JP3119272B2 - Electronic musical instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument, and more particularly to an electronic musical instrument that controls the characteristics of the musical tone by the position and movement of a joint when the musical tone is generated in response to the operation of a performance operator such as a keyboard. .

[0002]

2. Description of the Related Art Conventionally, for example, in a normal keyboard instrument, characteristics of a musical tone (key on / off, volume, touch, modulation, effect, pitch bend, etc.) are controlled by a wheel, a bender, etc. in addition to a keyboard. However, since at least one hand is used to operate an operator such as a wheel, there is a problem that the keyboard cannot be played with both hands. Therefore, a technique of detecting the muscle voltage of the shoulder or the foot and controlling the characteristics of the musical tone based on the detected voltage has been proposed (Japanese Patent Publication No. 54-36846).

[0003]

However, in order to control various tone characteristics with muscle voltage, it is necessary to play unnaturally while exerting force on the shoulder and the like, and there is a problem that it is very difficult to play. .

An object of the present invention is to provide an electronic musical instrument capable of controlling a characteristic of a musical tone while performing a natural performance operation in view of the above-mentioned problems in the conventional example.

[0005]

[0006]

Means for Solving the Problems To achieve the above object,
Therefore, the electronic musical instrument according to the present invention has a joint information detecting means for detecting positions and movements of joints ahead of the wrist, including the wrist of the player, in substantially the same direction as the key operation direction and sequentially outputting joint information. A performance information input means for inputting performance information based on performance operations on these keys, and generating musical tones in accordance with the performance information input by the performance information input means. And a tone signal forming means for controlling the characteristics of the tone based on the joint information output from the joint information detecting means.

[0007]

The performance information can be input by the performance information input means having a plurality of keys to perform the performance. At the same time, to give a to detect the position and movement of the joints of the player's joint information, to the joint information
Based on this , the characteristics of the musical sound can be controlled.

[0008] In addition, performance information is input with fingers of a hand to perform a performance, and at the same time, the position and movement of a joint ahead of the wrist including the wrist are detected to obtain joint information. Characteristics can be controlled.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a block configuration of an electronic musical instrument according to one embodiment of the present invention. The electronic musical instrument of this embodiment includes a keyboard 1 for inputting performance information, a detection circuit 2 for detecting on / off of a key of the keyboard, a channel assignment based on a detection result of the detection circuit 2, and a key-on signal KON or a key code. Key assigner 3 for generating KC, etc., key assigner 3
4 that generates a tone signal based on a signal from the
Digital / analog (D / A) converter 5 for converting a tone signal (digital data) from
And a sound system 6 for producing a musical tone based on an analog musical tone signal from the D / A converter 5.

Also, sensors SN1, SN2, S (not shown)
The analog signal from N3 is converted into digital data S1, S
Analog / digital (A
/ D) It includes converters 7, 8, and 9, a control circuit 10, a parameter setting circuit 11, and a gate 12. The sensor S1 is a sensor for detecting the vertical displacement of the wrist, the sensor S2 is a sensor for detecting the horizontal displacement of the wrist, and the sensor S3 is a sensor for detecting the displacement of the third joint of the finger. Control circuit 10
Are output signals S1, S2, S of the A / D converters 7, 8, 9
3, a parameter ΔTC for controlling the cutoff frequency of the low-pass filter (LPF) of the sound source 4, a parameter ΔPITCH for controlling the pitch shift of the musical tone, and a parameter ΔVOL for adjusting the volume (volume) are created. Parameter ΔT for controlling the characteristics of these musical tones
C, ΔPITCH and ΔVOL are input to the sound source 4 through the gate 12. The parameter setting circuit 11 is a circuit for setting parameters such as various weights when the control circuit 10 creates parameters.

Further, this electronic musical instrument has a selection circuit 13, inverters 14, 18, AND circuits 15, 16, 19, 2
0, and OR circuits 17 and 21 are provided. The selection circuit 13 controls whether the tone characteristic is controlled during key-on or whether the characteristic is controlled with respect to the tone of the decay section after key-off.
Alternatively, it is possible to select whether to control the tone characteristics at all times as long as the tone is being produced. When the control of the tone characteristics is selected during key-on, the key-on selection signal SKON becomes "1". When it is selected to control the characteristics of the tone after the key-off, the key-off selection signal SKOF becomes "1". To always control the tone characteristics, the signals SKON, S
Both KOFs are “1”.

The AND circuit 15 has a key-on selection signal SK.
Input ON and key-on signal KON. Therefore, when the key-on selection signal SKON is “1” and any key is turned on, the AND circuit 15 outputs “1”,
The EN terminal of the gate 12 becomes “1” via the R circuit 17. As a result, the gate 12 opens, and various characteristic control parameters from the control circuit 10 are transmitted to the sound source 4. Then, the characteristic of the musical tone that is keyed on and is sounded is controlled.

The AND circuit 16 generates a key-off selection signal SK
OF and a signal obtained by inverting the key-on signal KON by the inverter 14 are input. Therefore, the key-off selection signal S
When KOF is “1” and one of the keys is turned off, the AND circuit 16 outputs “1”, and the EN terminal of the gate 12 becomes “1” via the OR circuit 17. This allows
The gate 12 opens, and various characteristic control parameters from the control circuit 10 are sent to the sound source 4. Then, the characteristic of the tone which is keyed off and is sounded in the decay section is controlled.

An inverter 18, AND circuits 19 and 20,
And the block A including the OR circuit 21 generates the latch signal Q as shown in Table 1.

[0016]

[Table 1] The latch signal Q determines the timing at which the control circuit 10 stores the values of the sensors SN1, SN2, and SN3 mounted on the wrists and joints. The stored value is used as reference data for obtaining a difference as described later. From Table 1, when the key-on selection signal SKON is "1", the latch signal Q rises when the key-on signal KON rises from "0" to "1", that is, when the keyboard key is depressed, and at that time the reference data is It is memorized. When the key-on selection signal SKON is “0” and the key-off selection signal SKOF is “1”, the key-on signal KON changes from “1” to “0”.
, That is, when the keyboard key is released, the latch signal Q also rises, and the reference data is stored at that time. When the key-on selection signal SKON and the key-off selection signal SKOF are both "0", no characteristic control is performed, so the latch signal Q is "0".

FIG. 2 shows details of the control circuit 10. The control circuit 10 processes the signal S1 indicating the vertical movement of the wrist 3
1. The processing unit 32 of the signal S2 indicating the lateral movement of the wrist, the processing unit 33 of the signal S3 indicating the movement of the third joint of the finger, the multiplier groups 34, 35, 36, and the adders 37, 38, 39 Prepare. Since the processing units 32 and 33 have the same configuration as the processing unit 31, only the processing unit 31 will be described and the description of the processing units 32 and 33 will be omitted. Similarly, since the multiplier groups 35 and 36 and the adders 38 and 39 have the same configuration as the multiplier group 34 and the adder 37, only the multiplier group 34 and the adder 37 will be described.

In the processing section 31, the signal S1 indicating the vertical movement of the wrist is stored in the latch 41 at the timing of the rise of the latch signal Q from the block A in FIG.
As described above, since the latch signal Q rises at the timing of key-on or key-off, the absolute vertical displacement of the wrist at that time is stored as a reference. The signal S1 indicating the vertical displacement of the wrist is input to the comparator 42.
The data stored in the latch 41 is also input to the comparator 42,
The comparator 42 calculates the difference between the signal S1 indicating the absolute vertical displacement of the wrist thereafter and the reference data stored in the latch 41. The calculated difference data is input to the dead zone conversion table 43.

The dead zone conversion table 43 is a table for eliminating, when the difference data has a size larger than a predetermined value, the difference data. The output of the dead zone conversion table 43 is
The data indicates the relative vertical displacement of the wrist. The data indicating the vertical relative displacement of the wrist is stored in the multiplier group 34 as 1
Input to two multipliers. The data indicating the relative vertical displacement of the wrist is input to the differentiating circuit 44. The differentiating circuit 44 differentiates the input data and outputs data indicating the relative vertical speed of the wrist. The data indicating the vertical relative speed of the wrist is input to one multiplier of the multiplier group 34. The data indicating the vertical relative speed of the wrist is input to the differentiating circuit 45. The differentiating circuit 45 differentiates the input data and outputs data indicating the relative vertical acceleration of the wrist. The data indicating the vertical relative acceleration of the wrist is input to one multiplier of the multiplier group 34.

Similarly, the signal S1 itself indicating the vertical displacement of the wrist instead of the difference, that is, the signal S1 indicating the absolute vertical displacement of the wrist, is input to one multiplier of the multiplier group 34. The signal S1 indicating the absolute vertical displacement of the wrist is input to the differentiating circuit 46. The differentiating circuit 46 differentiates the input data and outputs a signal indicating the absolute vertical speed of the wrist.
The signal indicating the absolute vertical speed of the wrist is the multiplier group 34.
To one of the multipliers. A signal indicating the absolute vertical speed of the wrist is output to the differentiating circuit 47. Differentiator 4
Numeral 7 differentiates the input data and outputs data indicating the absolute vertical acceleration of the wrist. The data indicating the vertical relative acceleration of the wrist is input to one multiplier of the multiplier group 34.

Further, since similar data is output from the processing units 32 and 33, the multiplier group 34 also inputs these data. Then, parameters P1-1 to P1-18, which are multipliers of the respective multipliers, are input to the multiplier group 34. These parameters P1-1 to P1-18 are shown in FIG.
Can be set by the parameter setting circuit 11. The result of the multiplication by the multiplier group 34 is added by the adder 37 to output a parameter ΔTC. Other adders 38 and 39
Similarly, the parameters ΔPITCH, ΔVO
L is output.

Table 2 is an example of parameter setting by the parameter setting circuit 11.

[0023]

[Table 2] “Absolute” indicates data indicating absolute displacement, speed, and acceleration, and “phase” indicates data indicating relative displacement, speed, and acceleration. The position of the blank is “0”.

FIG. 3 shows an example of the mounting position of the sensor. In FIG. 3A, a sensor 51 is attached to the back of the hand to detect the vertical displacement of the wrist. FIG. 3A shows a state immediately after a keyboard key is depressed, and FIG. 3B shows a state in which the wrist is moved vertically from there. In FIG. 3C, a sensor 52 is attached to the side of the hand to detect the lateral displacement of the wrist. FIG. 3D shows the state immediately after the keyboard key is pressed.
Indicates a state in which the wrist is moved sideways from there. FIG.
In (e), a sensor 53 is mounted on the third joint of the finger to detect the displacement of the third joint. FIG. 3E shows a state immediately after the keyboard key is depressed, and FIG. 3F shows a state in which the wrist is moved laterally from there.

According to the above-described embodiment, the sensor is mounted at a position such as the wrist or the finger which can be easily moved during the performance of the keyboard, so that the characteristics of the musical sound can be controlled while performing the natural performance operation. Can be.

The tone characteristics to be controlled are not limited to the above-mentioned tone color, volume and pitch, but may be, for example, control of vibrato depth and speed, control of tremolo speed, and the like. The finger joint is not limited to the third joint, but may be the first and second joints.

[0027]

As described above, according to the present invention, since the position and movement of the body are detected and the tone characteristics are controlled in accordance therewith, a natural playing operation can be performed. Also,
In particular, if the positions and movements of the joints at and before the wrist including the wrist operated by the performance operator are detected, the tone characteristic control can be performed strictly and easily.

[Brief description of the drawings]

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

FIG. 2 is a configuration diagram of a control circuit of the electronic musical instrument of FIG.

FIG. 3 shows an example of a mounting position of a sensor.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... keyboard, 2 ... detection circuit, 3 ... key assigner, 4 ... sound source, 5 ... digital / analog converter, 6 ... sound system, 7, 8, 9 ... analog / digital converter, 1
0: control circuit, 11: parameter setting circuit, 12: gate 12, S1, S2, S3: sensor, 13: selection circuit,
14 ... inverter, 15, 16, 19, 20 ... AND circuit, 17, 21 ... OR circuit.

Continuation of the front page (56) References JP-A-1-291295 (JP, A) JP-A-3-288896 (JP, A) JP-A-63-132634 (JP, A) JP-A-3-8399 (JP) , U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G10H 1/00 G10H 1/053

Claims (1)

(57) [Claims] 1. Joint information detecting means for detecting positions and movements of a joint ahead of a wrist, including a wrist of a player, in a direction substantially the same as a key operation direction and sequentially outputting joint information; A performance information input means for inputting performance information based on performance operations on the keys; generating musical sounds in accordance with the performance information input by the performance information input means; An electronic musical instrument comprising: tone signal forming means for controlling characteristics of the tone based on joint information output from the detecting means.