JP4266370B2 - Electronic musical instrument using attitude angle detection device and control method thereof - Google Patents

Description

  The present invention relates to an electronic musical instrument that controls a musical sound by an angle (gesture) of an elbow or a wrist, and a control method thereof, and more particularly, to an electronic musical instrument using a posture angle detection device suitable for digital performance using a virtual musical instrument and the electronic musical instrument It relates to a control method.

  An electronic musical instrument that controls musical sounds by the gesture of a performer is disclosed in Patent Document 1. Here, an electronic musical instrument is described in which an angle detector is attached to each joint of the performer and the musical scale can be changed based on the angle. This electronic musical instrument is a so-called gesture electronic musical instrument, and sets the pitch of a musical sound to be generated based on the bending angle of a joint. During pronunciation, the angle is divided into multiple sections, and one pitch is assigned to each divided stage. When multiple bending angles are detected, a matrix is created with each bending angle. .

  By this method, an accurate musical tone can be generated with a rough bending angle, and during sound generation, a minute angle change ((storage means)-(detection means)) from the bending angle at the time of sound generation is used as a frequency change (frequency adjustment means). It is possible to reflect the frequency change after sounding continuously.

Japanese Patent Laid-Open No. 6-83336

  An accurate musical tone can be produced with the rough bending angle described in Patent Document 1 described above, and during sound production, a minute angle change ((storage means)-(detection means)) is changed from a bending angle during sound production to a frequency change (frequency adjustment means). ), And the method of controlling an electronic musical instrument that continuously applies frequency changes after pronunciation requires a certain level of human proficiency and is difficult for inexperienced people to play and listen to the audience. there were. Further, only the scale of the musical scale can be changed, and the position and movement of the performer's gesture are limited for performance, and there is a problem that the degree of freedom of performance is small.

  The present invention has been made to solve the above-mentioned problems, and its technical problem is that it does not require a certain level of human proficiency and can be easily performed by an inexperienced person, and various sound parameters (volume strength, scale, The position and movement of the performer's gestures and movements are not restricted for performance, and the posture angle detection device can be used to move freely and perform. It is to provide an electronic musical instrument and a control method thereof.

According to a first aspect of the present invention for achieving the above object, the player's body is attached to a part connected through at least one or more joints or held by the player, and the posture of the part is A plurality of posture angle detection devices for detecting an angle, a relative position calculation means for calculating a relative position of another portion with respect to one reference portion from an output of the posture angle detection device, and an acceleration detection device for detecting an acceleration of the portion The posture angle comprising: a sound source; and a control unit that changes a sound output generated from the sound source based on an output of the posture angle detection device, an output of the relative position calculation unit, and an output of the acceleration detection device. In the electronic musical instrument using the detection device, the control unit is configured based on the output of the attitude angle detection device and the output of the relative position calculation means, based on the volume level of the sound output, the scale. Height, height of tempo, type of tone, the number of chords, with changing at least one of, when it exceeds a certain reference acceleration the output is of the acceleration detecting device, having a means for generating a sound An electronic musical instrument using a posture angle detection device characterized by the above.

According to a second aspect of the invention for achieving the above object, the player's body is attached to a part connected through at least one joint or held by the player, and the posture of the part is held. A plurality of posture angle detection devices for detecting an angle, a relative position calculation means for calculating a relative position of another portion with respect to one reference portion from an output of the posture angle detection device, and an acceleration detection device for detecting an acceleration of the portion The posture angle comprising: a sound source; and a control unit that changes a sound output generated from the sound source based on an output of the posture angle detection device, an output of the relative position calculation unit, and an output of the acceleration detection device. In the control method of the electronic musical instrument using the detection device, the control unit determines the volume of the sound output based on the output of the posture angle detection device and the output of the relative position calculation means. Weak, high and low of the scale, tempo high and low, the type of tone, the number of chords, with changing at least one of, when it exceeds a certain reference acceleration the output is of the acceleration detecting device, to generate a sound It is a control method of an electronic musical instrument using a posture angle detection device.

According to the present invention, the posture of the body of the performer is calculated by using the posture angle detection device, and the movement of the body is controlled by controlling the sound and music (the movement of arranging already recorded music). Since it can be played with a large degree of freedom, it does not require a certain level of human proficiency, and inexperienced people can easily perform. In addition, the electronic instrument and its control method for calculating the relative position of the performer's body using the posture angle detector and controlling the sound and music (the movement to arrange the music already recorded) are output. By adding an acceleration detection device that generates sound when a certain reference acceleration is exceeded, it is judged whether the acceleration is greater than a predetermined value, and if so, it is output to a speaker and a sound is produced. By adding a function that allows each sound to be generated and finished into music, various sound parameters (volume level, scale level, tempo level, tone type, chord type, etc.) Number).

  As a result, it does not require a certain level of human proficiency and can be easily played by inexperienced people, and can control various sound parameters (volume level, scale level, tempo level, tone type, number of chords). Thus, it is possible to provide an electronic musical instrument using a posture angle detection device and a control method thereof that can perform a performance by freely moving the body without being limited by the position and movement of the performer's gesture.

  An electronic musical instrument using an attitude angle detection device according to the best mode for carrying out the present invention and a control method thereof will be described in detail below with reference to the drawings and examples. It is not limited.

FIG. 1 is an overall schematic diagram of an electronic musical instrument using a posture angle detection device according to a reference example of the present invention and a control method thereof. FIG. 2 is an overall block diagram of an electronic musical instrument using a posture angle detection device according to a reference example of the present invention and a control method thereof. FIG. 3 is an overall schematic diagram of an electronic musical instrument using the attitude angle detection device according to the embodiment of the present invention and a control method thereof. FIG. 4 is an overall block diagram of an electronic musical instrument using the attitude angle detection device according to the embodiment of the present invention and a control method thereof.

( Reference example )
The attitude angle detection device according to a reference example of the present invention with an electronic musical instrument and a control method thereof will be described with reference to the drawings was used. As shown in FIG. 1, posture angle detection devices 12a, 12b, 12c, and 12d are attached to both arms of the player 11. The attitude angle detection device used was a 3D motion sensor manufactured by NEC TOKIN Corporation. These are connected to a USB hub 13 attached to the waist of the performer 11, combined into one, and then connected to a personal computer 14. A speaker 15 is connected to the personal computer 14.

  As shown in FIG. 2, the posture angle is output to the relative position calculation means 22 from the posture angle detection devices 21a, 21b, 21c, and 21d. The relative position calculation means 22 calculates the relative position of the right wrist and the left wrist and outputs it to the control unit 23 together with the posture angle output. The control unit 23 changes the sound data output from the sound file 24, which is a sound source, according to the relative position output and the attitude angle output, and outputs it to the speaker.

  First, the relative position calculation means will be described. From the posture angle detection devices attached to the performer's right forearm, upper right arm, left upper arm, and left forearm, triaxial posture angles at the respective parts are output. Here, it is assumed that the origin of coordinates is the right wrist. Assuming that the length of each part of the performer is known in advance, a vector of the length of the right forearm is obtained. The coordinates of the right elbow are obtained by rotating with the output of three axes in the first posture angle detection device attached to the right forearm. Similarly, a vector of the length of the upper right arm is obtained. The coordinates of the right shoulder with respect to the right elbow are obtained by rotating with the output of three axes in the second posture angle detection device attached to the upper right arm.

  In this way, the coordinates of the joint are obtained one after another, and when all are added together at the end, the relative coordinates of the left wrist with respect to the right wrist as the origin can be obtained. Strictly speaking, a posture angle detection device is also required between the right shoulder and the left shoulder, that is, the chest portion, but the error can be reduced by setting the length of the upper arm part to be longer by half the shoulder width. Here, the chest device is omitted in order to reduce the burden of wearing and the feeling of binding and to reduce the cost.

  Next, the control unit will be described. The relative position calculation means inputs the relative position of the left wrist with respect to the right wrist and the output of each posture angle detection device from the relative position calculation means. Here, control is performed according to the relative position (X, Y, Z). The X axis represents the front and back of the body and assigns the volume level. If you put your right hand in front of your left hand, the volume will increase. Conversely, if you put your left hand in front of your right hand, the volume will decrease. The Y axis represents the left and right sides of the body and assigns the number of chords. The sound file contains the parts of each instrument related to the basic music. The number of instruments increases as you spread your hands from side to side, and the number of instruments decreases when you cross your left and right hands. . The Z axis represents the top and bottom of the body and assigns the scale level. Raising the right hand above the left hand raises the scale, and conversely raising the left hand above the right hand lowers the scale. The number of parameters to be controlled can be increased, but increasing the number makes the player confused and difficult to perform, so about three is a reasonable number.

For the electronic musical instrument and a control method thereof using the attitude angle detection apparatus according to the present invention will be described with reference to the drawings. As shown in FIG. 3, posture angle detectors 32a and 32b are attached to the left arm of the player 31, and an acceleration detector 33 is attached to the right arm. The attitude angle detection device and the acceleration detection device used a 3D motion sensor manufactured by NEC TOKIN Corporation. These are connected to a USB hub 34 attached to the waist of the performer 31 and are connected to a personal computer 35 after being integrated into one. A speaker 36 is connected to the personal computer 35.

As shown in FIG. 4, the posture angle is output to the relative position calculation means 43 from the posture angle detection devices 41 a and 41 b. The relative position calculation means 43 calculates the relative position of the left wrist and the left shoulder and outputs it to the control unit 44 together with the posture angle output. On the other hand, acceleration is also output from the acceleration detection device 42 to the control unit 44. The control unit 44 changes the sound data output from the sound file 45, which is a sound source, by the relative position output and the attitude angle output, determines whether to output by the acceleration output, and outputs it to the speaker 46. The relative position calculation means is the same as the content of the reference example . A relative position between the left wrist and the left shoulder is calculated from a posture angle detection device attached to the player's left forearm and left upper arm.

  Next, the control unit will be described. The relative position calculation means receives the relative position of the left shoulder relative to the left wrist and the output of each posture angle detection device from the relative position calculation means. Here, control is performed by the relative position (X, Y, Z) and the roll angle R of the left forearm. The X axis represents the front and back of the body and assigns the volume level. If you put your left hand in front of your left shoulder, the volume will increase. Conversely, if you put your left hand behind your left shoulder, the volume will decrease. The Y axis represents the left and right sides of the body and assigns tempo levels. If you put your left hand to the left of the left shoulder, the tempo will increase. Conversely, if you put your left hand to the right of the left shoulder, the tempo will decrease. The Z axis represents the top and bottom of the body and assigns the scale level. Raising the right hand above the left hand raises the scale, and conversely raising the left hand above the right hand lowers the scale. The R axis is the angle in the direction of twisting the arm and assigns the type of instrument. The sound file contains a single note of each instrument, and the instrument is selected in three stages according to the position where the left hand is twisted. Although four parameters are changed here, the number of parameters to be controlled can be increased. In this way, the sound to be sounded is determined by the posture of the left arm, and acceleration is generated by swinging the right arm, but it is determined whether the acceleration is greater than a predetermined value. Is sounding.

  As described above, the present invention does not require a certain level of human proficiency and can be easily played by inexperienced people. Various sound parameters (volume level, scale level, tempo level, tone type, The number of chords) can be controlled, and the position and movement of the player's gestures are not limited for performance, and it is possible to provide an electronic musical instrument using a posture angle detection device that can be freely moved and played, and its control method It turns out that it becomes.

1 is an overall schematic diagram of an electronic musical instrument using a posture angle detection device according to a reference example of the present invention and a control method thereof. The whole block diagram of the electronic musical instrument using the attitude | position angle detection apparatus which concerns on the reference example of this invention , and its control method . 1 is an overall schematic diagram of an electronic musical instrument using a posture angle detection device according to an embodiment of the present invention and a control method thereof. 1 is an overall block diagram of an electronic musical instrument using a posture angle detection device according to an embodiment of the present invention and a control method thereof.

11 Performers 12a, 12b, 12c, 12d Attitude angle detection device 13 USB hub 14 Personal computer 15 Speakers 21a, 21b, 21c, 21d Attitude angle detection device 22 Relative position calculation means 23 Control unit 24 Sound file 25 Speaker 31 Speaker 32 Performer 32a, 32b Attitude angle detection device 33 Acceleration detection device 34 USB hub 35 Personal computer 36 Speakers 41a, 41b Attitude angle detection device 42 Acceleration detection device 43 Relative position calculation means 44 Control unit 45 Sound file 46 Speaker

Claims (2)

A plurality of posture angle detection devices that are attached to or are held by a player through at least one joint of the performer's body, and that detect the posture angle of the portion; Relative position calculation means for calculating the relative position of another part with respect to one reference part from the output of the posture angle detection apparatus, an acceleration detection apparatus for detecting the acceleration of the part, a sound source, the output of the posture angle detection apparatus, and In the electronic musical instrument using the posture angle detection device configured to change the sound output generated from the sound source based on the output of the relative position calculation means and the output of the acceleration detection device , the control unit includes: , Based on the output of the attitude angle detection device and the output of the relative position calculation means, the volume of the sound output, the level of the scale, the level of the tempo, the type of tone, the chord Electronic number, along with changing at least one of, when it exceeds a certain reference acceleration with the output of said acceleration detecting device, using the attitude angle detection device, characterized in that it comprises a means for generating a sound Musical instrument. A plurality of posture angle detection devices that are attached to or are held by a player through at least one joint of the performer's body, and that detect the posture angle of the portion; Relative position calculation means for calculating the relative position of another part with respect to one reference part from the output of the posture angle detection apparatus, an acceleration detection apparatus for detecting the acceleration of the part, a sound source, the output of the posture angle detection apparatus, and In the control method of an electronic musical instrument using the posture angle detection device configured by a control unit that changes a sound output generated from the sound source based on an output of the relative position calculation means and an output of the acceleration detection device , The control unit, based on the output of the attitude angle detection device and the output of the relative position calculation means, the volume level of the sound output, the scale level, the tempo level, the tone color of the tone Use class, the number of chords, Rutotomoni changing at least one of, when it exceeds a certain reference acceleration the output is of the acceleration detecting device, the attitude angle detection device, characterized in that to generate the sound Control method for electronic musical instruments.

Images