JP3704782B2 - Electronic musical instruments - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic musical instrument in which a sensor for detecting a key depression state is provided independently for each key, and a musical tone is controlled according to the output of each sensor.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known an electronic musical instrument in which a sensor for detecting a key pressing state is provided independently for each key and a musical tone is controlled according to the output of each sensor.
[0003]
For example, in Japanese Patent Laid-Open No. 4-146493, at least two sensors are provided for each key, and the musical tone is controlled according to the output of each sensor, so that the expressive power that faithfully reflects the player's intention is rich. An electronic musical instrument that can perform smoothly is described.
[0004]
Here, the musical tone control according to the output of each sensor is, for example, when the musical tone to be controlled is a timbre parameter, the timbre parameter is a modulated wave output from an LFO (Low Frequency Oscillator), a pitch bender, a modulation wheel, or the like. This is a control that modulates or changes according to the output from the performance operator. When the pitch of the musical sound is modulated or changed, the effect is called vibrato, and when the volume is modulated or changed, the effect is called tremolo. .
[0005]
The parameters that can be controlled are not limited to the timbre parameters, but include various parameters such as the cutoff frequency of the filter and the sound image localization position. The sensor output used for control includes initial touch information at the time of key depression and aftertouch. There is information.
[0006]
[Problems to be solved by the invention]
However, in the above-described conventional electronic musical instrument, since the musical tone is controlled according to the key pressing state detected independently for each key, the following problems have occurred.
[0007]
For example, it is assumed that pitch, that is, vibrato control is performed as a parameter to be controlled, and a pressure sensor for detecting the pressure at the time of key depression is provided for each key as a sensor.
[0008]
When the performer depresses a plurality of keys, a signal corresponding to the depressed state, that is, a signal corresponding to the pressure is output from each depressed key. For example, if a player applies a force to a finger that is pressing a chord, vibrato is applied to the musical sound corresponding to the key to which the force is applied. Although the magnitude of the vibrato pitch shift changes according to the pressure, it is difficult to control the sensor output to a player's favorite value for a plurality of keys with one hand.
[0009]
When applying a vibrato to a chord, if the pressure of the plurality of keys is not changed in the same way, what is pronounced as a consonant will become a dissonant. This state occurs because the pitch deviation of the vibrato is not equally applied to each sound constituting the chord.
[0010]
Thus, in the case where the musical sound parameter control corresponding to each key is performed according to the sensor output independent of each key, there is an advantage that the parameter control can be performed independently for each key (ie, each sound). On the other hand, there was also a problem that the performance was difficult and the intended effect could not be obtained. In particular, when the performer was a beginner, he could not perform as expected.
[0011]
The present invention has been made in view of the above problems, and an object of the present invention is to provide an electronic musical instrument that can easily perform a player's performance according to the player's ability.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention comprises a plurality of keys, a key press detecting means for detecting the key press for each key, and a group of keys in the key press at which the key press is detected. And a key grouping means for detecting a state after the key is pressed for each key and detecting performance information for each key in accordance with the detected state after the key is pressed. Based on the generated performance information of the selected key , the selection means for selecting one key that meets a predetermined priority condition from the grouped keys, and the generated performance information and having a braking Gosuru musical tone control means musical tones corresponding to the grouped key.
[0013]
Preferably, the player has grouping condition instruction means for instructing a desired grouping condition from a plurality of predetermined grouping conditions, and the key grouping means includes the grouping condition instruction means. According to the grouping condition instructed by , keys in the key depression in which the key depression is detected are grouped.
[0014]
Further, preferably, has a priority condition instructing means for a player to instruct the desired preferences from a plurality of preferences that are predetermined, said selection means, preferences designated by the preferences instructing means According to the method, one key is selected from the grouped keys .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0016]
FIG. 1 is a block diagram showing a schematic configuration of an electronic musical instrument according to an embodiment of the present invention.
[0017]
In the figure, the electronic musical instrument of the present embodiment converts a keyboard unit 1 for inputting pitch information and a key depression state, an analog signal output from the keyboard unit 1 into a digital signal, and time-division data. A keyboard interface (I / F) 2 that is output as, a CPU 3 (not shown), for example, a control unit 3 that controls the entire apparatus, a ROM 4 that stores a control program executed by the control unit 3, table data, and the like, A RAM 5 that temporarily stores various parameter information, calculation results, various input information, and the like, and a musical tone signal is generated according to pitch information input from the keyboard unit 1 and various input information input from the operator group. A sound source 6 to be performed, an effect imparting unit 7 for imparting various effects to the musical sound signal generated by the sound source 6, and a musical sound signal to which an effect is output output from the effect imparting unit 7 is converted into sound. It is constituted by a sound system 8 consisting of a speaker, etc. For example.
[0018]
The keyboard unit 1 includes a key switch circuit 11 for detecting pitch information and a key sensor (for example, a pressure sensor) 12 for detecting a key depression state, which are arranged for each key on a key (not shown). I have.
[0019]
FIG. 2 is a diagram showing a data format of a timbre memory area secured at a predetermined position in the RAM 5.
[0020]
As shown in the figure, in the timbre memory area, various timbre parameters are stored for each timbre (voice name), and when the performer selects a timbre, the timbre parameter corresponding to the timbre is set in the sound source 6 or the like. Is done. Here, the timbre parameters are assigned a waveform number when the sound source 6 is a waveform memory sound source, a filter to be used, an EG parameter given to the envelope generator (EG), a parameter given to the effect applying unit (effector) 7, and a reverb. There are parameters when doing so. Furthermore, the neighboring key difference parameter and the priority means parameter, which are the features of the present invention, are also stored.
[0021]
The adjacent key difference parameter is a parameter for determining which keys are simultaneously controlled when the performer is pressing a plurality of keys, and is a parameter for determining grouping conditions. In the present embodiment, the performer can select and set a desired one from eight types of grouping conditions “m”, “M”, “n”, “1” to “5”. . For example, when “m” is selected as the grouping condition, only when the key code between adjacent keys among the pressed keys is “1 degree”, “4 degrees”, or “8 degrees”, The keys are controlled simultaneously, i.e. as a group simultaneously, the other keys are controlled independently. When “n” is selected as the grouping condition, this simultaneous control is stopped (off), and all keys pressed are controlled independently.
[0022]
The priority means parameter is a parameter for determining a priority order for selecting one key from the keys belonging to the group determined by the adjacent key difference parameter. In the present embodiment, the performer is: (1) large amplitude, (2) small amplitude, (3) large frequency, (4) highest sound, (5) lowest sound, (6) late arrival sound, (7) A desired one can be selected and set from eight kinds of priority conditions, that is, a large change speed, and an average of sensor output. For example, when “(1) large amplitude” is selected as the priority condition, the sensor output from each key sensor 12 of the key that matches the grouping condition is selected and selected. Each tone of the keys belonging to the group is controlled by the sensor output. This control method will be described later.
[0023]
Control processing executed by the electronic musical instrument configured as described above will be described below with reference to FIGS.
[0024]
FIG. 3 is a flowchart showing a procedure of a main routine executed by the control unit 3, particularly the CPU.
[0025]
In the figure, first, initial settings such as resetting various ports and clearing the RAM 5 are performed (step S1).
[0026]
Next, a timbre setting processing subroutine (details will be described later with reference to FIG. 4) for setting parameters related to the timbre in accordance with the setting operation of the performer is performed (step S2).
[0027]
Then, a key processing subroutine (details thereof will be described later with reference to FIG. 5) corresponding to the pressed state of each key on the keyboard unit 1 is executed (step S3), and a vibrato processing subroutine (details thereof) for performing vibrato control is executed. (To be described later with reference to FIG. 6) is executed (step S4).
[0028]
Furthermore, after performing other processes (for example, sound generation process) other than the processes described above (step S5), the process returns to step S2 and the above-described processes are repeated.
[0029]
FIG. 4 is a flowchart showing a detailed procedure of the tone color setting processing subroutine of step S2.
[0030]
In the figure, first, it is determined whether or not the performer has selected a timbre (step S11). When the timbre is selected, the process proceeds to step S12. When the timbre is not selected, the main timbre processing subroutine is immediately terminated. .
[0031]
In step S12, when the performer selects the grouping condition and priority condition for the selected tone color, the grouping condition and priority condition are stored in the tone color memory area.
[0032]
Next, when the performer sets parameters other than the parameters set in step S12, the parameter setting process is performed (step S13), and then the main sound setting process subroutine is terminated.
[0033]
FIG. 5 is a flowchart showing a detailed procedure of the key processing subroutine of step S3. Note that this key processing subroutine shows only processing for one key for convenience of explanation, but actually, it is necessary to perform the same processing for all the keys arranged in the keyboard unit 1. is there.
[0034]
In the figure, first, the state of each key switch circuit 11 is detected to determine whether or not there is a key-on (key depression) (step S21). When there is a key-on, a key-on process corresponding to the key (for example, Then, a process such as obtaining a key code of the key or sending the key code to the sound source 6) is performed (step S22).
[0035]
Next, it is determined whether or not there are other keys being pressed (step S22). If there are other keys that are being pressed, all the keys that are being pressed and the above-described step S21. The pitch difference from the key determined in step 1, that is, the newly pressed key is calculated (step S24). Here, when there are a plurality of other keys being pressed, the pitch difference between each key and the newly pressed key is calculated.
[0036]
Then, it is determined whether or not there is a key (other pressed key) having a pitch difference that matches the currently selected grouping condition among the calculated pitch differences (step S25). If there is a key with a pitch difference that matches the grouping condition, the same group number as the key is attached to the newly pressed key and stored (step S26).
[0037]
FIG. 7 shows an example of the contents stored in a memory area (hereinafter referred to as “group number storage area”) for storing the key code being pressed and the corresponding group number. As shown in the figure, the key codes being pressed are stored in the order of the channels to which the sound is assigned (in this embodiment, 32 sound channels are reserved) and correspond to the key codes. Then the group number is stored.
[0038]
In the figure, the key code KC4 assigned to the sound channel 1 and the key code KC2 assigned to the sound channel 2 belong to the same group (group 1) and are assigned to the sound channel 31. An example in which KC3 belongs to another group (group 2) is shown. A numerical value other than an integer value of 0 to 127 is stored in an area for storing a key code of a channel to which no key code is assigned. In the present embodiment, the integer value of 0 to 127 indicates one of the key codes, so that it is possible to determine that it is not a key code if other numerical values are stored.
[0039]
Returning to FIG. 5, when there is no other pressed key in the determination of step S23, or when the calculated pitch difference does not match the grouping condition in the determination of step S25, the newly pressed key is used. After a new group number is assigned to the key (key code) that has been locked and stored in the group number storage area (step S27), the process proceeds to step S28.
[0040]
On the other hand, if it is determined in step S21 that there is no key depression, steps S22 to S27 are skipped and the process proceeds to step S28.
[0041]
In step S28, it is determined whether or not there is a key-off (key release). If there is a key-off, the process proceeds to step S29. If there is no key-off, the key processing subroutine is immediately terminated.
[0042]
In step S29, the group number corresponding to the key-off key (key code) in the group number storage area is set to “0”, and the key code of the key is determined in advance other than the integer value of 0 to 127. To the numerical value.
[0043]
In the subsequent step S30, after performing a key-off process (for example, a process of sending the key-off of the key code to the sound source 6), this key processing subroutine is terminated.
[0044]
FIG. 6 is a flowchart showing a detailed procedure of the vibrato processing subroutine of step S4.
[0045]
In the figure, first, it is determined whether or not the output from each of the key sensors 12 has changed (step S41). When there is no change in the sensor output, the vibrato processing subroutine is immediately terminated while the sensor output is changed. If there is, the process proceeds to step S42.
[0046]
In step S42, the sensor of another key assigned the same group number as the key corresponding to the sensor determined in step S41 (hereinafter referred to as “sensor for determination”) is checked, and It is determined whether there is a sensor output of another key. As a result of this determination, when there is a sensor output of another key in the same group, the other sensor output is compared with the sensor output of the sensor related to the determination, and the priority condition set in the priority means parameter Is determined whether or not (step S43).
[0047]
If it is determined in step S43 that the sensor output of the sensor related to the determination conforms to the set priority condition, the musical sounds corresponding to all keys in the group are determined according to the sensor output of the sensor related to the determination. After vibrato control (step S44), this vibrato processing subroutine is terminated.
[0048]
On the other hand, if it is determined in step S43 that the sensor output of the sensor related to the determination does not meet the set priority condition, this vibrato processing subroutine is immediately terminated.
[0049]
Furthermore, if it is determined in step S42 that there is no sensor output of another key in the same group, step S43 is skipped and the process proceeds to step S44. Thereby, even when there is only one sensor output corresponding to a key in the same group, the tone of the corresponding key is controlled according to the sensor output.
[0050]
As described above, in the present embodiment, keys that are simultaneously pressed are grouped according to the grouping condition, and a key that matches the priority condition is selected from the key pressing keys in the same group. Since the vibrato of all musical sounds corresponding to the key press keys in the group is controlled in the same manner by the sensor output from each key sensor 12 corresponding to the key, the same applies to all the keys in the same group. Even without the pressure, you can perform as you want. For example, if the performer presses a chord and applies vibrato to the chord, and if the chord matches the set grouping condition, the performer will play each note of the pressed chord. Even if you don't apply the same pressure to all the keys corresponding to, you can pronounce it with Kyowa. Further, if the technique of the performer is improved and the vibrato can be applied to a plurality of keys in the same manner, by setting “n” in the adjacent key difference parameter described with reference to FIG. Control can be stopped. Therefore, it is possible to easily perform the performance as intended by the performer according to the ability of the performer.
[0051]
In the present embodiment, a pressure sensor is employed as each key sensor 12 and the pressure at the time of key depression is detected. However, the present invention is not limited to this, and the speed of the key at the time of key depression may be detected. The key displacement may be detected. Further, the direction of pressure to be detected when the key is pressed is not limited to the direction in which the key is pressed, and may be in the horizontal direction. Furthermore, the key pressing state (pressure, speed, displacement, etc.) may be detected by any sensor that can detect the key pressing state, such as an optically detecting sensor.
[0052]
In this embodiment, pitch is adopted as a musical sound parameter to be controlled, and the present invention is applied to vibrato control. However, the present invention is not limited to this, and may be applied to other timbres or effect parameters. Nor.
[0053]
Furthermore, in the present embodiment, the grouping condition can be arbitrarily selected by the performer from eight kinds of conditions as shown in FIG. 2, but the present invention is not limited to this, and the key pressing sound is “chord”. It is also possible to determine whether there is a “single tone” and perform the above control only when it is a “chord”.
[0054]
In addition, the grouping condition may be different between the “left key range” and the “right key range”. At this time, a predetermined position (split point) of the keyboard is set as a boundary between the “left key range” and the “right key range”.
[0055]
【The invention's effect】
As described above, according to the present invention, the detected key depression per the respective key by the player, the key in the depressed issued該検are grouped, the key the key depression is detected The state after key depression is detected for each key, and performance information is generated for each key in accordance with the detected state after key depression, and conforms to a predetermined priority condition from the grouped keys. one key is selected to be, of the selected key, based on the generated performance information, since tone corresponding to the grouped key is controlled, the performance in accordance with the player's ability It is possible to easily perform the performance as intended.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a schematic configuration of an electronic musical instrument according to an embodiment of the present invention.
FIG. 2 is a diagram showing a data format of a timbre memory area secured at a predetermined position in the RAM of FIG. 1;
FIG. 3 is a flowchart showing a procedure of a main routine executed by the control unit of FIG.
FIG. 4 is a flowchart showing a detailed procedure of a timbre setting process subroutine of FIG. 3;
FIG. 5 is a flowchart showing a detailed procedure of a key processing subroutine of FIG. 3;
FIG. 6 is a flowchart showing a detailed procedure of a vibrato processing subroutine of FIG. 3;
FIG. 7 is a diagram illustrating an example of contents stored in a group number storage area for storing a key code being pressed and a corresponding group number.
[Explanation of symbols]
3 Control unit (key grouping means, selection means, musical tone control means, grouping condition instruction means, selection condition instruction means)
5 RAM (grouping condition instruction means, selection condition instruction means)
11 Each key switch circuit (key press detection means)
12 Each key sensor (performance information generating means)

Claims (3)

A key depression detecting means for providing a plurality of keys and detecting the key depression for each key;
Key grouping means for grouping keys in the key press in which the key press is detected;
Performance information generating means for detecting a state after the key is depressed for each key, and generating performance information for each key according to the detected state after the key depression; ,
Selecting means for selecting one key that meets a predetermined priority condition from the grouped keys ;
The selected key based on the generated performance information, the electronic musical instrument characterized by having a braking Gosuru musical tone control means musical tones corresponding to the grouped key. A grouping condition indicating means for the performer to indicate a desired grouping condition from a plurality of predetermined grouping conditions;
2. The key grouping means groups keys in the key depression in which the key depression is detected, according to the grouping condition designated by the grouping condition instruction means. Electronic musical instrument. Player from a pre-determined plurality of preferences has a preferences instruction means for instructing a desired preferences,
It said selection means, in response to indicated preferences by the preferences indicating means according to claim 1 or 2, characterized in that selecting one key from among the grouped key Electronic musical instruments.

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