JPH10198353A - Electronic percussion instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform accurate tuning of a head, by providing an impact detecting component which detects impact onto the head as an electric signal, and display which receives the defected electric signal, processes it, and displays it according to impact point information. SOLUTION: Impact onto a head 12, its strength, its position, and a musical performance with a brush are detected from a signal which is entered from a A/D converter 20 and is detected by an impact detecting component, a head sensor 14, impact onto a rim 16 and its strength are detected from a signal which is entered from a A/D converter 20 and is detected by a rim shot sensor 18, and they are supplied to a CPU 24. The CPU 24 converts them to a musical performance information required for a music source IC 34, supplies it to the source IC 34, detects operations by a operant group 30, and displays operation mode selected by a operant of the operant group 30, a tone required for selecting tones, and tuning situation in tuning mode on a display 32.

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, and more particularly, to an electronic percussion instrument which simulates a percussion instrument such as an acoustic drum which produces a musical tone when a player strikes the instrument with a stick or the like.

[0002]

2. Description of the Related Art Generally, an electronic percussion instrument such as an electronic drum simulating an acoustic drum is known, and among such electronic percussion instruments, for example, Japanese Patent Application No. Hei 8-193996 (Japanese Patent Application No. Filing date: July 1996
A structure that can adjust the tension of a striking surface called a head as disclosed in Japanese Patent Application Laid-open No.

[0003] In this specification, adjusting the tension of a hitting surface called a head is referred to as "tuning".
Shall be referred to as

However, in the electronic percussion instrument having such a structure, a sensor for detecting a strike on the head is provided on the head. The sensor is arranged concentrically around the sensor so that the tension of the head is uniform. Unless the tuning is performed correctly, there is a problem that the hit position cannot be accurately detected.

In the electronic percussion instrument having such a structure, when the tuning of the head is changed, the output of the sensor changes even when the same portion of the head is hit. That is, there is a problem that the output of the sensor changes depending on the tuning of the head, and it is not possible to accurately detect the hitting position and the hitting force.

In addition, when the number of sensors installed in the electronic percussion instrument is small, especially in the case of a single sensor, even if the head is hit with the same hitting force, there is a difference in the sensitivity of the hit detection by the sensor depending on the hitting position. However, there is a problem that a problem occurs. Specifically, for example, when a single sensor is installed at the center of the head, even if the head is struck with the same striking force, the sensitivity is high when the center of the head is struck, but the perimeter of the head is struck. In such a case, the sensitivity was remarkably reduced.

Here, when a large number of sensors are installed in order to correct the difference in the sensitivity of the sensor due to the difference in the impact position on the head, a new problem of increasing the manufacturing cost is caused. Had become.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a display corresponding to a hit position of a head. It is an object of the present invention to provide an electronic percussion instrument device capable of easily performing accurate tuning when performing tuning.

Another object of the present invention is to provide an electronic percussion instrument device capable of correcting a change in the tension of the head due to the tuning of the head and accurately detecting the hitting position.

Another object of the present invention is to provide an electronic percussion instrument device capable of correcting a difference in sensitivity of hitting detection due to a difference in hitting position to a head so that an accurate hitting force can be detected. Things.

In addition, the present invention corrects a change in head tension due to tuning of the head and corrects a difference in sensitivity of hitting detection due to a difference in hitting position to the head, thereby accurately detecting a hitting force. It is an object of the present invention to provide an electronic percussion instrument device capable of performing such operations.

[0012]

In order to achieve the above object, according to the first aspect of the present invention, an electronic device which detects a strike as an electric signal and generates a musical tone based on the detected electric signal. In a percussion instrument device, a head capable of tuning a striking surface for striking, a striking detecting means for detecting a striking on the head as an electric signal, and an electric signal detected by the striking detecting means are inputted and processed. And a display means for performing a display corresponding to the hit point position information detected by the hit point position detecting means.

Therefore, according to the first aspect of the present invention, since a display corresponding to the hit point position information is performed by the display means, the head can be tuned while visually recognizing the display. Thus, accurate head tuning can be easily performed.

In the invention according to claim 1 of the present invention, for example, as in the invention according to claim 2, the arithmetic processing in the hit point position detecting means further corresponds to the tuning state of the head. It is also possible to have arithmetic processing correction means for performing correction.

Therefore, according to the second aspect of the present invention, the correction of the arithmetic processing for detecting the hitting point position information is performed in accordance with the tuning of the head.
The hit point position is corrected in accordance with the tuning of the head, and an accurate hit point position can be displayed.

According to a third aspect of the present invention, there is provided an electronic percussion instrument device for detecting a strike as an electric signal and generating a musical tone based on the detected electric signal. A tunable head, a hit detection means for detecting a hit on the head as an electric signal, and a hit position detection for inputting an electric signal detected by the hit detection means and performing arithmetic processing to detect hit position information Means, and arithmetic processing correcting means for correcting the arithmetic processing in the hit point position detecting means in accordance with the tuning state of the head.

Therefore, according to the third aspect of the present invention, the correction of the arithmetic processing for detecting the hit point position information is performed in accordance with the tuning of the head.
Accurate hitting point position information can be obtained in accordance with head tuning.

According to a fourth aspect of the present invention, there is provided an electronic percussion instrument device for detecting a strike as an electric signal and generating a musical tone based on the detected electric signal; A striking detecting means which is located at the center of the head and which detects striking on the head as an electric signal; and a striking means which receives the electric signal detected by the striking detecting means and performs arithmetic processing to detect striking force information. Force detecting means, hitting point position detecting means for inputting an electric signal detected by the hitting detecting means, performing arithmetic processing, and detecting hitting point position information; hitting force information detected by the hitting force detecting means; Striking force information correcting means for inputting striking position information detected by striking position detecting means and correcting striking force information in accordance with the striking point position information A.

Therefore, according to the fourth aspect of the present invention, since the hitting force information is corrected in accordance with the hitting point position information, accurate hitting force information can be obtained.

According to a fifth aspect of the present invention, there is provided an electronic percussion instrument device for detecting a strike as an electric signal and generating a musical tone based on the detected electric signal. A tunable head, a strike detection unit positioned at the center of the head, and detecting a strike on the head as an electric signal, and performing an arithmetic process by inputting the electric signal detected by the strike detection unit,
Hitting force detecting means for detecting hitting force information, hitting position detecting means for inputting an electric signal detected by the hitting detecting means, performing arithmetic processing, and detecting hitting point position information; An arithmetic processing correcting means for correcting the processing in accordance with the tuning state of the head; corrected hitting point position information detected by the hitting point detecting means for performing arithmetic processing corrected by the arithmetic processing correcting means; And striking force information correcting means for inputting striking force information detected by the detecting means and correcting the striking force information in accordance with the corrected hitting point position information.

Therefore, according to the fifth aspect of the present invention, since the hitting force information is corrected by the corrected hitting point position information corresponding to the tuning of the head, an accurate hitting force corresponding to the tuning of the head is obtained. Information can be obtained.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electronic percussion instrument according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an example of an embodiment of an electronic percussion instrument according to the present invention. In this electronic percussion instrument, as will be described later, a striking surface is applied to a head 12 formed of a net-like material. A hit detection device 10 provided with a head sensor 14 as a hit detection means for detecting a hit and a rim shot sensor 18 for detecting a hit on the rim 16; a head sensor 14 and a rim shot sensor 18; The analog / digital (A / D) conversion of the detection signal output from the
The A / D converter 20 input to the SP 22 and the detection signal of the head sensor 14 input from the A / D converter 20 detect the impact on the head 12 and its strength, the impact position, and the performance with the brush. At the same time, the impact on the rim 16 and its strength are detected from the detection signal of the rim shot sensor 18 input from the A / D converter 20, and a CP to be described later
A DSP 22 to be supplied to the U 24, and an output from the DSP 22 is converted into necessary performance information by a sound source IC 34 described later and supplied to the sound source IC 34, and an operator group 30 described later
That detects the operation of the device and controls the DSP 22
U24 and a read-only memory (ROM) 26 storing a program to be executed by the CPU 24 and the like.
And a random access memory (R) as a working area necessary for the CPU 24 to execute a program.
AM) 28, and a group of operators 30 including mode selection operators for setting a normal performance mode, a brush performance mode or a tuning mode as operation modes, and operators for performing tone color selection or level setting, and the like. A display device 32 for displaying the operation mode selected by the operators of the operator group 30, the timbre necessary for tone color selection, and the state of tuning in the tuning mode;
The tone generator IC 3 reads out a waveform memory 36 described later based on the performance information from the CPU and forms a digital tone signal and outputs it to a digital / analog (D / A) converter 38 described later.
4, a waveform memory 36 storing sampling waveform data for forming a tone signal, and a digital tone signal supplied from the tone generator IC 34, which is converted into an analog tone signal and output to a sound system including an amplifier and a speaker. / A converter 38. Next, a perspective view of the impact detection device 10 shown in FIG.
The configuration of the impact detection device 10 will be described with reference to a cross-sectional view taken along line II-III.

The impact detecting device 10 has a cylindrical body 50, and a screw hole (not shown) having a screw groove (not shown) formed on the outer periphery of the body 50. Engaging part 5
2 are formed in the radial direction at predetermined intervals.
The engaging portion 52 has an engaging pin 54 formed with a thread for screwing with a screw groove formed in the engaging portion 52.
Is screwed in, and the head 12 and the rim 16 are attached to the body 50 via the engagement pins 54. The engaging pin 54 has a locking projection 54 a for locking the rim 16.

Here, as shown in FIGS. 4 and 5, the head 12 forms a first net 56 and a second net 58, each of which is woven by a plain weave in which vertical and horizontal fibers are orthogonal to each other as a net-like material, to each other. The layers are laminated so that the weave directions are oblique and adhered to the frame 60. Here, the weave direction of the first net 56 and the second net 58 is oblique, as shown in FIG. 6, in which the vertical and horizontal fibers are orthogonal to each other at 90 degrees.
Means that when the first and second nets 58 and 58 are overlapped, the fibers of the adjacent first and second nets 56 and 58 intersect each other at an angle α smaller than 90 degrees. It is.

The rim 16 is formed by integrally molding a metal material, and has an edge 66 having an outer peripheral portion provided with a hole 64 through which the engaging pin 54 can penetrate, and an inner peripheral portion of the edge 66. Rim hitting portion 68 extended to the side and formed upright
It is composed of The upper part of the rim hitting portion 68 is covered with a cover member 70 formed of an elastic material such as rubber or sponge.

In order to attach the head 12 and the rim 16 having the above structure to the body 50, first, the head 1 is attached to the body 50.
2 and cover the rim 16 from above the head 12,
The position is adjusted so that the hole 64 of the rim 16 and the screw hole of the engaging portion 52 of the body 50 communicate with each other. Then, the engagement pin 54
Is inserted into the hole 64 of the rim 16 and the screw hole of the engaging portion 52 of the body 50, and the thread of the engaging pin 54 is engaged with the engaging portion 5 of the body 50.
The head 12 and the rim 16 are attached to the body 50 by the locking projections 54a of the engagement pins 54.
And press them against each other.

That is, the engaging pin 54 is connected to the engaging portion 5 of the body 50.
As the screw is screwed into the second screw hole, the edge 66 of the rim 16 is pushed downward in FIG. 3 by the locking projection 54a, and the frame 60 of the head 12 is also pushed downward via the edge 66. For this reason, the first net 56 and the second net 58 whose downward movement is restricted by the upper end 50a of the trunk 50 are stretched on the trunk 50 with a predetermined tension. Therefore,
By adjusting the amount of screwing of the engagement pin 54 into the screw hole of the engagement portion 52 of the body 50, the first net 56 and the second net 5 are adjusted.
8 can be arbitrarily controlled, whereby the head 12 can be tuned.

The head / sensor support member 7 is provided in the body 50 so as to intersect the center of the axis of the body 50.
2 are provided. The head sensor 14 is attached to the center portion of the upper surface of the head sensor supporting member 72 so as to be in contact with the second net 58 by a cushioning double-sided tape 78 described later. That is, the head sensor 14 is arranged in contact with the lower surface of the center of the net material composed of the first net 56 and the second net 58 of the head 12.

As shown in FIGS. 7A, 7B and 7C, the head sensor 14 has a disk-shaped piezoelectric element 76 having an output signal line 74, and the lower surface of the piezoelectric element 76. , A cushioning double-sided tape 78 is stuck. The diameter of the cushioning double-sided tape 78 is set so as to match the node diameter of the piezoelectric element 76.

A truncated cone-shaped cushion member 80 made of an elastic material such as rubber or sponge is attached to the upper surface of the piezoelectric element 76. Cushion member 80
Has a bottom surface formed with a diameter larger than the diameter of the piezoelectric element 76, and has a tapered shape as it goes upward, and is in contact with the second net 58 at a tip portion having a smaller diameter.

Further, the rim shot sensor 18 is adhered by a cushioning double-sided tape 78 in the vicinity of the rim hitting portion 68 at the upper inside of the body 50. The rim shot sensor 18 includes a disk-shaped piezoelectric element 76 having an output signal line 74.
6, a double-sided cushioning tape 78 is attached to the lower surface of the piezoelectric element 76.
Is set to match the node diameter of

That is, in this electronic percussion instrument, the one obtained by removing the cushion member 80 from the head sensor 14 is used as the rim shot sensor 18 to improve the efficiency of parts.

In this electronic percussion instrument apparatus, various types of heads 12 having different diameters and a body 50 adapted to the heads 12 are prepared, so that the size of the heads 12 can be appropriately changed. ing.

In the above configuration, when the head 12 is hit by a stick (not shown), the head sensor 14 detects the hit, and when the rim 16 is hit by the stick, the rim shot Sensor 1
8 detects the impact, and the brush 102
If you rub or hit the head sensor 1
4 will detect the contact of the brush 102 with the head 12.

Next, the electrical processing contents of the electronic percussion instrument will be described with reference to the attached flowchart.

FIG. 8 is a flowchart of a main routine executed by the CPU 24. When the power is turned on to the electronic percussion instrument, first, initial settings such as a memory and a register are performed (steps). S80
2).

Next, the operation state of the mode selection operators of the operator group 30 is monitored, and as an operation mode, a tuning mode for adjusting the tension of the mesh material of the head 12 to change the hit feeling of the head 12 is provided. It is determined whether the setting is set, the normal performance mode for generating a percussion instrument sound by detecting the impact on the head 12 and the impact on the rim 16 or the rubbing or hitting of the head 12 with the brush 102 is detected. It is determined whether a brush performance mode for generating percussion instrument sounds has been set (step S804).

If it is determined in step S804 that the tuning mode has been set, the DSP 22 is set to the tuning mode,
P22 is set to execute the DSP impact signal processing routine shown in FIG. 9 (step S806). then,
The tuning processing routine by the CPU 24 shown in FIG. 14 is executed (step S808), and the tuning mode of the DSP 22 is stopped (step S81).
0), and return to step S804.

If it is determined in step S804 that the normal performance mode has been set, the DS
P22 is set to the normal performance mode, and the DSP 22 is set to execute the DSP hitting signal processing routine shown in FIG. 9 (step S812). Then, C shown in FIG.
The normal performance processing routine by the PU 24 is executed (step S814), the process of stopping the normal performance mode of the DSP 22 is performed (step S816), and the process returns to step S804.

If it is determined in step S804 that the brush performance mode has been set, D
SP22 is set to the brush performance mode (step S8)
18). Then, a brush performance processing routine is executed by the CPU 24 to stop the brush performance mode of the DSP 22 (step S816), and step S804 is performed.
Return to Note that the processing in the brush performance mode is not related to the gist of the present invention, and a detailed description thereof will be omitted.

Next, a DSP striking signal processing routine executed by the DSP 22 shown in FIG. 9 will be described. This processing is based on the following characteristics.

That is, the head 1 made of a net material
Observing the detection signal of the head sensor 14 when hitting No. 2, there is a characteristic in a certain frequency band that the time of the first half-wave changes depending on the hit point position. That is, FIG.
As shown in (a) and (b), the time of the first half-wave when the center (head position A) of the head 12 is hit is defined as T _A, and the time when the outer periphery (head position C) of the head 12 is hit is hit. The time of the first half-wave is T _C, and the time of the first half-wave at the time of hitting between the center and the outer periphery of the head 12 (strike position B) is T _B.
Then, T _A > T _B > T _C holds.

As described above, when the head 12 made of a net-like material is hit, the time of the first half-wave gradually decreases as the hit point moves from the center to the outer periphery.

When the tuning of the head 12 is increased, that is, when the tension of the head 12 is increased, the times T _A , T _B , and T _{C of} the first half-wave are in a relation of “T _A > T _B > T _C ”. , And the tuning of the head 12 is lowered, that is, when the tension of the head 12 is reduced, the times T _A , T _B , and T _{C of} the first half-wave become “T _A > T _B > T _C”. Respectively, without changing the relationship.

FIG. 11 is a functional block diagram showing the structure of the head hitting position detecting means of the DSP 22. The outline of the DSP hitting signal processing routine will be described with reference to FIG. Is subjected to A / D conversion by the A / D converter 20 and input to the DC cut filter. The DC cut filter is a high-pass filter that removes a DC component,
The detection signal input to the DC cut filter is a low-pass filter whose DC component is removed and unnecessary high frequency components are removed.
Input to a pass filter (LP filter). Then, the detection signal from which unnecessary high-frequency components have been removed by the LP filter is input to the first half-wave detection circuit. The first half-wave detection circuit detects the first half-wave by detecting the rising edge of the waveform of the input detection signal and the first zero cross. The counter counts only while the first half-wave detection circuit detects the first half-wave, and the arithmetic circuit calculates the hitting position based on the count value of the counter. The hitting position calculated in this way is used as head hitting position information by the CPU.
24.

Here, the DSP striking signal processing routine will be described in detail with reference to FIG. 9. The DSP striking signal processing routine is executed repeatedly every sampling cycle of the A / D converter 12. is there.

In this DSP impact signal processing routine, first, the sampling data S is input (step S902), and it is determined whether or not the rising has been detected (step S904). If it is determined that the rising has been detected, Resets the timer T (step S90).
6), turns on the first half-wave count flag cf (ON)
Then (step S908), the maximum value detection flag mf is turned on (step S910).

Here, the rise detection in step S904 specifically determines the difference between the sampling data S and the previous sampling data, and determines that the rise has occurred when the difference is equal to or greater than a predetermined value. Or a known technique for detecting the rising edge of the input signal.

The timer T is for measuring a predetermined time for detecting the maximum value of the detection signal, and the predetermined time is determined by a register time for storing a preset time.

The first half-wave count flag cf is a flag indicating whether the count processing of the first half-wave counter ct is performed or not. When the first half-wave count flag cf is on, the count processing of the first half-wave counter ct is performed, and when the first half-wave count flag cf is off, the count processing of the first half-wave counter ct is not performed. . The maximum value detection flag mf is a flag indicating whether the maximum value detection processing of the input data is performed or not. When the maximum value detection flag mf is on, the maximum value detection process is performed, and when the maximum value detection flag mf is off, the maximum value detection process is not performed. If the process of step S910 has been completed or if it has been determined in step S904 that no rise has been detected, the process proceeds to step S912, and the first
It is determined whether the half-wave count flag is on.

Here, step S912, step S9
14, step S916 and step S918 are the first half-wave counting process. That is, the first half-wave counter ct is incremented from step S912 until the first half-wave count flag cf is turned on and the first half-wave ends.

Specifically, in step S912,
If it is determined that the first half-wave count flag is not on, that is, the first half-wave count flag is off, the process proceeds to step S920 without performing the processing of steps S914, S916, and S918. Jump.

On the other hand, if it is determined in step S912 that the first half-wave count flag is ON, it is determined whether the first half-wave is completed (step S912).
914). If it is determined that the first half-wave has not ended, the first half-wave counter ct is incremented (step S916). If it is determined that the first half-wave has ended, the first half-wave is counted. The count flag cf is turned off (step S918), and the process proceeds to step S920.

The end of the first half-wave in step S914 is the time when the sampling data S crosses 0 (zero), and it is determined whether the sampling data S crosses 0 (zero). Is 0 (zero) when the sign of the sampling data S changes.
Can be determined to have crossed.

In step S920, it is determined whether or not the maximum value detection flag mf is on. If it is determined that the maximum value detection flag mf is not on, that is, if it is determined that the maximum value detection flag mf is off, Then, the DSP impact signal processing routine is terminated.

On the other hand, if it is determined in step S920 that the maximum value detection flag mf is on, it is determined whether or not the timer T is larger than the register time (step S922).

In step S922, if the timer T is equal to or smaller than the register time, that is, the maximum value detection flag mf is turned on and the timer T
While the value is equal to or less than me, steps S924 and S9
At 26, a maximum value detection process is executed.

More specifically, the timer T is incremented (step S924), the maximum value max is compared with the absolute value of the sample data S, and the maximum value m is determined by the larger value.
ax is rewritten (step S916), and the DSP impact signal processing routine ends.

Therefore, the maximum value max is stored in the register tim
It becomes the maximum value of the impact signal within the predetermined time determined by e.

In step S922, when it is determined that the timer T is larger than the register time and the maximum value detection processing is completed, the maximum value detection flag mf is turned off (O
FF) (step S928).

Next, the first half-wave counter ct is calculated using a table 1 (table 1), which is a hitting position table for converting the first half-wave count value, which is the value of the first half-wave counter ct, into hitting position information AP. Is converted into hit point position information AP (step S930).

Here, Table 1, which is a hit point position table for converting the first half-wave count value, which is the value of the first half-wave counter ct, into hit point position information AP, corresponds to a head type and a tuning type. Is the choice.

The head type corresponds to the size of the head 12, and in this electronic percussion instrument, the tom 1 (T
OM1), tom 2 (TOM2), snare (SNARE)
Is set. The tuning type corresponds to the tuning state of the head 12, that is, the tension of the head 12, and in this electronic percussion device, the tuning type is loose, medium, and tight. : Hard) is set.

As described above, in this electronic percussion instrument apparatus, three types of heads are set,
Since three types of tuning types are set, a total of nine types of tables 1 are provided.

FIG. 12 shows the characteristics of each of the loose, medium and tight tuning types for the table 1 when the head type is a snare. Here, in FIG. 12, the hit point position A (center), the hit point position B (intermediate), and the hit point position C of the hit point position information AP.
(Outer circumference) is the hit point position A, hit point position B,
It corresponds to the hit point position C.

When the processing in step S930 is completed, the flow advances to step S932, where the hitting point is determined using a hitting force correction table K2 for converting the hitting point position information AP obtained in step S930 into a hitting force correction coefficient K. The position information AP is converted into a striking force correction coefficient K (step S932).

Here, Table 2 is a striking force correction table for converting the striking point position information AP into a striking force correction coefficient K.
Is selected according to the head type and the tuning type, as in Table 1.

As described above, in this electronic percussion instrument apparatus, tom 1, tom 2 and snare are set as head types, and loose, medium and tight are set as tuning types. This means that nine types of tables 2 are provided.

FIG. 13 shows the characteristics of each of the loose, medium and tight tuning types when the head type is snare with respect to the table 2. Here, in FIG. 13, the hit point position A (center), the hit point position B (middle), and the hit point position C of the hit point position information AP.
(Outer circumference) is the hit point position A, hit point position B,
It corresponds to the hit point position C.

For example, in the example shown in FIG. 13, when the tuning type is loose, "K = 1" is at the hit point position A (center), and "K = 4" at the hit point position B (middle).
/ 3 ", and" K = 3 "at the hit point position C (outer circumference).

The head type and the tuning type may be represented by numerical values, and the types of the tables 1 and 2 are not limited to nine.

When the process in step S932 is completed, the flow advances to step S934, in which a correction operation process for multiplying the maximum value max by the impact force correction coefficient K is performed, and corrected impact force information V is calculated.

When the processing in step S934 is completed, the flow advances to step S936 to turn on the sounding flag gf in the CPU 24, set the hitting point position information AP and the hitting force information V in the CPU 24, and execute this DSP hitting signal processing routine. To end.

Next, referring to FIG.
A tuning processing routine executed by the CPU 808 will be described.

In this tuning processing routine, first, a head type setting operator (operator for setting the head type) or a tuning type setting operator (for setting the tuning type) of the operator group 30. It is determined whether the change of the head type or the tuning type has been instructed by the operation of the operator (step S1402) (step S1402). When the power is turned on, the register head for storing the head type is set by the initialization process in step S802.
Also stores the tuning type tuni
ng is also set according to the initial setting state of the head type setting operator and the tuning type setting operator.

If it is determined in step S1402 that the operation of the head type setting operator or the tuning type setting operator of the operator group 30 has been instructed to change the head type or the tuning type, It is determined whether a change of the head type has been instructed (step S1404).

If it is determined that the change of the head type has been instructed, the storage contents of the register head are changed in accordance with the change instruction (step S140).
6).

If the process of step S1406 has been completed, or if it is determined in step S1404 that the change of the head type has not been instructed,
It is determined whether a change of the tuning type has been instructed (step S1408). Here, tuning
If it is determined that the type change has been instructed, the storage content of the register tuning is changed in accordance with the change instruction (step S1410).

When the process of step S1410 is completed, or when it is determined in step S1408 that the change of the tuning type has not been instructed, table 1 and table 2 are stored in accordance with the contents stored in register head and register tuning. It is selected and set in the DSP 22 (step S1412).

When the processing in step S1412 is completed as described above, or in step S1402, neither the head type setting operator nor the tuning type setting operator of the operator group 30 is operated, and the head If neither the type nor the tuning type has been instructed, the hit point position information AP sent from the DSP 22 is displayed on the display device 32 (step S1414). That is, the hit point position information AP set in the CPU 24 in the DSP hitting signal processing routine is displayed on the display device 32.

FIG. 15 shows an example of a display mode of the hit point position information AP on the display device 32. That is, FIG.
1A shows a first display example, and FIG.
FIG. 5B shows a second display example. FIG.
FIG. 5 (c) represents a figure showing various types of hit point position information AP displayed in the display area of the hit point position information AP in FIG. 15 (b). In FIGS. 15A and 15B, numbers assigned in advance to the respective tuning types are displayed in the tuning type display column.

The hit point position information A by the display device 32
The display mode of P is not limited to the example shown in FIG. 15, and may be displayed as a numerical value or as a bar graph such as a level display.

When the processing in step S1414 ends,
It is determined whether or not the end operator of the operator group 30 has been operated (step S1416). If it is determined that the end operator of the operator group 30 has not been operated, step S1 is performed.
Returning to step 402, the process is repeated.

On the other hand, if it is determined in step S1416 that the end operator of the operator group 30 has been operated, the process returns to the main routine.

Next, referring to FIG.
The normal performance processing routine executed by the CPU 24 in 814 will be described.

In this normal performance processing routine, first, a level operator (an operator for setting the volume of a sound to be emitted), a tone operator (an operator for setting the tone of a sound to be emitted) of the operator group 30 or It is determined whether or not the tuning operator (operator for setting the pitch of the musical sound to be pronounced) has been changed (step S1602). When the power is turned on, the register level for storing the level, the register tone for storing the timbre, and the register pitch for storing the pitch include the level control, the timbre setting control, and the tuning operation by the initialization processing in step S802. Each is set according to the initial setting state of the child.

If it is determined in step S1602 that the level operator, the tone setting operator, or the tuning operator of the operator group 30 has been changed, it is determined whether the level operator has been changed (step S1602). Step S
1604).

If it is determined that the level operator has been changed, the register level is changed according to the change.
Is changed (step S1606).

If the processing in step S1606 has been completed, or if it is determined in step S1604 that the level control has not been changed, it is determined whether or not the tone control has been changed (step S160).
8).

If it is determined that the tone control has been changed, the storage contents of the register tone are changed in accordance with the change, and the start address and end address of the waveform data corresponding to the storage contents of the register tone are changed. Is set in the sound source IC 34 (step S1610).

When the processing in step S1610 is completed, or when it is determined in step S1608 that the tone control has not been changed, it is determined whether the tuning control has been changed (step S1).
612).

If it is determined that the tuning operator has been changed, the register pi is changed in accordance with the change.
The storage content of tch is changed, and the pitch information corresponding to the storage content of the register pitch is set in the tone generator IC 34 (step S1614).

When the process of step S1614 is completed as described above, and when it is determined in step S1612 that the tuning operator has not been changed,
Alternatively, in step S1602, if none of the level operator, tone setting operator, or tuning operator of the operator group 30 of the operator group 30 has been changed, the sound generation flag gf is ON. It is determined (step S1616). Specifically, in step S936 of the DSP impact signal processing routine, the CPU
It is determined whether or not the sound generation flag gf of 24 is turned on and the sound generation is instructed.

If it is determined that the sound generation flag gf is on, the calculation result of “level × V” is set in the sound source IC 34 as level information (step S1).
618). That is, the value stored in the register level set by the level operator is multiplied by the striking force information V to calculate a sounding level, and the calculation result is set in the sound source IC 34 as level information.

When the processing in step S1618 ends,
The hit point position information AP is converted into a filter coefficient for controlling the filter characteristics and set in the sound source IC 34 (step S16).
20). That is, by converting the hit point position information AP into filter coefficients for controlling the filter characteristics and setting the same in the sound source IC 34, a tone color corresponding to the hit point position can be obtained. Note that the processing for obtaining the tone corresponding to the hit point position is not limited to the processing shown in step S1620. Instead of the processing in step S1620, the waveform to be read is switched or the mixing ratio of a plurality of waveforms is changed. You may make it.

When the processing in step S1620 ends,
Turn off the sound generation flag gf (Step S1)
622). That is, when the sound generation processing is completed as described above, the sound generation flag is turned off.

When the processing in step S1622 is completed, or when it is determined in step S1616 that the sound generation flag gf is off, it is determined whether or not the end operator of the operator group 30 has been operated (step S1616). S162
4) If it is determined that the end operator of the operator group 30 has not been operated, the process returns to step S1602 to repeat the processing.

On the other hand, if it is determined in step S1624 that the end operator of the operator group 30 has been operated, the process returns to the main routine.

The process of emitting a musical tone from the electronic percussion instrument to the outside is performed under the control of the tone generator IC34.

In the above embodiment, the hit point position information AP is displayed on the display device 32. Alternatively, a sound signal having a pitch corresponding to the hit point position information AP may be generated. .

[0102]

Since the present invention is configured as described above, a display corresponding to the hit position of the head is performed, so that accurate tuning can be easily performed when tuning the head. It has an excellent effect.

Further, the present invention has an excellent effect that the impact position can be accurately detected because the change in the head tension due to the head tuning is corrected.

Further, according to the present invention, since the difference in the sensitivity of the impact detection due to the difference in the impact position on the head is corrected, an excellent effect that an accurate impact force can be detected can be obtained. Further, the present invention corrects a change in head tension due to tuning of the head and corrects a difference in sensitivity of hit detection due to a difference in hit position to the head, so that accurate hitting force can be detected. It has an excellent effect.

[Brief description of the drawings]

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

FIG. 2 is a perspective view of the impact detection device.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a perspective view of a head.

FIG. 5 is an exploded perspective view of a head.

FIG. 6 is an explanatory diagram showing a case where the texture directions of the first net and the second net are oblique.

7A and 7B are explanatory views of a head sensor, wherein FIG. 7A is a view as viewed from an arrow A in FIG. 7B, FIG. 7B is a front view, and FIG. 7C is a view as viewed from an arrow C in FIG.

FIG. 8 is a flowchart of a main routine executed by a CPU.

FIG. 9 is a flowchart of a DSP impact signal processing routine executed by the DSP.

10A and 10B are explanatory diagrams of characteristics of a head formed of a net material, and FIG. 10A illustrates a hit point position on the head;
(B) shows an output waveform.

FIG. 11 is a functional block diagram showing a configuration of a head hitting position detecting means of the DSP in a normal performance mode.

FIG. 12 is an explanatory diagram showing characteristics of a table 1.

FIG. 13 is an explanatory diagram showing characteristics of a table 2.

FIG. 14 is a flowchart of a tuning process routine executed by the CPU.

FIGS. 15A and 15B are explanatory diagrams showing examples of a display mode of the hit point position information AP on the display device, wherein FIG. 15A shows a first display example, FIG. 15B shows a second display example, and FIG. (B) represents various figures showing the various hitting point position information AP displayed in the display area of the hitting point position information AP.

FIG. 16 is a flowchart of a normal performance processing routine executed by the CPU.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Impact detection device 12 Head 14 Head sensor 16 Rim 18 Rim shot sensor 20 A / D converter 22 DSP 26 ROM 28 RAM 30 Operator group 32 Display device 34 Sound source IC 36 Waveform memory 38 D / A converter 50 Body 52 Engagement part 54 Engagement pin 56 First net 58 Second net 60 Frame 64 Hole 66 Edge 68 Rim hitting part 70 Cover member 72 Head / sensor support member 74 Output signal line 76 Piezoelectric element 78 Cushion Double Sided Tape 80 Cushion Member

Claims (5)

[Claims] 1. An electronic percussion instrument device for detecting a strike as an electric signal and generating a musical tone based on the detected electric signal, comprising: a head capable of tuning a strike surface for performing a strike; A hit detecting means for detecting as a signal; an electric signal detected by the hit detecting means; a hitting position detecting means for performing arithmetic processing by detecting the hitting position information; and a hitting point detected by the hitting position detecting means. An electronic percussion instrument device comprising: display means for performing display corresponding to position information. 2. The electronic percussion instrument according to claim 1, further comprising: an arithmetic processing correcting means for correcting an arithmetic processing in said hit point position detecting means in accordance with a tuning state of said head. apparatus. 3. An electronic percussion instrument device for detecting a strike as an electric signal and generating a musical tone based on the detected electric signal, comprising: a head capable of tuning a strike surface for performing a strike; A hit detecting means for detecting as a signal, an electric signal detected by the hit detecting means is input, and arithmetic processing is performed, and a hit point position detecting means for detecting hit point position information; and an arithmetic processing in the hit point detecting means, An electronic percussion instrument device, comprising: an arithmetic processing correction unit that corrects according to the tuning state of the head. 4. An electronic percussion instrument device for detecting a strike as an electric signal and generating a musical tone based on the detected electric signal, a head for performing a strike, a strike located at the center of the head, and striking the head. As an electric signal, an electric signal detected by the impact detecting means is inputted, arithmetic processing is performed, an impact force detecting means for detecting impact information, and the impact detecting means are detected. An electric signal is input, arithmetic processing is performed, a hit point position detecting means for detecting hit point position information, and a hitting force information detected by the hitting force detecting means and a hitting point position information detected by the hitting point position detecting means. An electronic percussion instrument device comprising: a percussion force information correcting means for inputting and correcting percussion force information in accordance with percussion point position information. 5. An electronic percussion instrument device for detecting a strike as an electric signal and generating a musical tone based on the detected electric signal, comprising: a head capable of tuning a strike surface for performing a strike; A striking detecting means for detecting striking on the head as an electric signal; a striking force detecting means for inputting the electric signal detected by the striking detecting means, performing arithmetic processing, and detecting striking force information; A hit point position detecting means for inputting an electric signal detected by the detecting means and performing hit processing to detect hit point position information; and correcting the hitting position detecting means in accordance with a tuning state of the head. Arithmetic processing correcting means; and a corrected hitting point position detected by the hitting point position detecting means for performing the arithmetic processing corrected by the arithmetic processing correcting means. An electronic percussion instrument device, comprising: a striking force information correcting means for inputting position information and striking force information detected by the striking force detecting means, and correcting the striking force information in accordance with the corrected hitting point position information. .