JPH09127937A - Musical sound parameter control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device capable of musical expression by controlling not only tempo but also timbre and sound length. SOLUTION: The detected value of an oscillation sensor 2 provided on an oscillating operating element 1 is outputted to a characteristic extracting means 3. The characteristic extracting means 3 extracts the change of the detected value, or the characteristic of the output waveform of the oscillation sensor 2. On the other hand, a playing means 4 outputs a musical sound parameter. A musical sound parameter control means 5 controls the input musical sound parameter from the playing means by the characteristic of the input waveform from the characteristic extracting means. For example, the sharpness of peak of the oscillating speed is used to control the starting speed of sound or the sounding time, the starting of sound is delayed, or the sounding time of musical note is extended, when the oscillating operating element 1 is smoothly oscillated, so that a legato play can be performed, and the starting of sound is hastened, or the sounding time of the musical note is shortened, when the oscillating operating element 1 is clearly and vigorously oscillated, so that a staccato play can be performed. Thus, a musical expression matched to the mode of the oscillating operation can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical tone related to a volume, a tone color, a tone length, etc. based on the swing of a swing operator such as a baton or a hand gesture controller or the output of a sensor provided on the swing operator. The present invention relates to a tone parameter controller for controlling parameters.

[0002]

2. Description of the Related Art As a device for controlling a performance by a swinging operation of an operator, various devices for controlling the tempo of an automatic performance by swinging a swinging operator such as Japanese Patent Publication No. 3-60119 are proposed. Has been done.

[0003]

However, there has not been proposed a device capable of controlling the volume, tone color, tone length, etc. according to the mode of the rocking operation. In particular, it has been impossible to control the tempo of the performance by a swinging operation such as a hand gesture while controlling or controlling the tempo of the performance in the manner of the swinging operation, that is, in a natural operation, such as the volume, tone color, and tone length. Therefore, even if the operator tries to perform musical expression while controlling the tempo, this cannot be sufficiently reflected in the performance.

It is an object of the present invention to provide a parameter control device capable of musical expression by controlling not only the tempo using the swinging operator but also the volume, tone color, tone length and the like.

[0005]

The invention according to claim 1 of the present application is characterized in that the performance means for outputting a tone parameter, a swing operator having a swing sensor, and the output waveform of the swing sensor are characterized. The present invention is characterized by comprising a feature extracting means for extracting and a tone parameter controlling means for controlling the tone parameters based on the features extracted by the feature extracting means.

FIG. 1 is a diagram showing the configuration of the invention of claim 1. A swing sensor 2 is provided on the swing operator 1.
As the swing sensor 2, an angular velocity sensor that detects a swing angular velocity or an acceleration sensor that detects a swing acceleration can be used. The detection value of the swing sensor 2 is the feature extraction means 3
Is output to The feature extracting means 3 extracts the change in the detected value, that is, the feature of the output waveform of the swing sensor 2. The shape feature is, for example, a Q value of a peak (a value indicating the sharpness of the peak), a derivative of a waveform, a second derivative, an integral, and the like. On the other hand, the playing means 4 outputs musical tone parameters. The tone parameters include the tone envelope, filter characteristics,
It includes the amount of modulation such as vibrato and the sounding time (gate time). The tone parameter control means 5
The tone parameters input from the playing means are controlled and output by the characteristics of the waveform input from the feature extracting means.

For example, since the Q value of the peak and the peak value of the differential correlate with the sharpness of the rocking motion, the rocking manipulator 1 can be made smooth by using the Q value and the peak value of the differentiation for controlling the rising speed and sounding time of the sound. When swayed, the Q value and peak value become smaller, and it is possible to delay the rising of the sound and prolong the sounding time of the note for a gentle and relaxed legato performance. Since the Q value and the peak value become large when the sound is sharply shook, it is possible to speed up the rising of the sound and shorten the sounding time of the note to make the performance stiff and crisp staccato. As described above, by appropriately assigning the characteristics of the waveform to the control of the musical tone parameter, it is possible to perform a musical expression that matches the mode of the rocking operation. It should be noted that this rocking operation may also serve as a rocking operation for instructing the tempo, or may be a rocking operation only for musical expression different from the tempo instruction.

According to a second aspect of the present application, automatic performance means for sequentially reading automatic performance data including tone parameters, a swing operator having a swing sensor, and a beat timing based on an output waveform of the swing sensor. A beat timing detecting means for detecting a beat timing, a feature extracting means for extracting a feature of an output waveform of the swing sensor, and a tempo for controlling a tempo for reading out the automatic performance data based on the beat timing detected by the beat timing detecting means. The present invention is characterized by comprising control means and musical tone parameter control means for controlling the musical tone parameters based on the characteristics extracted by the characteristic extracting means.

FIG. 2 is a diagram showing the configuration of the invention of claim 2. In the figure, parts having the same configurations as those of the inventions of claims 1 and 2 shown in FIG. In the present invention, the detection value of the rocking sensor 2 of the rocking operator 1 is output to the beat timing detecting means 6 as well as the feature extracting means 3. The beat timing detection means 6 detects the beat timing indicated by the output waveform of the swing sensor 2. The beat timing is indicated by, for example, a turning point in the swing direction or a peak of the swing speed. When the beat timing detection means 6 detects the beat timing, it notifies the tempo control means 7 of the fact. The tempo control means 7 controls the read tempo of the automatic performance means 8 according to the beat timing instruction. The tone parameters read by the automatic performance means 8 are input to the tone parameter control means 5 and controlled based on the characteristics of the output waveform of the swing sensor 2. As a result, the tempo of the automatic performance can be controlled by swinging the swing operator 1, and the musical expression can also be controlled by this swing, and automatic performance control similar to the conductor's command is possible. Becomes

According to a third aspect of the present invention, automatic performance means for sequentially reading automatic performance data including tone parameters, a swing operator having a swing sensor and a grip sensor, and an output of the swing sensor. Based on the output value of the grip portion sensor, beat timing detection means for detecting the beat timing from the waveform, tempo control means for controlling the read tempo of the automatic performance data based on the beat timing detected by the beat timing detection means. And a musical tone parameter control means for controlling the musical tone parameter.

FIG. 3 is a diagram showing the configuration of the invention of claim 3. In the present invention, the swing operator 1 is provided with the grip sensor 9 in addition to the swing sensor 2. The grip sensor 9 is, for example, a pressure sensor that is built in a portion where the operator grips the rocking operator 1 and that detects a gripping force, or a variable resistor that is operated by a finger of the hand that grips the rocking operator 1. You can use it. The output of the grip sensor 9 is input to the musical tone parameter controller 5. On the other hand, the detection value of the swing sensor 2 is output to the beat timing detection means 6. The beat timing detection means 6 detects the beat timing from the output waveform of the swing sensor 2 and transmits the fact to the tempo control means 7. The tempo control means 7 controls the read tempo of the automatic performance means 8 according to the beat timing instruction. The musical tone parameters read by the automatic performance means 8 are input to the musical tone parameter control means 5. Then, this tone parameter is controlled based on the output of the grip sensor 9. Thus, the tempo control of the automatic performance can be performed by swinging the swing operator 1, and the tone parameter can be controlled by the hand holding the swing operator 1.

Further, it is also possible to control a plurality of parameters by the pressure of each finger of the hand holding the swing operation element 1. For example, the pressure of the middle finger controls the amount of modulation to control the depth of the vibrato, and the pressure of the ring finger changes the filter cutoff frequency to control the timbre. By doing so, it is possible to deeply apply vibrato and increase the harmonics of the musical sound by firmly grasping the swing operation element 1.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 4 is a block diagram of an automatic performance control system according to an embodiment of the present invention. This automatic performance control system includes a baton 20 and a baton 2 which are swing operators.
Based on the performance information input from the microcomputer 21 that analyzes the oscillating waveform of 0, the automatic performance device 22 that automatically performs the performance based on the peak type data that is the beat timing signal that is input from the microcomputer 21, and the performance information that is input from the automatic performance device 22. A tone generator circuit 23 for generating musical tones, and a D / A converter 2 for converting a digital tone signal generated by the tone generator circuit 23 into an analog signal.
4 and a sound system 25 that amplifies and outputs the analog musical tone signal output from the D / A converter 24.

The baton 20 incorporates a plurality of angular velocity sensors and / or acceleration sensors oriented in different directions (X direction and Y direction), respectively, and detects the plurality of angular velocity sensors and / or acceleration sensors. The value calculates the swing direction of the baton 20 and its angular velocity and / or velocity. The speed is obtained by integrating the detection value of the acceleration sensor. "Angular velocity and /
Alternatively, “speed” is omitted and is called “speed”. The microcomputer 21 calculates the direction and speed of this swing.
The swinging operator is not limited to the baton,
It may be a grip type controller or a device directly attached to the hand.

The microcomputer 21 calculates the swing direction and speed of the baton 20, and analyzes the swing waveform of the baton 20 to determine the beat timing, beat type, peak level, and legato coefficient. The beat timing and beat type data are output to the automatic performance device 22 and used for tempo control for reading the automatic performance data. The peak level data is output to the automatic performance device 22 and used to correct the velocity (parameter for controlling the volume). Further, the legato coefficient is determined by the automatic performance device 22 and the tone generator circuit 2.
3 is used for controlling parameters such as gate time, modulation such as vibrato, parameters for controlling sound generation time, envelope, and the like.

Here, FIG. 7 is a diagram showing changes in the absolute velocity v of the baton 20 in each case when conducting three beats with different expressions as shown in FIGS. 8 (A) to (C). is there. FIG. 8A shows a conductor pattern expressing non-legato (without connecting sounds). In this case, FIG.
Shows a change in speed as indicated by a curve a. FIG. 8B shows a conductor pattern that expresses legato (smoothly connecting sounds), and in this case, shows a velocity change like a curve b in FIG. 7. Further, FIG. 8C shows a command pattern expressing staccato (cutting the sound short), and in this case, a velocity change like a curve c in FIG. 7 is shown.

In the case of the staccato of FIG. 8C, since each beat is instructed by a sharp and sharp motion, the acceleration / deceleration of the swing is large and the maximum value of the speed ( The peak) is also large. Therefore, Q, which is a value indicating the shape of the peak, that is, the sharpness, also increases. Further, the rocking surely stops at the beat point (beat timing), and the time of the absolute velocity v = 0 or v≈0 continues for a long time.

In the case of legato, the operation is smooth and slow as shown in FIG. 8 (B). Therefore, the motion in the vertical direction is stopped at each beat point (the detection value of the Y-direction sensor ≈0), but is oscillating in the horizontal direction (the detection value of the X-direction sensor ≠ 0), and the absolute velocity v ≠ 0. As described above, in the legato, the maximum value of the absolute velocity v is small, the peak shape is dull, and the Q is low because the swing of the baton 20 is hardly stopped.

Further, in the case of non-legato, as shown by the curve a in FIG. 7, a characteristic intermediate between staccato and legato is shown.

As described above, when the sound of the baton 20 is smoothly connected or cut by the swing of the baton 20, that is, when the degree of the legato is instructed, the feature is that the peak shape of the swing and the beat point. It can be seen that it appears in the degree of stop (time when the absolute speed v = 0). Therefore, in this embodiment, the legato coefficient leg indicating the degree of legato is calculated based on the value Q indicating the peak shape (peak sharpness).

[0021]

(Equation 1)

The w used in the above calculation is the time when the peak is detected and 1 / √ of the peak value peak immediately before the peak.
The value of 2 is the time width of the detected time. It can be said that the shorter this is, the sharper the peak shape is. The original Q
Is the peak / √2 time immediately before the peak and peak /
The peak is divided by the time width of √2, but in this embodiment, the above w is used to immediately calculate Q and the legato coefficient leg when the peak is detected, and w is doubled. The peak value peak is divided by the calculated value to obtain Q. The original Q may be obtained to obtain the legato coefficient leg.

Further, Qmax of the above-mentioned operation command is the value of Q when the command rod 20 is swung in the most staccato manner, and Qmax
min is Q when swinging the baton 20 to the most legato
Is the value of These Qmax and Qmin may be stored in advance in the microcomputer 21 as fixed values. Before the operator actually conducts the command, the command mode of his or her maximum staccato or maximum legato is controlled by the command rod 20. You may make it input using it.

The method of obtaining the legato coefficient leg using Q is not limited to the above equation (2). Further, the legato coefficient leg may be obtained based on the differential value of the velocity waveform such as the time differential value immediately before the peak of the absolute velocity v, its second derivative value, integral value, etc. other than the method using Q. , The dynamic threshold value (moving average value of speed) and the peak value peak may be used for the calculation. Also, the absolute speed v ≒
You may make it calculate | require based on the shape of the area of 0. This legato coefficient leg is peak-wise (or absolute velocity v ≒
Although it can be obtained for each section of 0), the value may be used as it is for the following control, or a plurality of previous legato coefficients leg and a moving average obtained and stabilized may be used for the control.

In the above description, the velocity v is described as an absolute velocity, but the same applies when the velocity v is calculated as an angular velocity.

When the legato coefficient leg calculated for each peak is used to control the musical expression of automatic performance, it may be used to control the depth of modulation such as vibrato, and the rise and fall of the sound can be controlled. The EG characteristic may be controlled by increasing the speed during staccato, or the tone color may be controlled by decreasing the cutoff of the filter during legato. Further, the length of the musical sound may be controlled by multiplying the gate time. Here, the gate time refers to the length of time during which a musical tone is actually playing among the lengths (step times) of the notational notes such as quarter notes and eighth notes, which is usually the step time. 80 percent ~
90 percent. When it approaches 100 percent (sometimes it exceeds 100 percent) it becomes legato, and when it gets smaller it becomes staccato.

As an example of this calculation, modified gate time = original gate time × ((leg / 127) +0.1
5) and so on. The legato coefficient leg takes a value of 0 to 127. In addition, “0.
“15” is a predetermined offset value. However, the calculation formula is not limited to this.

9 and 10 are flowcharts showing the operation of the microcomputer 21. FIG. 9 is a process for capturing the output of the sensor incorporated in the baton 20 and detecting the peak. This processing operation is executed by a periodic timer interrupt operation. The timer interrupt is executed, for example, every 10 ms. First, the outputs of the sensors provided in the X and Y directions are fetched (s1). Absolute velocity or absolute angular velocity data is obtained based on the captured sensor output value (s2). When the baton 20 is provided with an acceleration sensor, the detected values are integrated to obtain velocity components in the X and Y directions, and these are combined (√ (X ² + Y ² )) to obtain the absolute velocity. Ask for. On the other hand, when the baton 20 is provided with the angular velocity sensor, the absolute angular velocity in the swing direction is obtained by combining the angular velocity in the X direction and the angular velocity in the Y direction. The obtained absolute velocity or absolute angular velocity in the swing direction is stored together with the time at that time (s3). A peak is determined based on a plurality of absolute velocities or absolute angular velocities stored in time series (s4). The peak is judged when the absolute velocity or absolute angular velocity value rises and then falls.
The maximum value of the boundary between the ascending section and the descending section is determined as the peak. Whether or not the peak is detected is determined in s5, and when the peak is not detected, the operation is finished as it is. When a peak is detected, peak type determination processing is executed (s6). The peak type determination process is a process of determining what beat and what beat the peak is heading for.

The flow chart of FIG. 10A is a detailed diagram of the above-mentioned peak type determination processing operation. First, s20, s
The swing angle is determined at 21. The swing angle is shown in Figure (B).
As shown in, it is calculated by the combination of the output value of the X-direction sensor and the output value of the Y-direction sensor. Note that this flowchart corresponds to the command of three beats or two beats (four beats) shown in FIG. Swing angle is 180 °
If it is larger than 300 ° and is less than 300 °, s22 is determined in s20.
Proceed to. In s22, it is assumed that the current peak is the first beat, and peak type data = 1 is set. After this, proceed to s25. When the swing angle is 60 ° or less or larger than 300 ° (s21), the peak of this time is the second beat, and peak type data = 2 is set (s2).
3). Thereafter, the flow advances to s25. On the other hand, if the swing angle of this time is other than the above, that is, if it is larger than 60 ° and equal to or smaller than 180 °, it is determined that the current peak is the third beat, and peak type data = 3 is set (s24). After this s25
Proceed to. In s25, the peak type data and the peak value peak at that time are output and the process returns.

Returning to FIG. 9, the stored absolute velocity or absolute angular velocity is searched for the time when the value of 1 / √2 of the peak value peak is detected, traced back from the time when the peak is detected. The peak width w, which is the time width between the time and the time when the peak is detected, is obtained (s7). Q is calculated based on the peak values peak and w (s8). Then, the legato coefficient leg is calculated based on Q (s9) and output to the automatic performance device 22 and the tone generator circuit 23. This w, Q, legato coefficient
The method of calculating the leg is as described in detail in the description of FIGS.

As shown in FIGS. 7 and 8, when the conductor rod 20 is actually swung to conduct a command, the velocity v may be 0 at the beat timing (particularly the first beat). In order to accurately detect the beat timing, the peak detection and the beat timing detection may be separately performed in the sensor output process (FIG. 9). For example, the speed in the Y direction Vy≈
For example, 0 timing is used for beat timing.

FIG. 5 is a block diagram of the automatic performance device 22. The performance data memory 31 stores automatic performance data of music. The automatic performance data includes the parameter set (note on, note number, velocity, gate time) related to the sound to be generated, event data consisting of beat events indicating each beat position and its beat type, and the time interval between adjacent event data. It consists of the sequence of timing data shown. The automatic performance data stored in the performance data memory 31 is sequentially read by the reading circuit 32. The automatic performance data read timing of the read circuit 32 is the tempo control circuit 30.
Is controlled by The tempo control circuit 30 controls the read timing and tempo according to the peak type data of the rocking speed received from the microcomputer 21. That is, when the input of peak type data is slower than the reading of beat event data, the reading is temporarily stopped and the beat timing is adjusted, and when the input of peak type data is faster than the reading of the beat event and the data, The timing is adjusted by immediately reading the next data. Then, the read tempo is adjusted according to the input interval of the peak type data. Further, if the type of beat event data to be read next (first beat, second beat, etc.) and the input peak type data are different, the reading is stopped. As a result, the reading of the automatic performance data follows the swing operation of the baton 20.

The read circuit 32 is used for the performance data memory 3
The automatic performance data is sequentially read from 1, but when the event data is read, a parameter including note-on is output to the tone generator circuit 23 via the volume adjusting circuit 34. After that, the time indicated by the gate time is counted, and when the time is counted up, note-off is output to the sound source circuit 23. The gate time correction circuit 33 corrects the gate time.

The gate time correction circuit 33 includes the microcomputer 2
The gate time of the read event data is corrected based on the legato coefficient leg input from 1. As described above, the correction method increases the gate time when the legato coefficient leg is large and decreases the gate time when the legato coefficient leg is small (in the staccato state). Note that the legato coefficient leg is input for each beat, but in the case of a long note that extends over two beats, the legato coefficient leg of the first beat
The whole gate time may be corrected with, and then the sound for that gate time may be generated, and the legato coefficient leg at that time may be used to correct the rest of the gate time at each beat. Good.

The volume correction circuit 34 corrects the velocity, which is a parameter included in the event data, based on the peak value peak received from the microcomputer 21. The velocity is a parameter for determining the volume of a musical sound, the shape of the attack part of the envelope, and the like. The correction rule is, for example, to increase the velocity value when the peak value peak is large, and decrease the velocity value when the peak value peak is small.

FIG. 6 is a block diagram of the tone generator circuit. The waveform generation circuit 40 generates a tone waveform signal based on the event data received from the automatic performance device 22. That is, a tone waveform signal having a pitch corresponding to a note number which is a parameter included in the event data is generated with a volume (amplitude) corresponding to the velocity. Then, it shifts to the release waveform in response to the input of the note-off signal, and then the sound is muted. The waveform generation method may be any method such as a waveform memory method, an FM method, a physical model method, and a harmonic synthesis method. The hardware is not limited to dedicated hardware, and may be configured by a DSP or a microcomputer + software.

The modulation circuit 41 generates a pitch modulation signal based on the legato coefficient leg received from the automatic performance device 22, and supplies this to the waveform generation circuit 40. The waveform generation circuit 40 can change the pitch of the generated tone waveform signal to obtain a vibrato effect by moving the note number up and down according to the pitch modulation signal. Since this pitch modulation signal is controlled by the legato coefficient leg, the vibrato depth and speed can be changed depending on the swing mode of the baton 20.

The envelope generator 43 generates an envelope waveform signal having a predetermined shape. The shape of this envelope waveform signal is changed according to the legato coefficient leg. For example, when the legato coefficient leg is large, the attack portion rises slowly, the attack portion level decreases, and the release portion falls slowly. On the contrary, when the legato coefficient leg is small, the attack part is sharply enlarged and the release part is also shortened.

The multiplier 42 applies the envelope waveform signal input from the envelope generator 43 to the waveform generation circuit 40.
A predetermined envelope is given to the tone waveform signal by multiplying the tone waveform signal input from the.

The filter circuit 44 performs a predetermined filter operation on the tone waveform signal to process the harmonic structure of the tone waveform signal. As a result, the overtone structure of the tone waveform signal changes and the tone color changes. The legato coefficient leg is also input to the filter circuit 44, and the cutoff frequency and Q of the filter are changed according to the legato coefficient leg.

In the above embodiment, the legato coefficient leg is calculated based on the characteristic of the change waveform of the swing speed of the baton 20, and the gate time, velocity, vibrato, filter coefficient, etc. are controlled by the legato coefficient leg. However, a grip sensor 26 such as a pressure sensor or a variable resistor (see the broken line in FIG. 4) is provided in the grip of the baton 20, and the musical expression is controlled according to the output of the sensor. Good. That is, the output value of this sensor is changed to the legato coefficient leg and input to the automatic performance device 22 and the tone generator circuit 23. By doing this, by swinging the baton 20 with emotion (for example, while grasping strongly),
A facial expression is added to the generated musical sound.

In this embodiment, the sensor is
One or a plurality of swing operators such as the baton 20 may be provided. When a plurality of fingers are provided, they may be provided so as to correspond to each finger. Also, a plurality of types of sensors may be installed together. One musical tone parameter may be controlled by one sensor output, or a plurality of musical tone parameters may be controlled. Further, it may be used together with the control by the feature extraction of the swing waveform described in the first embodiment.

Each circuit of the above embodiments may be configured by a microcomputer and software. Further, in the above embodiment, the swing of the baton 20 controls the tempo of the automatic performance, and the musical expression is controlled by the oscillation waveform or sensor output. The tempo may be instructed to others and the musical expression of the manual performance may be controlled by the swing waveform or the sensor output.

When combined with an automatic performance device, the control of the present invention may be applied only to a certain track among a plurality of data tracks for automatic performance.

[0045]

According to the first aspect of the present invention, since the musical tone parameters are controlled by the characteristics of the waveform, the swinging operation element is swung with emotion and the swinging operation mode is changed. Matched musical expressions are possible.

According to the second aspect of the invention, the tempo of the automatic performance can be controlled by swinging the swing operator, and the musical expression can be controlled by this swing.
It enables automatic performance control similar to that of the conductor.

According to the third aspect of the present invention, the tempo control of the automatic performance can be performed by swinging the swing operator, and the tone parameter can be controlled by the hand holding the swing operator.

[Brief description of the drawings]

FIG. 1 is a diagram showing the configuration of the invention of claim 1;

FIG. 2 is a diagram showing the configuration of the invention of claim 2;

FIG. 3 is a diagram showing the configuration of the invention of claim 3;

FIG. 4 is a diagram showing a configuration of an automatic performance system according to an embodiment of the present invention.

FIG. 5 is a block diagram of an automatic performance device used in the automatic performance system.

FIG. 6 is a block diagram of a tone generator circuit used in the automatic performance system.

FIG. 7 is a diagram showing changes in swing speed of a baton used in the automatic performance system.

FIG. 8 is a diagram showing an example of a swing pattern of the baton.

FIG. 9 is a flowchart showing the operation of a microcomputer used in the automatic performance system.

FIG. 10 is a flowchart showing the operation of a microcomputer used in the automatic performance system.

[Explanation of symbols]

1-oscillation operator, 2-oscillation sensor, 3-feature extraction means,
4-playing means, 5-musical tone parameter control means, 6-beat timing detecting means, 7-tempo control means, 8-automatic playing means, 9-holding part sensor 20-conductor rod, 21-microcomputer, 22-automatic playing device ,
23-Sound source circuit, 24-D / A converter, 25-Sound system, 26-Grip sensor, 30-Tempo control circuit, 31-Performance data memory, 32-Read circuit, 3
3-gate time correction circuit, 34-volume correction circuit 40-waveform generation circuit, 41-modulation circuit, 42-multiplier,
43-envelope generator, 44-filter.

Claims (3)

[Claims] 1. A playing means for outputting a tone parameter, a rocking operator having a rocking sensor, a feature extracting means for extracting a feature of an output waveform of the rocking sensor, and a feature extracting means for extracting the feature. A musical tone parameter control means for controlling the musical tone parameter based on the above characteristic. 2. An automatic playing means for sequentially reading automatic performance data including musical tone parameters, a rocking operator having a rocking sensor, and a beat timing detecting means for detecting a beat timing from an output waveform of the rocking sensor. Feature extraction means for extracting features of the output waveform of the swing sensor, tempo control means for controlling the read tempo of the automatic performance data based on the beat timing detected by the beat timing detection means, and the feature extraction means And a tone parameter control means for controlling the tone parameters based on the features extracted in step 1. 3. An automatic performance means for sequentially reading automatic performance data including musical tone parameters, a rocking operator having a rocking sensor and a grip sensor, and a beat for detecting a beat timing from an output waveform of the rocking sensor. Timing detection means, tempo control means for controlling the read tempo of the automatic performance data based on the beat timing detected by the beat timing detection means, and musical sound for controlling the musical tone parameters based on the output value of the grip sensor. A musical tone parameter control device comprising: parameter control means;