JP2692677B2 - Electronic percussion 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 percussion instrument having a plurality of pads.

[0002]

2. Description of the Related Art Electronic percussion instruments include a plurality of pads and pad detection means for detecting that the pads have been hit (pad-on), and musical tone control signal generation for generating musical tone control signals of pitches corresponding to the respective pads. Equipped with means. In addition, in this type of electronic percussion instrument, the number of pads is set to a number that can form a scale tone with a pitch tone associated with each pad, and a melody can be played with a tone color such as marimba or timpani. There is something like this.

[0003]

However, in the above-mentioned conventional electronic percussion instrument, since only one pitch is assigned to one pad, for example, 12 pitches are assigned to one octave pitch. There was a disadvantage that the whole musical instrument became large because individual pads were needed.

An object of the present invention is to provide an electronic percussion instrument which can produce a large number of pitches with a small number of pads.

[0005]

SUMMARY OF THE INVENTION The present invention provides a plurality of pads, a pad detecting means for detecting the state of each pad, a tone color selection operator for assigning a tone color of a scale tone or a drum tone to each pad, and each pad. A pitch change instructing means for instructing the shift of a semitone when a scale tone is assigned to a tone, and a pitch change instructing means for instructing the generation of a predetermined tone color when a drum tone is assigned, and a pitch change for detecting ON / OFF of the pitch change instructing means. When a scale tone is assigned to each pad by the instruction detection means and the tone color selection operator, when the ON state of any pad is detected by the pad detection means while the pitch change instruction means is OFF. , Generates the tone control signal of the scale assigned to that pad,
When the ON state of any of the pads is detected by the pad detecting unit while the pitch change instructing unit is ON, a tone control signal having a pitch obtained by shifting the scale assigned to the pad by a semitone is generated, When a drum sound is assigned to each pad by the tone color selection operator, a tone control signal generating means for generating a tone control signal for generating a tone of the predetermined tone color when the pitch change instructing means is turned on, It is characterized by comprising.

In the present invention, when a pitch tone is assigned to each pad and the pitch change instructing means is operated by the performer during a performance, a predetermined pad, for example, is tapped (turned on). The pitch associated with the pad is changed by a predetermined pitch, for example, a semitone. Further, when the pad is returned to the original pitch, the operation of the pitch change instructing means is stopped. Due to such an action, a large number of scale sounds can be generated with a small number of pads.

Further, when a drum sound is assigned to each pad and the pitch change instructing means is operated by the player during the performance, a predetermined tone color, for example, a musical sound of a bass drum is generated at the time of the operation. In this way, the function of the pitch change instructing means can be changed by assigning a scale note or a drum note to each pad.

In this case, if a foot pedal, for example, is used as the pitch change instructing means, a pitch change instruction and a tone generation of a predetermined tone color can be selectively performed easily even while playing with both hands. be able to.

[0009]

1 is a plan view of an electronic percussion instrument according to an embodiment of the present invention.

An operation panel 2 is arranged on the front side of the electronic percussion instrument body 1. The operation panel 2 is provided with a power switch 20 and a volume 2 for adjusting the output volume from the speaker.
A one or two digit LCD display 22, a pitch or tone to be assigned to each pad, a percussion set switch 23 for setting a percussion set name such as an auto bass chord mode (ABC mode), and a style for setting chord tone generation patterns. A switch 24, a numeric keypad 25 for inputting a numerical value, and other function switches 26 are provided.

A foot pedal 3 is further connected to the electronic percussion instrument body 1 by a cable 30. The hood pedal 3 produces a sound of a predetermined timbre such as a bass drum during its operation (when pressed) according to the type of percussion set name set by the percussion set switch 23, and is turned on at that time. Raise the pad sound by a semitone.

A total of 8 is provided in the substantially central portion of the electronic percussion instrument body 1.
Individual pads P (P1 to P8) are provided. As shown in FIG. 2, the piezoelectric sensor 4 is provided on the bottom of the thin plate P.
Is attached, and the piezoelectric sensor 4 detects when the pad P is on (striking) and the strength. Speakers 5 are arranged on the left and right of the electronic percussion instrument body 1 to generate performance sounds.

In the electronic percussion instrument of the present embodiment, when the ABC mode is set as the percussion set name by the percussion set switch 23, the AB is set for each pad.
If the chord designation function for C is assigned and the time from the first turning on of each pad to the second turning on is within a predetermined time, chord chord data associated with that pad,
That is, chord data consisting of root note data and chord type data is generated. Further, when the percussion set name is other than the ABC mode, a tone color corresponding to the set name is set to each pad, or a combination of tone color and scale tone is set for each pad. Furthermore, the function of the foot pedal 3 also changes according to the name of the percussion set.

FIG. 3 shows a percussion set switch 23.
It is a figure which shows the function of each pad and foot pedal corresponding to the percussion set name set by. In the figure, when the percussion set name is "rock drum", for example, the tone color of the snare is set to the pad P2, and the tone color of the cymbal 1 is set to the pad P7. In addition, pressing the foot pedal 3 indicates that a tone of the tone color of the bass drum is generated. The name of the percussion set is "rock drum", "jazz drum",
In the case of "Synth Drum", the tones shown in the figure are set to the pads P1 to P8 respectively, but when the percussion set name is "Timpani", "Marimba", "Vibraphone", The pitch is set for the pads P1 to P8. Also, the pitch set for each pad is
Pads P1, P5, P2, P6, P3, P7, P4, P
The scales are arranged in the order of 8. When set to "Timpani", the tone color of the timpani is set to "Marimba", the tone color of Marimba is set to "Vibraphone", and the tone color of Vibraphone is set to "Vibraphone". In each of the above percussion set names, "Rock Drum", "Jazz Drum", "Synth Drum" are the set names of the drum sound group, and "Timpani", "Marimba", and "Vibraphone" are the set name of the scale notes group. Is.

When the percussion set name is ABC mode, root note data and chord type data are assigned to each pad. For example, in FIG. 3, “C” is the root note data and “Maj” is the chord type data for the pad P1 in the ABC mode.
Is assigned. That is, in the ABC mode, when the pad P1 is turned on and turned on again within a predetermined time, the root note is "C", the chord type is "Maj", and the pad P7 is turned on within a predetermined time. When the pad P8 is turned on, it indicates that the ABC performance (auto accompaniment) is performed with the chord having the root note "A" and the chord type "dim". Further, in this ABC mode, the foot pedal 3 acts so as to raise the pitch of the musical sound output from the speaker 5 by one semitone. So, for example, ABC
Pad P1 while pressing foot pedal 3 in mode
If you turn on (striking) twice in succession within the predetermined time, "C #
ABC will be performed with the code "/ Maj".

FIG. 3 shows an example of percussion set names that can be set by the electronic percussion instrument of the present embodiment, but in reality more set names can be selected.

FIG. 4 is a block diagram of the electronic percussion instrument.

The control unit includes CPU 6, ROM 7, RAM
8, a pattern memory 9, and a clock generator 10 for giving an interrupt signal to the CPU 6, and a pad detection circuit 11 and a pedal detection circuit 1 are provided to this control section via a bus 16.
2, a percussion set switch 23, a style switch 24, a numeric keypad 25, a function switch 26, a display circuit 13 including an LCD display 22, a sound source circuit 14 are connected, and a sound system 15 is connected to the sound source circuit 14. The pattern memory 9 stores a code generation pattern in the ABC mode. Pad detection circuit 11
Includes a piezoelectric sensor 4 (see FIG. 2) attached to the bottom of each pad, detects ON of each pad, and
The touch data of each pad is detected. Pedal detection circuit 1
2 detects the ON state (pressed state) of the foot pedal 3. The sound source circuit 14 receives tone color data of musical tones to be generated from the CPU 6, performance data including pad touch data, chord data and the like, a note-on signal, etc., and forms a musical tone signal from these data, and the sound system 1
5 is output. The sound system 15 outputs a musical sound from the speaker 5 when the musical sound signal is input.

The pattern memory 9 stores the code generation pattern and is read by the CPU 6 in the ABC mode. The clock generator 10 divides one bar into 96 parts based on the tempo set by a tempo setting switch (not shown), and gives an interrupt signal to the CPU 6 at each of the 96 divided timings. As described below, C
The PU 6 sends code data and octave data to the tone generator circuit 14 every time this clock interrupt occurs.

FIG. 5 shows a register group assigned to the RAM 8. Hereinafter, the flowcharts of FIG. 6 and subsequent steps executed by the CPU 6 will be described with reference to FIG.

(1) Main Routine (FIG. 6) When the CPU 6 is initially reset, such as when the power is turned on, initialization including resetting of registers is performed in step n1. Then, each subroutine of percussion set assignment processing (n2), pad processing (n3), pedal processing (n4), and style selection processing (n5) is executed, and further, at n6, various data are displayed and the operating state of the volume 21 is displayed. Processing such as detecting and setting the volume data, detecting the operation state of the tempo switch included in the function switch 26 and setting the tempo data, and the like are performed.

(2) Percussion set assignment process (FIG. 7) In this percussion set assignment process, the state of the percussion set switch 23 is detected, and data is assigned to various registers and flags in accordance with the state.
Set on / off.

First, at n10, it is determined whether or not there is an on event of the percussion set switch 23. If there is an on event, that is, if the percussion set switch 23 is operated, the operation of selecting a percussion set name is subsequently waited for (n11).

The selection of the percussion set name is performed by the ten keys 25. For example, if "1" in the numeric keypad is operated, "rock drum" is selected as the percussion set name in FIG. Also,
When "7" is pressed, "Auto base code (AB
C) "mode is selected.

Then, it is judged whether the percussion set name selected in n11 is in the "auto base chord (ABC)" mode (n12). If YES, the root note data assigned to each of the pads P1 to P8 is set in the register ROOT1 (i). Here, i represents a pad number register, and n13 is i = 1 to i = 8.
Is executed for each of. Therefore, as can be seen from FIG. 3, "C" data is set as root note data in ROOT1 (1), "E" is set in ROOT1 (2), and "C" is set in ROOT1 (8). "Is set. Further, in this n13, the code type data assigned to each pad is set in the register TYPE1 (i) as shown in FIG. Therefore, for example, “Maj” is set in TYPE1 (1) and “Mj” is set in TYPE1 (2).
7 "is set, and" dim "is set in TYPE1 (8).

After the above processing is completed, the auto base code flag ABC is set (n14).

If the percussion set name selected in n11 is not the "auto base chord (ABC)" mode, the process proceeds from n12 to n15. At n15, the tone color data assigned to the pads P1 to P8 are set in the pad tone color register TONE (i). For example, if the selected percussion set name is "rock drum", register TONE
“Synth.Snare” data is set in (1), and “Cymbal 2” data is set in TONE (8). Also, when the selected percussion set name is one of the musical scale groups such as "Timpani" and "Marimba", timpani data and marimba data are stored in each of TONE (1) to TONE (8). . Then, it is determined whether the selected percussion set name is one of the scale note groups (n16). Y
If ES, reset the pedal flag PEDF (n1
7). If NO, that is, if one of the drum sound groups, the foot pedal 3 for the pedal tone color register PED
Set the tone color data assigned to. As shown in FIG. 3, in the present embodiment, when the percussion set name is one of the drum sound groups of "rock drum", "jazz drum", and "synth drum", all the tone color data set in the register PED is bass. This is drum data.
After n18 is completed, the pedal flag PEDF is set (n19) and the process returns.

(3) Pad processing (FIG. 8) First, it is determined whether or not there is a pad-on event (n20). When any pad is hit and a pad-on event occurs, the number of the pad having the pad-on event is set in the register i (n21). Then, the state of the auto base code flag ABC is determined. If this flag ABC is in the reset state, pad touch data is set in the pad touch register PADTCH. This pad touch data is the piezoelectric sensor 4
Is output from the pad detection circuit 11 including. Then, the state of the pedal-on flag PEDON is determined. If this flag is reset, the tone generator circuit 14 is provided with a pitch data (a drum tone color in the case of a drum tone) indicating the pitch (see FIG. 3) assigned to the pad number indicated by the register i, the register. TONE (i), register PADT
The data and note-on signal respectively set in CH are sent (n25). Upon receiving these signals, the tone generator circuit 14 forms a predetermined tone signal and outputs it to the sound system 15. Further, in n24, the flag P
If EDON is set, for the tone generator circuit 14,
Pitch data indicating the pitch (see FIG. 3) assigned to the pad number indicated by register i, register TONE
The set data of (i), the instruction data for raising the pitch of the tone signal by a semitone, the set data of the register PADTCH and the note-on signal are sent (n26). As will be described later, in the flag PEDON, the percussion set name selected at that time is any one of the scale groups or A.
Set in BC mode and when the foot pedal 3 is pressed. Therefore, when the percussion set name is one of the scale note groups and the foot pedal 3 is pressed, the process proceeds from n24 to n26, in addition to the pad tone color data set in the register TONE (i). Instruction data for raising the tone signal by a semitone will be transmitted.

On the other hand, when the flag ABC is set in n22, the process proceeds to n27 to proceed to the auto base code process of the subroutine.

In the main routine of FIG. 6, if there is no pad-on event when the pad process of the subroutine n3 is reached, the process proceeds to n20 and n28. In this n28, 2
It is determined whether the second ON flag SECOND is set and the timer has elapsed for 0.5 seconds or more. This flag SECOND is a pad P in the ABC mode.
Set when any of 1 to P8 is first turned on. Further, the timer starts counting time when the flag SECOND is set. When the condition of n28 above is not satisfied, the process returns without doing anything, but when the same condition is satisfied, a certain pad was turned on in the ABC mode and the pad was not turned on again within 0.5 seconds. Means that. In this case, execute n29 or less,
Preparation is made so that the root note of the pad turned on for the first time and the chord data consisting of a predetermined chord type are output. That is, the chord type data set in the type register TYPE1 (i) is transferred to the type register TYPE2, and the root register ROO
The root note data set in the root note register ROOT4 is transferred to T2. Here, the registers TYPE2, R
OOT2 is a register used to form the final code data. Also, register TYPE1
(I) stores the code type data assigned to the pad P1 in n13 of the flowchart of FIG. Further, the register ROOT4 temporarily stores root note data assigned to any one of the pads P1 to P8 in the ABC mode when the pad is turned on for the first time. Therefore, in n29, the chord type data set in the register TYPE1 (i) is used as the predetermined chord type data, and the root note data set in the register ROOT4 is used as the root note data. After the above processing is completed, the second ON flag SECOND is reset to return this flag to the initial state (n30), and the timer is reset (n3).
1).

(4) Auto Base Code Process (FIG. 9) This auto base code process is a subroutine executed in n27 in the pad process of the subroutine of FIG.

First, at n40, the second ON flag SECO
Determine the ND status. If this flag is in the reset state, it means that the pad was turned on for the first time in the ABC mode. At this time, the set data of the root note register ROOT1 (i) is transferred to the root note register ROOT4 used as a buffer register. Here, the pad number register i stores the pad number data set in n21 of FIG. Further, the root note data assigned to each pad at n13 in FIG. 7 is set in the root note register ROOT1 (i). Therefore,
Here, the root note data of the pad having the pad-on event is set in the root note register ROOT4. Then, the state of the pedal-on flag PEDON is determined. In the ABC mode, when the foot pedal 3 is pressed, the process of raising the ABC performance sound by a semitone is performed.
In step 43, the root note data set in the root note register ROOT4 is converted into half-tone raised data and set in the same register ROOT4 again. Then, the second ON flag SECOND is set and the timer is started (n
44, n45).

After the automatic base code processing is performed as described above, if a pad-on event occurs again within 0.5 seconds, the automatic base code processing subroutine is entered again. In this case, since the second ON flag SECOND is set, the process proceeds from n40 to n46. Then, the set data of the type register TYPE1 (i) is moved to the type register TYPE2, and the root register ROOT4
The set data of is transferred to the root register ROOT2. At this stage, chord type data for forming a chord is set in the register TYPE2, and root note data for forming a chord is set in the root note register ROOT2. And the second ON flag SECOND
And the timer is reset (n47, n
48) Return.

(5) Pedal Processing Subroutine (FIG. 10) First, at n50, it is determined whether or not there is a pedal-on event. When the foot pedal 3 is pressed (there is a pedal-on event), the states of the auto base code flag ABC and the pedal flag PEDF are determined (n51, n52).
When flag ABC is set, or flag AB
When C is reset and the flag PEDF is reset, the routine proceeds to n53, where the pedal on flag PEDON is set. If the flag ABC is in the reset state and the flag PEDF is set, the process proceeds to n54. In this case, in the drum sound mode,
Since it is necessary to produce the sound of the bass drum when operating the foot petal 3, the pedal touch data is fetched from the pedal detection circuit 12 and set in the pedal touch register PADTCH (n54). After the processing of n54, the tone generator circuit 1
4, the set data of the pedal tone color register PED set in n18 of FIG. 7, the set data of the register PEDTCH (pedal touch data) and the note-on signal are sent (n55). At n55, if bass drum data is set in the pedal tone color register PED, the tone of the bass drum is output from the speaker 5. The volume of the bass drum in that case is determined by the degree of depression of the foot pedal 3.

When there is an off event of the foot pedal 3, the process proceeds to n56 and n57, and the pedal on flag PE
DON is reset.

When the pedal processing subroutine is executed as described above and any one of the percussion set names is selected from the scale group shown in FIG. 3, or the auto bass chord (ABC) mode is selected. In this subroutine, the flag PEDON is set and reset in accordance with the on / off of the foot pedal 3 in this subroutine. As described above, the set state of this flag PEDON is referred to at n24 in FIG. 8 and n42 in FIG.

(6) Style selection processing (FIG. 11) This style selection processing subroutine is executed in n5 of the main routine.

First, it is determined whether or not there is a style switch-on event. N if there is an on event for this switch
Proceeding to 61, style data is set. The style means a code generation pattern in the ABC mode. Various styles are stored in the pattern memory 9 in advance. When selecting and setting a style, the performer first turns on the style switch, and then uses the ten keys 25 to input the number corresponding to the desired style. n
This processing is performed at 61. The style number selected by the performer is the style number register ST.
It is set to YLE (n62).

(7) Clock interrupt processing (FIG. 12) This clock interrupt processing subroutine is the clock generator 1
It is executed when a clock signal (tempo clock signal) is given to the CPU 6 by 0. As described above, the tempo of the accompaniment sound (audible bass chord sound) output in the ABC mode is set by the tempo switch included in the function switch 26, and the clock generator 10 is based on the set tempo for one bar. The tempo clock is output at a rate of 96 times. First, at n70, the code generation pattern corresponding to the style number data set in the style number register STYLE is read for one clock. In each chord generation pattern data stored in the pattern memory 9, the root note data is the predetermined reference root note data and the chord type data is the "Maj" data.

Subsequently, at n71, it is determined whether or not the control data is included in the read data. When there is control data, it is the timing at which sound should be generated.
Go to the following. At n72, it is determined whether the read data is read at the first clock of one bar or at the intermediate position of one bar, that is, at the 49th clock. If so, the root register ROO
Move the set data of T2 to the root register ROOT3,
At the same time, the set data of the type register TYPE2 is moved to the type register TYPE3. These registers ROO
For T2 and TYPE2, n29 in FIG. 8 or n in FIG.
At 46, root note data and chord type data are set.

Subsequently, the read data is modified (n74). That is, the read data is corrected with the set data of the type register TYPE3 set in n73, and the set data of the root register ROOT3 is added to the read data. As described above, since the chord generation pattern data stored in the pattern memory 9 uses the root note data as the reference root note data and the chord type data as the "Maj" data, the actual chord data is formed at n74. It is necessary to modify it. That is, the data read in n70 is corrected so as to match the actual chord type, and the root note data set in the register ROOT3 is added to this to form data for each chord. Further, octave data is added at n75. This is because the code generation pattern data stored in the pattern memory 9 has different tone colors for each style, and therefore it is necessary to restore the octave suitable for each tone color at this stage. The data obtained by the above processing is used as the sound source circuit 14
(N76) and advances the clock one step (n7
7) Return. The clock advances from 1 to 96 and returns to 1 again after 96.

By the above operation, when the time from the first turn-on to the second turn-on of an arbitrary pad is within 0.5 seconds, it consists of root note data and chord type data associated with that pad. Code data can be generated and formed as a musical tone signal.

From the first turn-on of an arbitrary pad to 2
When the time until the second turn-on exceeds 0.5 seconds, the code data including the predetermined code type data can be generated.

It should be noted that the clock is 49 at n72.
When it comes to the th, n72 → n73 again and ROOT3
The contents of TYPE3 are the registers ROOT2 and TYPE, respectively.
It is updated by the set data of 2. It is not updated at other times. In this way, when a new chord is specified by another pad during the half bar, the new chord is generated after waiting for the half bar to pass. In other words, since the chord generation pattern is changed with the half bar as the minimum unit, the chord performance is always changed at the beginning of every half bar no matter which timing the pad processing for chord change is performed. The code change operation is easy, and no uneasy code change occurs, so there is no difficulty in listening.

Further, although the code generation pattern change timing is set to the first and middle positions of one bar as described above, it is not limited to this. Further, the present invention can be applied to an electronic percussion instrument including only a pad and other electronic musical instruments to which a pad is attached. Further, in the above-mentioned embodiment, the code of the auto base code can be changed, but it is also possible to change other code. In addition, in the above-described embodiment, the real-time performance of performing the performance while generating the auto bass chord can be performed, but it can also be used at the time of step input of the sequencer.

Further, in the above-described embodiment, when the percussion set name is selected as one of the scale note groups, the pitch is raised by one semitone when the foot pedal is turned on. Conversely, the pitch is lowered by one semitone. It is also possible to do so.
Further, the pitch is not limited to a semitone, and it is also possible to arbitrarily change the pitch, for example, by changing it by one octave. Further, the number of pads is not limited to eight and may be more or less.

Further, in the above-mentioned embodiment, the pitch of the tone corresponding to the pad which is turned on while the foot pedal is turned on is changed. It is also possible to change the pitch of the sound corresponding to the pad.

[0048]

As described above, according to the present invention, it is possible to shift the scale tone of each pad by a semitone by operating the pitch change instructing means, and when the halftone is not shifted, the pitch change instructing means itself is assigned. Since a predetermined tone color can be generated, a large number of scale tones can be produced with a small number of pads, and a predetermined tone color (drum tone, etc.) can also be produced by the operation of the pitch change instructing means itself. be able to. Therefore, the size of the entire electronic percussion instrument can be reduced. If a foot pedal, for example, is used as the pitch change instructing means, an operation for changing the pitch can be performed with the foot, while if the pitch is not changed, the tone color assigned to the foot pedal itself (a drum sound or the like). ) Can be generated, the pitch can be easily changed even when playing with the pads using both hands.
The foot pedal itself can produce sounds such as a pass drum.

[Brief description of the drawings]

FIG. 1 is a plan view of an electronic percussion instrument according to an embodiment of the present invention. FIG. 2 is a partial schematic cross-sectional view of a pad. FIG. 3 is a diagram showing a tone color name assigned to each pad with respect to a percussion set name. FIG. 5 is a diagram showing a register group. FIGS. 6 to 12 are flowcharts showing the operation of the CPU.

[Explanation of symbols]

 1-Electronic percussion instrument body 2-Operation panel 3-Foot pedal 4-Piezoelectric sensor 5-Speaker P (P1 to P8) -Pad.

Claims (2)

(57) [Claims] 1. A plurality of pads, pad detection means for detecting a state of each pad, a tone selection operator for assigning a tone sound of a scale tone or a drum tone to each pad, and a tone selection operation for assigning a scale tone to each pad. Pitch change instructing means for instructing a shift of a semitone and for inducing a predetermined tone color when a drum sound is assigned; pitch change instruction detecting means for detecting ON / OFF of the pitch change instructing means; When a scale tone is assigned to each pad by an operator, when the ON state of any pad is detected by the pad detecting means while the pitch change instructing means is OFF, it is assigned to that pad. Generates a tone control signal of a scale tone, and detects the ON state of one of the pads by the pad detection unit while the pitch change instruction unit is ON. When a tone is assigned to that pad, a tone control signal with a pitch that is a semitone shift of the scale tone assigned to that pad is generated. An electronic percussion instrument comprising a musical tone control signal generating means for generating a musical tone control signal for generating a musical tone of the predetermined tone color when the means is turned on. 2. The electronic percussion instrument according to claim 1, wherein the pitch change instructing means is a foot switch operable by a player's foot.