PERFORMANCE APPARATUS AND ELECTRONIC MUSICAL INSTRUMENT

• US 20120024128A1
• Filed: 08/01/2011
• Published: 02/02/2012
• Est. Priority Date: 08/02/2010
• Status: Active Grant

• Current Assignee: Casio Computer Company Limited
• Original Assignee: Casio Computer Company Limited
• Inventors: TAKAHASHI, Hiroki
• Granted Patent: US 8,445,769 B2
• Time in Patent Office: Days
• US Class Current: 84/600
• CPC Class Codes: G10H 1/0008 Associated control or indicating means
• CPC Class Codes: G10H 2220/201 for movement interpretation, i.e. capturing and recognizing a gesture or a specific kind of movement, e.g. to control a musical instrument
• CPC Class Codes: G10H 2220/395 Acceleration sensing or accelerometer use, e.g. 3D movement computation by integration of accelerometer data, angle sensing with respect to the vertical, i.e. gravity sensing. conductor baton movement sensing G10H2220/206, angle sensing without reference to gravity G10H2220/391; player body joint angle sensing G10H2220/321
• CPC Class Codes: G10H 2220/401 3D sensing, i.e. three-dimensional (x, y, z) position or movement sensing. movement pattern or gesture sensing G10H2220/201; geolocation sensing G10H2220/355, 3D sensing with accelerometer G10H2220/395

Abstract

A performance apparatus 11 extends in its longitudinal direction to be held by a player with his or her hand, and is provided with an acceleration sensor 23 for detecting an acceleration sensor value and an angular rate sensor 22 for detecting an angular rate of rotation of the apparatus 11 about its longitudinal axis. CPU 21 detects a sound-generation timing based on the acceleration sensor value. Using the angular rate, CPU 21 calculates a rotation angle of the performance apparatus 11 made about its longitudinal axis in a period from a first and a second timing, wherein the first and second timing correspond to starting and finishing of swinging motion of the performance apparatus, respectively. CPU 21 determines to increase or decrease a sound volume level, in accordance with the direction and amount of the calculated rotation angle, thereby adjusting a sound volume level of musical tone.

Claims

1. A performance apparatus used with musical tone generating equipment, the apparatus comprising:

a holding member extending in a longitudinal direction of the member to be held by a player with his or her hand;

an acceleration sensor provided held within the holding member, for detecting an acceleration sensor value;

an angular rate sensor provided held within the holding member, for detecting an angular rate sensor value of rotation of the holding member about an axis in the longitudinal direction of the holding member; and

a controlling unit for obtaining a sound-generation timing based on the acceleration sensor value detected by the acceleration sensor and for giving the musical tone generating equipment an instruction of generating a musical tone, wherein

the controlling unit comprises;

a sound-generation instructing unit for giving an instruction of generating a musical tone at the sound-generation timing obtained by the controlling unit;

a first rotation angle calculating unit for calculating a rotation angle of the holding member about the axis in the longitudinal direction of the holding member, based on a variation of the angular rate sensor value during a period from a starting time when the player starts swinging down motion of the holding member to a finishing time when the player finishes the swinging down motion of the holding member, wherein the starting time and the finishing time are detected based on the acceleration sensor value; and

a sound volume level calculating unit for calculating a sound volume level of a musical tone to be generated, based on the rotation angle of the holding member calculated by the first rotation angle calculating unit and for giving the calculated sound volume level of a musical tone to the sound-generation instructing unit.

3. The performance apparatus according to claim 1, wherein

the sound volume level calculating unit increases the sound volume level from a reference value when the holding member rotates about the axis in one direction, and decreases the sound volume level from the reference value when the holding member rotates about the axis in other direction.

4. The performance apparatus according to claim 3, wherein

the sound volume level calculating unit calculates the sound volume level so as to increase an increasing value from the reference value as the absolute value of the rotation angle of the holding member increases, when the holding member rotates about the axis in one direction, and decreases the sound volume level so as to increase a decreasing value from the reference value as the absolute value of the rotation angle of the holding member increases, when the holding member rotates about the axis in other direction.

5. The performance apparatus according to claim 1, wherein

the sound-generation instructing unit sets the sound-generation timing at the time when the acceleration sensor value detected by the acceleration sensor has decreased lower than a second threshold value after increasing larger than a first threshold value, wherein the second threshold value is lower than the first threshold value, and gives the musical tone generating equipment an instruction of generating a musical tone at the sound-generation timing.

6. The performance apparatus according to claim 5, wherein

the first rotation angle calculating unit calculates a rotation angle of the holding member about the axis in the longitudinal direction of the holding member, based on a variation of the angular rate sensor value during a time which is required by the acceleration sensor value to decrease to reach the second threshold value after increasing to the first threshold value.

2. A performance apparatus used with musical tone generating equipment, the apparatus comprising:

a holding member extending in a longitudinal direction of the member to be held by a player with his or her hand;

an acceleration sensor provided held within the holding member, for detecting an acceleration sensor value;

a tri-axial magnetic sensor provided held within the holding member, for detecting magnetic sensor values, respectively, along three axes, which are in accordance with the longitudinal direction of the holding member held by the player, wherein the three axes are perpendicular to each other; and

a controlling unit for obtaining a sound-generation timing based on the acceleration sensor value detected by the acceleration sensor and for giving the musical tone generating equipment an instruction of generating a musical tone, wherein

the controlling unit comprises;

a sound-generation instructing unit for giving an instruction of generating a musical tone at the sound-generation timing obtained by the controlling unit;

a second rotation angle calculating unit for calculating a rotation angle of the holding member about the axis in the longitudinal direction of the holding member, based on the magnetic sensor values obtained at a starting time when the player starts swinging down motion of the holding member and the magnetic sensor values obtained at a finishing time when the player finishes the swinging down motion of the holding member, wherein the starting time and the finishing time are detected based on the acceleration sensor value; and

a sound volume level calculating unit for calculating a sound volume level of a musical tone to be generated, based on the rotation angle of the holding member calculated by the second rotation angle calculating unit, and for giving the calculated sound volume level of a musical tone to the sound-generation instructing unit.

7. An electronic musical instrument comprising:

a performance apparatus, and

a musical instrument unit including a musical tone generating unit, wherein

the performance apparatus and the musical instrument unit have a communication unit, and further

the performance apparatus comprises;

a holding member extending in a longitudinal direction of the member to be held by a player with his or her hand;

an acceleration sensor provided held within the holding member, for detecting an acceleration sensor value;

an angular rate sensor provided held within the holding member, for detecting an angular rate sensor value of rotation of the holding member about an axis in the longitudinal direction of the holding member; and

a controlling unit for obtaining a sound-generation timing based on the acceleration sensor value detected by the acceleration sensor and for giving an instruction of generating a musical tone to the musical tone generating unit of the musical instrument unit, wherein

the controlling unit comprises;

a sound-generation instructing unit for giving an instruction of generating a musical tone at the sound-generation timing obtained by the controlling unit;

a first rotation angle calculating unit for calculating a rotation angle of the holding member about the axis in the longitudinal direction of the holding member, based on a variation of the angular rate sensor value during a period from a starting time when the player starts swinging down motion of the holding member to a finishing time when the player finishes the swinging down motion of the holding member, wherein the starting time and the finishing time are detected based on the acceleration sensor value; and

a sound volume level calculating unit for calculating a sound volume level of a musical tone to be generated, based on the rotation angle of the holding member calculated by the first rotation angle calculating unit and for giving the calculated sound volume level of a musical tone to the sound-generation instructing unit.

8. An electronic musical instrument comprising:

a performance apparatus and

a musical instrument unit including a musical tone generating unit, wherein

the performance apparatus and the musical instrument unit have a communication unit, and further

the performance apparatus comprises;

a holding member extending in a longitudinal direction of the member to be held by a player with his or her hand;

an acceleration sensor provided held within the holding member, for detecting an acceleration sensor value;

a tri-axial magnetic sensor provided held within the holding member, for detecting magnetic sensor values, respectively, along three axes, which are in accordance with the longitudinal direction of the holding member held by the player, wherein the three axes are perpendicular to each other; and

a controlling unit for obtaining a sound-generation timing based on the acceleration sensor value detected by the acceleration sensor and for giving an instruction of generating a musical tone to the musical tone generating unit of the musical instrument unit, wherein

the controlling unit comprises;

a sound-generation instructing unit for giving an instruction of generating a musical tone at the sound-generation timing obtained by the controlling unit;

a second rotation angle calculating unit for calculating a rotation angle of the holding member about the axis in the longitudinal direction of the holding member based on the magnetic sensor values obtained at a starting time when the player starts swinging down motion of the holding member and the magnetic sensor values obtained at a finishing time when the player finishes the swinging down motion of the holding member, wherein the starting time and the finishing time are detected based on the acceleration sensor value; and

a sound volume level calculating unit for calculating a sound volume level of a musical tone to be generated, based on the rotation angle of the holding member calculated by the second rotation angle calculating unit, and for giving the calculated sound volume level of a musical tone to the sound-generation instructing unit.

9. A performance apparatus used with tone generating equipment, the apparatus comprising:

a holding member extending in a longitudinal direction of the member to be held by a player with his or her hand;

an acceleration sensor provided held within the holding member, for detecting an acceleration sensor value;

an angular rate sensor provided held within the holding member, for detecting an angular rate sensor value of rotation of the holding member about an axis in the longitudinal direction of the holding member; and

a controlling unit for obtaining a sound-generation timing based on the acceleration sensor value detected by the acceleration sensor and for giving the tone generating equipment an instruction of generating a tone, wherein

the controlling unit comprises;

a sound-generation instructing unit for giving an instruction of generating a tone at the sound-generation timing obtained by the controlling unit;

a first rotation angle calculating unit for calculating a rotation angle of the holding member about the axis in the longitudinal direction of the holding member, based on a variation of the angular rate sensor value during a period from a starting time when the player starts swinging down motion of the holding member to a finishing time when the player finishes the swinging down motion of the holding member, wherein the starting time and the finishing time are detected based on the acceleration sensor value; and

a sound volume level calculating unit for calculating a sound volume level of a musical tone to be generated, based on the rotation angle of the holding member calculated by the first rotation angle calculating unit and for giving the calculated sound volume level of a tone to the sound-generation instructing unit.

10. A performance apparatus used with tone generating equipment, the apparatus comprising:

a holding member extending in a longitudinal direction of the member to be held by a player with his or her hand;

an acceleration sensor provided held within the holding member, for detecting an acceleration sensor value;

a tri-axial magnetic sensor provided held within the holding member, for detecting magnetic sensor values, respectively, along three axes, which are in accordance with the longitudinal direction of the holding member held by the player, wherein the three axes are perpendicular to each other; and

a controlling unit for obtaining a sound-generation timing based on the acceleration sensor value detected by the acceleration sensor and for giving the tone generating equipment an instruction of generating a tone, wherein

the controlling unit comprises;

a sound-generation instructing unit for giving an instruction of generating a musical tone at the sound-generation timing obtained by the controlling unit;

a second rotation angle calculating unit for calculating a rotation angle of the holding member about the axis in the longitudinal direction of the holding member, based on the magnetic sensor values obtained at a starting time when the player starts swinging down motion of the holding member and the magnetic sensor values obtained at a finishing time when the player finishes the swinging down motion of the holding member, wherein the starting time and the finishing time are detected based on the acceleration sensor value; and

a sound volume level calculating unit for calculating a sound volume level of a tone to be generated, based on the rotation angle of the holding member calculated by the second rotation angle calculating unit, and for giving the calculated sound volume level of a tone to the sound-generation instructing unit.