically performing (playing back) the performance data of the lesson demo tune stored in the ROM 6 in synchronization with a predetermined tempo, key press guidance is performed in the same manner as in the related art.
Perform other processing. And after this, step SA
2 and then repeat until the power switch is turned off.
Steps SA2 to SA4 are repeated.

(2) Operation of Switch Processing Routine Next, the operation of the switch processing routine will be described with reference to FIG. When this routine is executed via step SA2 of the main routine (see FIG. 2), C
The PU 5 advances the process to step SB1 shown in FIG. 3, and scans the panel switch group 3. Next, in step SB2, it is determined whether or not there is a parameter selection switch that has been turned on based on the switch scanning result. If there is no turned-on parameter selection switch, the determination result is "NO", and the process proceeds to Step SB4 to execute other switch processes. When the parameter selection switch is turned on, the determination result is ""YES", the process proceeds to step SB3, and a parameter display editing process described later is executed.

(3) Operation of Parameter Display Editing Processing Routine Next, the operation of the parameter display editing processing routine will be described with reference to FIGS. Now, as described above, when this routine is executed in response to the ON operation of the parameter selection switch, the CPU 5 executes step S shown in FIG.
The process proceeds to C1, and the parameter assigned to the parameter selection switch that has been turned on is read from the parameter area of the RAM 7. Then, in step SC2, the read parameters are converted into key assignment data to be displayed on the keyboard 1. The key assignment data is, for example, data indicating which key corresponds to the read parameter when all keys of the keyboard 1 are set as the display range. When the parameters are converted to key assignment data, it may be possible to variably specify whether all keys of the keyboard 1 are to be in the display range or a predetermined key range is to be in the display range. Parameter display is possible only in a desired key range. In step SC3, a lighting instruction is given to the key press guide unit 2 in accordance with the key assignment data, and parameters are displayed on the keyboard 1.

Therefore, for example, when the parameter selection switch to which the touch sense is assigned is turned on, the currently set touch sense level is read from the parameter area of the RAM 7 and converted into key assign data. After that, the key press guide section 2 is turned on in accordance with the key assignment data, and the keyboard 1 functions as an indicator, as shown in FIG. 5A, and the touch sense level becomes clear at a glance. Then, step SC4
Then, it is determined whether or not a key-depressing operation has been performed within a predetermined time during which this indicator display is maintained. If there is no key-depression, the determination result is "NO", and the process proceeds to step SC5. Turn off the light and end the indicator display.

On the other hand, if a key press operation is performed during the indicator display period, the result of the determination in step SC4 is "YE
S ", the process proceeds to Step SC6, generates key assignment data corresponding to the depressed key, converts the key assignment data into parameter values, and generates the key assignment data in accordance with the newly generated key assignment data. Lights up. Next, at step SC7, the converted parameter value is updated and registered in the parameter area of the RAM 7 as newly input. For example, as shown in FIG.
When a key is pressed to increase the touch sense level as shown in FIG. 5B when the touch sense level is displayed as an indicator, the pressed keys are turned on, and the newly input touch is performed. While the sense level is indicated by an indicator, the newly input touch sense level is updated and registered in the parameter area of the RAM 7.

As described above, according to the present embodiment, when the parameter selection switch is turned on, the parameter of the type corresponding to the parameter selection switch is read from the parameter area of the RAM 7 and converted into key assignment data. Then, by driving the key press guide section 2 in accordance with the converted key assignment data, the parameters are displayed on the keyboard 1 as indicators. Furthermore, if a key press operation is performed during such an indicator display period,
A new key-pressed parameter is displayed on the keyboard 1 based on the key assignment data corresponding to the key-pressed key, and the newly input parameter is updated and registered in the parameter area of the RAM 7. Therefore, it is possible to display the tone parameters on the keyboard and change the displayed tone parameters in accordance with the key operation.

In the above-described embodiment, the indicator display and the update registration of the touch sense level have been described as an example. However, the types of parameters to be applied are not limited to these, and various types used in electronic musical instruments can be used. Are applicable. Also, the display mode is not limited to the indicator display as shown in FIG. 5, and the lighting color and the blinking cycle may be changed according to the type of parameter to be displayed.

C. Modified Example Next, a modified example will be described with reference to FIGS.
This modification is different from the above-described embodiment in that a list of discrete parameters such as harmonic components is displayed and a part of the displayed parameters is changed by a key operation. Hereinafter, an operation of a modified example that embodies such a difference will be described.

As in the above-described embodiment, when this routine is executed in response to the ON operation of the parameter selection switch,
The CPU 5 advances the process to step SD1 shown in FIG. 6, and reads a harmonic frequency data set from the parameter area of the RAM 7 as a parameter assigned to the parameter selection switch that has been turned on. The overtone frequency data set is used when the sound source 8 is configured by the overtone synthesis method, and is formed from a fundamental component and a plurality of harmonic components.

When the overtone frequency data set having such an attribute is read from the parameter area of the RAM 7, the CPU 5 proceeds to step SD2 to display the read overtone frequency data set discretely on the keyboard 1. Convert to key assignment data. That is, each key of the keyboard 1 is assigned to the frequency axis (or logarithmic frequency axis).
In the harmonic frequency data set, the fundamental component is assigned to the lowest key, and each of the plurality of harmonic components is assigned to the corresponding key. Then, step SD3
Then, a lighting instruction is given to the key press guide unit 2 in accordance with the key assignment data, whereby, for example, as shown in FIG. 7 (a), each key corresponding to the fundamental component and the second to fourth harmonics, respectively. Is lit, and the overtone component on the keyboard 1 becomes clear at a glance.

Next, in step SD4, it is determined whether or not the lit key has been pressed within a predetermined time during which the overtone component display is maintained. If there is no key pressed, the determination result is "NO".
And the process proceeds to Step SC5, where the key press guide unit 2
Is turned off, and the overtone component display ends. On the other hand, it is assumed that the key corresponding to the second harmonic is pressed during the display period, for example. Then, the result of the determination in step SD4 becomes “Y
ES ", the process proceeds to Step SD6, and the overtone frequency data corresponding to the depressed key is deleted from the parameter area of the RAM 7, and the key depressing guide unit is turned off so that the light emitting means 2a provided for the key is turned off. Instruct 2 Thereafter, the process proceeds to step SD7, where each overtone frequency data set corresponding to the currently lit key is updated and registered in the parameter area of the RAM 7 as a newly input data set, and this routine is completed.

As described above, according to the modification, the overtone frequency data set is read from the parameter area of the RAM 7 in response to the operation of turning on the parameter selection switch, and the overtone frequency data set is discretely stored on the keyboard 1. It is converted into key assignment data to be displayed as a list, and based on the converted data, the key press guide unit 2 is instructed to turn on each key corresponding to a fundamental tone component and a plurality of harmonic components constituting a harmonic frequency data set. Display harmonic components above. If the lit key is depressed within a certain period of time during which this display is maintained, the overtone frequency data corresponding to the depressed key is deleted from the parameter area of the RAM 7 and arranged on the key. Since the key press guide unit 2 is instructed to turn off the light emitting means 2a, the overtone frequency data set corresponding to the key currently lit is updated and registered in the parameter area of the RAM 7 as a newly input data set. It is possible to display tone parameters on the keyboard and change the displayed tone parameters in response to key operations.

In the modified example, one of a plurality of harmonic components is deleted. However, instead of this, a new harmonic component is added or a fundamental component is changed. It is good also as a mode which also changes each harmonic component. This makes it possible to adjust the tone color of the musical tone formed by the overtone synthesis method by key operation, and furthermore, it is possible to intuitively grasp the tone processing operation. In addition, regarding the display mode, not only the keys corresponding to the fundamental tone component and the keys corresponding to the multiple harmonic components can be simply turned on, but also the visibility can be improved by changing the emission luminance and color tone for each component. Further, when any one of a plurality of harmonic components is deleted or a new harmonic component is added in response to a key operation, a tone using the harmonic frequency data set newly input by the key operation is actually generated. You may do it.

[0029]

According to the first aspect of the invention, when a tone parameter to be displayed is selected from a plurality of tone parameters stored in the storage means, the selected tone parameter is converted into key assign data. The light emitting means is turned on in accordance with the key assignment data, and the musical tone parameters are displayed on the keyboard for a certain period of time. When any key is pressed during this display period, the key assignment data corresponding to the pressed key is displayed. Since the tone parameters are converted into tone parameters and updated and registered in the storage means as new inputs, tone parameters can be displayed on the keyboard, and the displayed tone parameters can be changed according to key operations. According to the second aspect of the present invention, while the tone parameters are displayed for a certain period,
When any key is depressed, the key assignment data corresponding to the depressed key is displayed as a newly input tone parameter, so that the newly depressed tone parameter can be visually recognized on the keyboard. . According to the third aspect of the present invention, when a lit key is pressed during the tone parameter display period, the key assignment data corresponding to the pressed key is converted into a tone parameter to be deleted. Since the tone parameters are deleted from the storage means, the tone parameters can be edited by key operation. According to the fourth aspect of the present invention, since a predetermined key range in the keyboard is variably designated as a display range, parameters can be displayed only in a desired key range.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment according to the present invention.

FIG. 2 is a flowchart showing an operation of a main routine.

FIG. 3 is a flowchart showing an operation of a switch processing routine.

FIG. 4 is a flowchart showing an operation of a parameter display editing processing routine.

FIG. 5 is a diagram illustrating an example of an operation of a parameter display editing processing routine.

FIG. 6 is a flowchart showing an operation of a parameter display editing processing routine according to a modified example.

FIG. 7 is a diagram illustrating an example of an operation of a modified example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Keyboard (key pressing input means) 2 Key pressing guide part 2a Light emitting means (light emitting means) 2b Driver 3 Panel switch group (parameter selecting means) 4 Display part 5 CPU (conversion means, display control means, key pressing input means) 6 ROM 7 RAM 8 Sound source 9 D / A conversion circuit 10 Sound system

Claims (4)

[Claims] 1. An electronic musical instrument having a function of illuminating a light emitting means corresponding to a key to be played and guiding key depression among light emitting means arranged for each key of a keyboard. Parameter selecting means for selecting a desired tone parameter to be displayed from the stored tone parameters; and a tone parameter selected by the parameter selecting means when a light emitting means arranged for each key of the keyboard is set as a display range. And a key assignment data representing which key is to be assigned to the key assignment data. The light emitting means is turned on in accordance with the key assignment data converted by the conversion means, and a tone parameter is displayed on the keyboard for a certain period of time. If any key on the keyboard is depressed while the display control means displays the tone parameters for a certain period of time, Has been to convert the key assignment data corresponding to the key to the tone parameters, the electronic musical instrument characterized by comprising a key depression input means for updating registered in the storage unit as a new input. 2. The display control means according to claim 1, wherein when any of the keys of the keyboard is depressed while the musical tone parameters are being displayed for a certain period of time, key assignment data corresponding to the depressed key is displayed. 2. The electronic musical instrument according to claim 1, wherein the electronic musical instrument is displayed as a newly input musical tone parameter. 3. The key input means, when a lit key is depressed during a tone parameter display period, deletes key assignment data corresponding to the depressed key from the tone parameter to be erased. 2. The electronic musical instrument according to claim 1, wherein the musical tone parameters are deleted from the storage means. 4. The electronic musical instrument according to claim 1, wherein said conversion means variably designates a predetermined key range in a keyboard as a display range.