JP2012013725A - Musical performance system and electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a performer to change various musical sound components as desired.SOLUTION: CPUs 21 of a first musical performance device body 11-1 and a second musical performance device body 11-2 transmit note-on events to a musical instrument part 19 in sound generation timing acquired based upon an acceleration sensor value. The CPU 21 of the first musical performance device body 11-1 calculates a first difference value indicative of an angle between a reference azimuth of the first musical performance device body 11-1 and an axis-directional azimuth of the first musical performance device body 11-1 when the first musical performance device body 11-1 is shaken, and determines the pitch of a musical sound to be generated based upon the first difference value. The CPU 21 of the second musical performance device body 11-2 calculates a second difference value indicative of an angle between a reference azimuth of the second musical performance device body 11-2 and an axis-directional azimuth of the second musical performance device body 11-2 when the second musical performance device body 11-2 is shaken, and determines the pitch of a musical sound to be generated based upon the second difference value.

Description

  The present invention relates to a performance system and an electronic musical instrument that generate music by holding and shaking by a player.

  Conventionally, there has been proposed an electronic musical instrument in which a sensor is provided on a stick-shaped member, and the player detects the movement of the member by holding the member by hand and shakes the member to generate a musical sound. ing. In particular, in this electronic musical instrument, the stick-shaped member has a shape like a drum stick or a drum repellent, so that a percussion instrument sound is uttered in response to the player's action of hitting the drum or drum. It has become.

  For example, in Patent Document 1, an acceleration sensor is provided on a stick-shaped member, and when a predetermined time elapses after the output from the acceleration sensor (acceleration sensor value) reaches a predetermined threshold value, a musical sound is generated. A configured performance device has been proposed.

Japanese Patent No. 2663503 Japanese Patent Application No. 2007-256736

  In the performance device disclosed in Patent Document 1, only the sound generation of the musical tone is controlled based on the acceleration sensor value of the stick-shaped member, and it is not easy to realize the musical tone change as desired by the performer. There was no problem.

  Patent Document 2 proposes an apparatus that can generate a plurality of timbres, and uses a geomagnetic sensor to generate one of a plurality of timbres according to the direction in which the stick-shaped member is directed.

  An object of the present invention is to provide a performance system and an electronic musical instrument that allow a player to change not only the tone color but also a wide variety of musical sound components as desired.

The purpose of the present invention is to
A longitudinally extending retaining member for the performer to hold by hand;
An acceleration sensor disposed in the holding member;
A magnetic sensor disposed in the holding member;
A performance system comprising a first performance device main body and a second performance device main body, and a control means for giving a sound generation instruction to a music sound generation means for generating a predetermined music sound,
The control means of the first performance device body and the second performance device body are:
A sound generation instruction means for giving a sound generation instruction to the music sound generation means at the sound generation timing acquired based on the acceleration sensor value;
The first performance device main body includes:
While having a first difference value calculation means for obtaining a first difference value indicating an angle formed by a preset reference direction and an axial direction of the holding member based on a sensor value of the magnetic sensor ,
The control means of the first performance device main body includes a pitch determination means for determining a pitch of the musical tone to be generated based on the first difference value obtained by the first difference value calculation means. Have
The second performance device main body is:
Based on the sensor value of the magnetic sensor, there is provided a second difference value calculating means for acquiring a second difference value indicating an angle formed by a preset reference direction and an axial direction of the holding member. ,
The control means of the second performance device main body has tone color determining means for determining a tone color of the tone to be generated based on the second difference value obtained by the second difference value calculating means. Is achieved by a performance system characterized by

In a preferred embodiment, each of the first performance device main body and the second performance device main body has communication means,
The communication means of the first performance device main body transmits the first difference value and receives the second difference value,
The control means of the first performance device main body has timbre determining means for determining a tone color of the musical tone to be generated based on the received second difference value;
The communication means of the second performance device main body transmits the second difference value and receives the first difference value,
The control means of the second performance device main body has a pitch determination means for determining a pitch of the musical tone to be generated based on the received first difference value.

  In a preferred embodiment, the pitch determining means determines the pitch of the musical tone so that the pitch is uniformly increased or decreased as the first difference value increases.

  In a more preferred embodiment, the pitch determining means refers to a table stored in a storage device that associates the range of the first difference value with the pitch, and calculates the pitch of the musical tone. decide.

  In another preferred embodiment, the timbre determining means determines the tone color of the musical tone with reference to a table stored in a storage device in which the second difference value range is associated with the timbre. .

  In a preferred embodiment, the first difference value calculating means and the second difference value calculating means are based on the sensor value of the magnetic sensor at an angle formed by the direction of magnetic north and the axial direction of the holding member. A first offset value is configured to obtain a reference offset value that is an angle formed by the direction of the magnetic north and the axial direction of the holding member at the time of setting as a value indicating the reference azimuth. The difference between the offset value and the reference offset value is calculated as the difference value and the second difference value, respectively.

  In still another preferred embodiment, the sound generation instructing means of the control means of the first performance device main body and the second performance device main body has the acceleration sensor value exceeding a predetermined first threshold, and thereafter The musical sound generating means is instructed to generate sound, with the timing being smaller than the second threshold smaller than the first threshold as the sound generation timing.

In a preferred embodiment, the control means includes volume level calculation means for detecting a maximum value of the acceleration sensor value and calculating a volume level according to the maximum value.
The sound generation instruction means gives a sound generation instruction to the music sound generation means at the sound generation timing at the sound volume level calculated by the sound volume level calculation means.

Another object of the present invention is to provide the above performance system,
A musical instrument unit comprising the musical sound generating means,
The performance device and the musical instrument unit are each achieved by an electronic musical instrument comprising a communication means.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the performance system and electronic musical instrument which can change a various musical tone component as a player desires.

FIG. 1 is a block diagram showing the configuration of the electronic musical instrument according to the first embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the performance device main body according to the present embodiment. FIG. 3 is a flowchart showing an example of processing executed in the first performance device main body according to the present embodiment. FIG. 4 is a flowchart showing an example of processing executed in the second performance device main body according to the present embodiment. FIG. 5 is a flowchart showing an example of the first reference setting process according to the present embodiment. FIG. 6 is a flowchart illustrating an example of the second reference setting process according to the present embodiment. FIG. 7 is a flowchart showing an example of sound generation timing detection processing according to the present embodiment. FIG. 8 is a flowchart showing an example of the note-on event generation process according to the present embodiment. FIG. 9 is a flowchart showing an example of processing executed in the musical instrument unit according to the present embodiment. FIG. 10 is a graph schematically showing an example of the acceleration sensor value detected by the acceleration sensor of the performance device main body. FIGS. 11A and 11B are diagrams illustrating the difference value θ _Rd . FIG. 12A shows an example of a table in which the range of the difference value θ _Rd is associated with the pitch of a percussion musical tone, and FIG. 12B shows the direction and sound of shaking the first performance apparatus main body. It is a figure which shows typically the relationship with high. FIG. 13A shows an example of a table in which the range of the difference value θ _Ld is associated with the timbre, and FIG. 13B schematically shows the relationship between the direction in which the second performance device body is shaken and the timbre. FIG. FIG. 14 is a graph for explaining the correspondence between the range of acceleration sensor values and the sound volume level (velocity) in the second embodiment. FIG. 15 is a diagram illustrating an example when the performer holds the first performance device main body 11-1 and the second performance device main body 11-1 in their respective hands and shakes one of them. FIG. 16 is a diagram showing an example when the performer holds the first performance device main body 11-1 and the second performance device main body 11-1 in their respective hands and shakes one of them.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing the configuration of the electronic musical instrument according to the first embodiment of the present invention. As shown in FIG. 1, an electronic musical instrument 10 according to the present embodiment has a plurality of performance apparatus main bodies 11-1 and 11-2 extending in the longitudinal direction for a player to shake in their hands. is doing. The performer holds one of the plurality of performance apparatus main bodies (for example, the first performance apparatus main body 11-1) with the right hand and the other (for example, the second performance apparatus main body 11-2) with the left hand. The electronic musical instrument 10 includes a musical instrument unit 19 for generating musical sounds. The musical instrument unit 19 includes a CPU 12, an interface (I / F) 13, a ROM 14, a RAM 15, a display unit 16, an input unit 17, and a sound system 18. Have.

  As will be described later, the first performance device main body 11-1 includes an acceleration sensor 23 and a geomagnetic sensor 22 in the vicinity of the tip side opposite to the root side held by the performer. The second performance device main body 11-2 also has the same configuration as the performance device main body 11-1. In the present embodiment, the first performance device main body 11-1 and the second performance device main body 11-2 constitute a performance system. In the present specification, particularly when there is no need to distinguish between the first performance device main body 11-1 and the second performance device main body 11-2, any performance device main body is designated as the performance device main body 11. Is written.

  The I / F 13 of the musical instrument unit 19 accepts data (for example, a note-on event) from the performance apparatus main body 11, stores it in the RAM 15, and notifies the CPU 12 of acceptance of the data. In the present embodiment, for example, an infrared communication device 24 is provided at the base side end of the performance device main body 11, and an infrared communication device 33 is also provided in the I / F 13. Therefore, the musical instrument unit 19 can receive data from the performance apparatus main body 11 when the infrared communication apparatus 33 of the I / F 13 receives the infrared rays emitted from the infrared communication apparatus 24 of the performance apparatus main body 11.

  The CPU 12 controls the electronic musical instrument 10 as a whole, in particular, controls the musical instrument unit 19 of the electronic musical instrument, detects an operation of a key switch (not shown) constituting the input unit 17, and a note-on event received via the I / F 13. Various processes such as generation of musical sounds based on the above are executed.

  The ROM 14 controls the entire electronic musical instrument 10, in particular, controls the musical instrument unit 19 of the electronic musical instrument, detects operation of a key switch (not shown) constituting the input unit 17, and note-on events received via the I / F 13. Various processing programs, such as generation of musical sounds based on, are stored. The ROM 14 stores waveform data of various tones, for example, wind instruments such as flutes, saxophones, and trumpets, keyboard instruments such as pianos, stringed instruments such as guitars, bass drums, hi-hats, snares, and cymbals. Includes waveform data area.

  The RAM 15 stores programs read from the ROM 14 and data and parameters generated in the process. The data generated in the process includes the operation state of the switch of the input unit 17, the sensor value received via the I / F 13, etc., the tone generation state (sound generation flag), the range of angle difference values and the tone described later. And a table in which a range of angle difference values and a timbre are associated with each other.

  The display unit 16 includes, for example, a liquid crystal display device (not shown), and is a table (pitch table) in which the tone color of a musical tone to be generated, a range of difference values of angles described later, and a musical tone pitch are associated with each other. In addition, a table (tone color table) in which a range of angle difference values and timbres are associated with each other can be displayed. The input unit 17 includes a switch (not shown) and can instruct designation of a timbre.

  The sound system 18 includes a sound source unit 31, an audio circuit 32, and a speaker 35. The sound source unit 31 reads out waveform data from the waveform data area of the ROM 15 according to the note-on event given from the CPU 12, and generates and outputs musical sound data. The audio circuit 32 converts the musical sound data output from the sound source unit 31 into an analog signal, amplifies the converted analog signal, and outputs the amplified analog signal to the speaker 35. As a result, a musical sound is output from the speaker 35.

  FIG. 2 is a block diagram showing the configuration of the performance device main body according to the present embodiment. As shown in FIG. 2, the performance device main body 11 has a geomagnetic sensor 22 and an acceleration sensor 23 on the tip side opposite to the base side held by the performer. The position of the geomagnetic sensor 22 is not limited to the tip side, and may be arranged on the root side. The geomagnetic sensor 22 includes a magnetoresistive effect element and a Hall element, and can detect each magnetic field component in the x, y, and z directions. The acceleration sensor 23 is, for example, a capacitance type or piezoresistive element type sensor, and can output a data value indicating the generated acceleration. The acceleration sensor 23 according to the present embodiment outputs, for example, an acceleration sensor value in the axial direction of the performance device main body 11. In the present embodiment, the z axis in the geomagnetic sensor 23 is an axis perpendicular to the ground surface, the x axis is an axis perpendicular to the z axis, and the y axis is an axis perpendicular to the x axis and the z axis. is there.

  When the performer actually plays the drum, he holds one end (base side) of the stick in his hand and causes the stick to rotate around the shoulder, elbow, wrist and the like. Therefore, in this embodiment, the acceleration sensor value in the longitudinal direction (axial direction) of the performance device main body 11 is acquired in order to detect the centrifugal force in the longitudinal direction of the performance device main body 11 accompanying the rotational movement. Of course, a triaxial sensor may be used as the acceleration sensor.

  The performance device main body 11 includes a CPU 21, an infrared communication device 24, a ROM 25, a RAM 26, an interface (I / F) 27, and an input unit 28. The CPU 21 acquires the sensor value in the performance apparatus main body 11, the reference value of the geomagnetic sensor 22 (acquisition of the reference offset value), the detection of the tone generation timing of the tone according to the sensor value, the pitch and tone color of the tone to be generated. Processing such as determination, generation of a note-on event, and transmission control of the note-on event via the I / F 27 and the infrared communication device 24 is executed.

  The ROM 25 acquires the sensor value in the performance apparatus main body 11, the reference value of the geomagnetic sensor 22 (acquisition of the reference offset value), the detection of the tone generation timing of the tone according to the sensor value, the pitch and tone color of the tone to be generated Are stored, processing for generating a note-on event, and controlling transmission of a note-on event via the I / F 27 and the infrared communication device 24 are stored. The RAM 26 stores values obtained or generated in the process such as sensor values. The I / F 27 outputs data to the infrared communication device 24 in accordance with an instruction from the CPU 21. The input unit 28 has a switch (not shown).

  FIG. 3 is a flowchart showing an example of processing executed in the first performance device main body according to the present embodiment. FIG. 4 is a flowchart showing an example of processing executed in the second performance device main body according to the present embodiment. Since both processes are substantially the same, first, the process in the second performance apparatus main body 11-2 will be described as needed while the process in the first performance apparatus main body 11-1 will be described. As shown in FIG. 3, the CPU 21 of the first performance device main body 11-1 executes an initialization process including clearing of data in the RAM 26 (step 301). Next, the CPU 21 determines whether or not there is an instruction to set reference information by operating the switch of the input unit 28 (step 302). If it is determined Yes in step 302, the CPU 21 executes a first reference setting process (step 303).

  As shown in FIG. 4, in the second performance device main body 11-2 as well as the first performance device main body 11-1, after the initialization process (step 401), the reference information is operated by the switch operation of the input unit 28. It is determined whether a setting instruction has been given (step 402). When it is determined Yes in step 402, the CPU 21 of the second performance device main body 11-2 executes a second reference setting process (step 403).

  FIG. 5 is a flowchart showing an example of the first reference setting process according to the present embodiment. In the first reference setting process, when the performer turns on a setting switch (not shown) of the input unit 28 of the first performance device main body 11-1, the first performance device main body 11-1 is turned on. The direction is acquired as the first reference value (first reference offset value). First, the CPU 21 acquires the sensor value of the geomagnetic sensor 22, and based on the acquired sensor value, the magnetic north (the north direction indicated by the geomagnetism) and the (longitudinal direction) axis of the first performance device main body 11-1. An angle formed with the direction (that is, an angle indicating a deviation between the magnetic north and the axial direction of the first performance device main body 11-1) is calculated (step 501).

The CPU 21 determines whether the setting switch of the input unit 28 has been turned on (step 502). When it is determined Yes in step 502, CPU 21 is an angle indicating the deviation is stored in the RAM26 as the first reference offset value theta _RP (step 503). Next, the CPU 21 determines whether an end switch (not shown) of the input unit 28 is turned on (step 504). If it is determined No in step 504, the process returns to step 501. On the other hand, if it is determined Yes in step 504, the first reference setting process is terminated. The first reference offset value θ _RP is stored in the RAM 26 by the first reference setting process described above.

FIG. 6 shows a second reference setting process executed in the second performance device main body 11-2. As can be understood from FIG. 6, the second reference setting process is substantially the same as the first reference setting process. In the second reference setting process, steps 601 and 602 are the same as steps 501 and 502 in FIG. If it is determined Yes in step 602, the CPU 21 of the second performance device main body 11-2 stores the angle indicating the deviation in the RAM 26 as the second reference offset value θ _LP (step 603). Step 604 in FIG. 6 is similar to step 504 in FIG.

When the first reference setting process (step 303) is completed in the first performance device main body 11-1, the CPU 21 acquires the sensor value of the geomagnetic sensor 22, and the current magnetic north (the north direction indicated by the geomagnetism). ) And the axial direction of the first musical instrument main body 11-1 (that is, an angle indicating the deviation between magnetic north and the axial direction of the first musical instrument main body 11) (step 304). The CPU 21 stores the angle indicating the deviation obtained in step 304 in the _RAM 26 as the first offset value θR (step 305). Moreover, CPU21 acquires the sensor value (acceleration sensor value) of the acceleration sensor 23, and stores it in RAM26 (step 306). As described above, in the present embodiment, the sensor value in the longitudinal direction (axial direction) of the first performance device main body 11-1 is employed as the acceleration sensor value.

When the second reference setting process (step 403) is completed in the second performance device main body 11-2, the CPU 21 of the second performance device main body 11-2 also acquires the sensor value of the geomagnetic sensor 22 and The angle between the magnetic north (the north direction indicated by the geomagnetism) and the axial direction of the second performance device main body 11-2 is calculated (step 404). CPU21 is the angle indicating the deviation obtained in step 404 is stored in the RAM26 as the second offset value theta _L (step 405). The subsequent step 406 is the same as step 306 in FIG.

After step 306 is executed in the first performance device 11-1, the CPU 21 executes sound generation timing detection processing (step 307). Also in the second performance device 11-2, a sound generation timing detection process is executed (step 407). FIG. 7 is a flowchart showing an example of sound generation timing detection processing according to the present embodiment. In both the first performance device main body 11-1 and the second performance device main body 11-2, substantially the same sound generation timing detection processing is executed. As shown in FIG. 7, the CPU 21 reads the acceleration sensor value and the offset value stored in the RAM 26 (step 701). Incidentally, as an offset value, in the first performance apparatus 11-1, the first offset value theta _R is read, the second performance apparatus 11-2, as described later, the second offset value θ _L is read.

  Next, the CPU 21 determines whether or not the acceleration sensor value is greater than a predetermined first threshold value α (step 702). If it is determined Yes in step 702, the CPU 21 sets “1” in the acceleration flag in the RAM 26 (step 703). The CPU 21 determines whether the acceleration sensor value read in step 701 is larger than the maximum acceleration sensor value stored in the RAM 26 (step 704). If it is determined Yes in step 704, the acceleration sensor value read from the RAM 26 is stored in the RAM 26 as a new maximum value (step 705).

  When it is determined No in step 702, the CPU 21 determines whether the acceleration flag in the RAM 26 is “1” (step 706). If it is determined No in step 706, the sound generation timing detection process ends. When it is determined Yes in step 706, the CPU 21 determines whether the acceleration sensor value is smaller than a predetermined second threshold value β (step 707). If it is determined Yes in step 707, the CPU 21 executes a note-on event generation process (step 708).

  FIG. 8 is a flowchart showing an example of the note-on event generation process according to the present embodiment. By the note-on event generation process shown in FIG. 8, the note-on event is transmitted from the first performance device 11-1 and the second performance device 11-2 to the musical instrument unit 19, and then the musical instrument unit 19 generates a sound generation process (FIG. 9) is executed, musical tone data is generated and a musical tone is generated from the speaker 35.

  Prior to the description of the note-on event generation process, the sound generation timing in the electronic musical instrument 10 according to the present embodiment will be described. FIG. 10 is a graph schematically showing an example of the acceleration sensor value detected by the acceleration sensor 23 of the performance device main body 11. When the performer swings while holding one end (base side) of the performance apparatus main body 11, the performance apparatus main body 11 is caused to rotate with the wrist, elbow, shoulder, or the like as a fulcrum. Accompanying this rotational movement, acceleration is generated in the longitudinal direction (axial direction) of the musical instrument main body 11 in particular by centrifugal force.

  When the performer swings the performance apparatus main body 11, the acceleration sensor value gradually increases (see reference numeral 1001 in the curve 1000 in FIG. 10). When the performer swings the stick-like performance apparatus main body 11, generally, the operation is similar to the operation of hitting the drum. Therefore, the performer stops the operation of the stick (that is, the stick-shaped performance device main body 11) just before hitting the stick on the virtually set drum surface. Therefore, the acceleration sensor value gradually decreases from a certain time (see reference numeral 1002). The performer assumes that the musical sound is generated at the moment when the stick is struck on the virtual drum surface. Therefore, it is desirable that the musical sound can be generated at the timing assumed by the performer.

In the present invention, the logic described below is employed in order to generate a musical sound at the moment or slightly before the player strikes the virtual drum surface. The sound generation timing is when the acceleration sensor value decreases and becomes smaller than the second threshold value β slightly larger than “0”. However, there is a possibility that the acceleration sensor value vibrates and reaches around the above-described second threshold value β due to an operation unexpected by the performer. Therefore, in order to eliminate unexpected vibrations, it is a condition that the acceleration sensor value once rises and exceeds a predetermined first threshold value α (α is sufficiently larger than β). That is, (see time t _alpha) acceleration sensor value becomes temporarily larger than the first threshold value alpha, then, with the acceleration sensor value is reduced, when it becomes less than the second threshold value beta (see time t _beta), time t _β is used as the sound generation timing. When it is determined that the sound generation timing as described above has arrived, a note-on event is generated in the performance apparatus main body 11 and transmitted to the instrument unit 19. In response to this, the musical instrument unit 19 performs a sound generation process to generate a musical sound.

  As shown in FIG. 8, in the note-on event generation process, the CPU 21 refers to the maximum value of the acceleration sensor value stored in the RAM 26 and determines the volume level (velocity) of the musical sound based on the maximum value ( Step 801).

  When the maximum value of the acceleration sensor value is Amax and the maximum value of the volume level (velocity) is Vmax, the volume level Vel can be obtained as follows, for example.

Vel = a · Amax
(However, if a · Amax> Vmax, Vel = Vmax, and a is a predetermined positive coefficient)

Next, the CPU 21 obtains a difference value θ _Rd = (θ _R −θ _RP ) between the first offset value θ _R stored in the _RAM 26 and the first reference offset value θ _RP, and the obtained difference value θ _Rd. Based on the above, the pitch of the musical tone to be uttered is determined (step 802). FIGS. 11A and 11B are diagrams illustrating the difference value θ _Rd . In addition, the following description is applied also about 2nd difference value (theta) _Ld .

As shown in FIGS. 11 (a) and 11 (b), the direction of the playing device main body when the setting switch is turned on (reference direction: see P) and the direction when the playing device main body 11 is shaken (reference code). The difference value θ _Rd with respect to C) may be positive (FIG. 11 (a)) or negative (FIG. 11 (b)). When viewed from the performer, if the performance device main body 11 is shaken on the left side of the reference position, the difference value θ _Rd becomes positive, and if the performance device main body 11 is shaken on the right side, the difference value θ _Rd becomes negative.

  In the drum set tom (high tom, rotor, floor tom), the drums are arranged in the order of increasing pitches clockwise from the viewpoint of the performer. For example, they are arranged in the order of high tom, rotum, and floor tom in the clockwise direction. Therefore, when a musical tone of a percussion instrument tone is generated, the pitch of the performance device main body 11 changes clockwise in the axial direction of the performance device main body 11 when the performance device main body 11 is swung. It is set so as to become lower as it goes on. On the other hand, in musical instruments such as piano, marimba, and vibraphone, the pitch of the musical instrument becomes higher as it becomes the right key from the viewpoint of the performer. Therefore, when a musical tone is produced with the tone of a normal musical instrument such as a keyboard instrument, the pitch of the performance device main body 11 is clockwise when viewed from the performer. It is set to be higher as it changes.

In the following example, a description will be given of a case where a musical scale such as C (do), D (le), and E (mi) is played. 12A is a diagram showing an example of a pitch table in which the range of the difference value θ _Rd is associated with the pitch of the musical tone, and FIG. 12B is a direction in which the first performance apparatus main body is shaken. It is a figure which shows typically the relationship between and a pitch. The pitch table shown in FIG. 12A is stored in the RAM 26 of the performance apparatus main body 11. As shown in the pitch table of FIG. 12A, as the direction in which the performance device main body 11 is swung changes clockwise as viewed from the performer, the pitches are changed to C (do) and D (re). , E (Mi), F (Fa), and so on. In step 802, the CPU 21 may refer to the pitch table 1200 in the RAM 26 and obtain pitch information corresponding to the difference value θ _Rd .

Further, the CPU 21 obtains a difference value θ _Ld = (θ _L −θ _LP ) between the second offset value θ _L stored in the RAM 26 and the second reference offset value θ _LP, and the obtained difference value θ _Ld. Based on the above, the tone color of the musical tone to be uttered is determined (step 803). The RAM 26 stores a timbre table in which the range of the difference value θ _Ld is associated with the timbre. FIG. 13A is a diagram showing an example of a timbre table in which the range of the difference value θ _Ld is associated with the timbre, and FIG. 13B shows the relationship between the direction in which the performance device main body 11 is shaken and the timbre. It is a figure shown typically. As shown in FIGS. 13 (a) and 13 (b), tones can be generated from the left to the right (clockwise) as viewed from the performer (tom (percussion instrument), trumpet, guitar, piano tone). It has become. Of course, the timbres and their order are merely exemplary.

In step 803, the CPU 21 may refer to the timbre table 1300 in the RAM 26 and obtain timbre information corresponding to the difference value θ _Ld . Thereafter, the CPU 21 generates a note-on event including information indicating the volume level (velocity), the obtained pitch, and the timbre (step 804).

  The CPU 21 outputs the generated note-on event to the I / F 27 (step 805). The I / F 27 causes the infrared communication device 24 to transmit a note-on event as an infrared signal. An infrared signal from the infrared communication device 24 is received by the infrared communication device 33 of the musical instrument unit 19. Thereafter, the CPU 21 resets the acceleration flag in the RAM 26 to “0” (step 806).

  When the sound generation timing detection process (step 307) ends in the first performance device 11-1, the CPU 21 executes a parameter communication process (step 308). The parameter communication process (step 308) will be described together with the parameter communication process (step 905 in FIG. 9) in the musical instrument unit 19 described later. Also in the second performance device 11-2, when the sound generation timing detection process (step 407) is completed, the CPU 21 executes a parameter communication process (step 408).

  Next, processing executed in the musical instrument unit according to the present embodiment will be described. FIG. 9 is a flowchart showing an example of processing executed in the musical instrument unit according to the present embodiment. The CPU 12 of the musical instrument unit 19 executes initialization processing including clearing data in the RAM 15, clearing an image on the screen of the display unit 16, clearing the sound source unit 31, and the like (step 901). Next, the CPU 12 executes a switch process (step 902). In the switch process, for example, the following process is executed.

In accordance with the switch operation of the input unit 17, the CPU 12 generates a table (pitch table) in which the difference value θ _Rd and the pitch are associated, and a table (tone table) in which the difference value θ _Ld and the timbre are associated. select. In the present embodiment, a plurality of pitch tables and tone color tables are prepared and stored in the RAM 15. The CPU 12 can select one of a plurality of tables according to the switch operation.

Further, in the present embodiment, the pitch table in which the range of the difference value θ _Rd d and the pitch are associated with each other, and the tone table in which the difference value θ _Ld and the timbre are associated with each other can be edited. It may be configured. For example, the CPU 12 displays the contents of the pitch table or the timbre table on the screen of the display unit 16 and displays the contents of the table. The player operates the switch and the numeric keypad to change the range of the difference value θ _Rd and the pitch. Alternatively, the range and tone color of the difference value θ _Ld are changed. The pitch table or tone color table whose value has been changed is stored in the RAM 15.

  Next, the CPU 12 determines whether the I / F 13 has newly received a note-on event (step 903). If it is determined Yes in step 903, the CPU 12 executes a sound generation process (step 904). In the sound generation process, the CPU 12 outputs the received note-on event to the sound source unit 31. The sound source unit 31 reads ROM waveform data in accordance with the tone color indicated in the note-on event. The speed at which the waveform data is read depends on the pitch included in the note-on event. The tone generator 31 multiplies the read waveform data by a coefficient according to the volume data (velocity) included in the note-on event to generate musical sound data of a predetermined volume level. The generated musical sound data is output to the audio circuit 32, and finally a predetermined musical sound is generated from the speaker 35.

  After the sound generation process (step 904), the CPU 12 executes a parameter communication process (step 905). In the parameter communication process, for example, the pitch table data and the timbre table data selected in the switch process (step 902) are transmitted from the infrared communication device 33 to the performance device main body 11 via the I / F 13 in accordance with an instruction from the CPU 12. Sent. In the performance apparatus main body 11, when the infrared communication device 24 receives the data, the CPU 21 receives the data via the I / F 27 and stores it in the RAM 26 (step 308 in FIG. 3).

In the present embodiment, the first performance device main body 11-1 can obtain the difference value θ _Rd based on the geomagnetic sensor value of its own geomagnetic sensor 22, while the second performance device main body 11. It is necessary to obtain the difference value θ _Ld by receiving the geomagnetic sensor value obtained at −2. Similarly, the second performance device main body 11-2 can obtain the difference value θ _Ld based on the geomagnetic sensor value of its own geomagnetic sensor 22, while the second performance device main body 11-1 obtains the geomagnetism. It is necessary to receive the sensor value and obtain the difference value θ _Rd .

Therefore, in the parameter communication process of the first performance device main body 11-1, the first reference offset value θ _RP and the first offset value θ _R are transmitted to the musical instrument unit 19, and the second reference offset value. θ _LP and the first offset value θ _L are received from the instrument unit 19. Similarly, in the parameter communication process of the second performance device main body 11-2, the second reference offset value θ _LP and the second offset value θ _L are transmitted to the musical instrument unit 19, and the first reference offset value is transmitted. The value θ _RP and the first offset value θ _R are received from the instrument unit 19. Parameter communication processing instrument 19, received from the first performance apparatus 11-1, the first reference offset value theta _RP and the first offset value theta _R is, the second performance apparatus 11-2 The second reference offset value θ _LP and the second offset value θ _L transmitted and received from the second performance device main body 11-2 are transmitted to the first performance device main body 11-1.

  When the parameter communication process (step 905) ends, the CPU 12 executes other processes, for example, an update of an image displayed on the screen of the display unit 16 (step 906).

  FIG. 15 and FIG. 16 are diagrams showing examples when the performer holds the first performance device main body 11-1 and the second performance device main body 11-1 in their respective hands and shakes one of them. is there. In FIG. 15 and FIG. 16, the performance apparatus main body shown by the solid line is swung down or raised while the performance apparatus main body shown by the broken line is maintained in that position. In these examples, both the first performance device main body 11-1 and the second performance device main body 11-2 are turned on in the same direction, and the first reference setting process and the second A reference setting process is performed.

In the example shown in FIG. 15, the second performance device main body 11-2 is maintained in the direction of the angle θ _Ld such that −180 ° ≦ θ _Ld <−θ1. On the other hand, the first performance device main body 11-1 is swung down or up by the performer in the direction of an angle θ _Rd such that θ2 ≦ θ _Rd <180 °. In this case, the first musical instrument main body 11-1 is shaken, so that the piano is a timbre according to the direction of the second musical instrument main body 11-2, and in the direction of the first musical instrument main body 11-1. Accordingly, a musical tone of C (do) having a pitch corresponding to the pitch is generated.

Similarly, in the example shown in FIG. 16, the first performance device main body 11-1 is maintained in the direction of the angle θ _Rd such that −θ2 ≦ θ _Rd <−θ1. On the other hand, the second performance device main body 11-2 is swung down or raised by the performer in a direction of an angle θ _Ld such that 0 ° ≦ θ _Ld <θ1. In this case, the trumpet which is a tone according to the direction of the 2nd performance apparatus main body 11-2 is shaken by the 2nd performance apparatus main body 11-2, and the 1st performance apparatus main body 11-1 is changed. The musical sound of F (Fa), which is the pitch according to the direction, is generated.

  In the present embodiment, the CPU 21 of the first performance device main body 11-1 and the second performance device main body 11-2 sends the musical instrument unit 19 to the sounding timing acquired based on the acceleration sensor value of the acceleration sensor 22. A note-on event is sent to it. In addition, the CPU 21 of the first performance device main body 11-1 performs the first performance when the reference direction of the first performance device main body 11-1 and the first performance device main body 11-1 are swung. A first difference value indicating an angle formed with the axial direction of the apparatus main body 11-1 is calculated, and a pitch of a musical sound to be generated is determined based on the first difference value. In addition, the CPU 21 of the second performance device main body 11-2 performs the second performance when the reference direction of the second performance device main body 11-2 and the second performance device main body 11-2 are swung. A second difference value indicating an angle formed with the axial direction of the apparatus main body 11-2 is calculated, and a pitch of a musical sound to be generated is determined based on the second difference value.

  Thus, according to the present embodiment, the pitch is determined by the axial direction of the first performance device main body 11-1, and the timbre is determined by the axial direction of the second performance device main body 11-2. It is determined. Therefore, the performer can generate a musical tone having a desired pitch and a desired tone color by changing the directions of the performance apparatus main bodies 11-1 and 11-2.

  In a preferred embodiment, the infrared communication device 24 of the first performance device main body 11-1 transmits the first difference value and receives the second difference value. Therefore, the CPU 21 of the first performance device main body 11-1 generates a note-on event that instructs the pitch based on the first difference value and the sound generation based on the timbre based on the second difference value. In addition, the infrared communication device 24 of the second performance device main body 11-2 transmits the second difference value and receives the first difference value. Therefore, the CPU 21 of the second performance device main body 11-2 also generates a note-on event that instructs the pitch based on the first difference value and the sound generation based on the timbre based on the second difference value. As described above, according to the present embodiment, a note-on event including information indicating the tone color and pitch is received from each of the first performance device main body 11-1 and the second performance device main body 11-2. It can be transmitted to the unit 19.

  In the present embodiment, the CPU 21 of the performance device main body 11 determines the pitch of the musical sound so that the pitch is uniformly increased or decreased as the difference value increases. For example, the pitch of a keyboard instrument changes uniformly as it advances in a certain direction. Therefore, the performer can intuitively generate a musical tone having a desired pitch.

  Further, in the present embodiment, the CPU 21 of the performance apparatus main body 11 specifies the pitch of the musical tone to be generated with reference to the pitch table in which the range of the first difference value is associated with the pitch. Thereby, the pitch of the musical tone to be generated can be obtained without requiring a complicated calculation.

  Further, in the present embodiment, the CPU 21 of the performance device main body 11 specifies the tone color of the musical tone to be generated with reference to the tone color table in which the range of the second difference value is associated with the pitch. Thereby, the tone color of the musical tone to be generated can be obtained without requiring complicated calculation.

  In the present embodiment, the CPU 21 of the performance device main body 11 acquires an offset value that is an angle formed by the magnetic north direction and the axial direction of the performance device main body 11 based on the sensor value of the geomagnetic sensor 22. Further, the CPU 21 obtains in advance a reference offset value that is an angle formed by the direction of magnetic north and the axial direction of the performance apparatus main body 11 at the time of setting as a value indicating the reference azimuth. Then, the CPU 21 calculates the difference between the offset value and the reference offset value as the difference value. As a result, the performer can generate a musical tone having a desired pitch and tone color in a desired direction.

  Furthermore, in the present embodiment, the CPU 21 of the performance device main body 11 has a second threshold value that is smaller than the first threshold value after the acceleration sensor value of the acceleration sensor 23 exceeds the predetermined first threshold value α. A note-on event is generated with a timing smaller than β as a sound generation timing, and the note-on event is transmitted to the instrument unit 19. Therefore, a musical sound can be generated at the moment when the player strikes the virtual drum surface with a stick.

  In the present embodiment, the CPU 21 of the performance device main body 11 detects the maximum value of the sensor value of the acceleration sensor 22 and calculates the volume level according to the maximum value. Then, the CPU 21 generates a note-on event indicating the calculated volume level. Therefore, it is possible to generate a musical tone with a volume according to the sharpness of the performance device main body 11 by the performer.

  Next, a second embodiment of the present invention will be described. In the second embodiment, the volume level (velocity) is determined according to which range the maximum value of the acceleration sensor value belongs. In the first embodiment, in step 801, the volume level (velocity) is determined based on, for example, the volume level Vel = a · Amax (≦ Vmax). In the second embodiment, in step 801, the volume level is determined as follows.

  The RAM 26 stores a table in which the maximum value range of the acceleration sensor value Amax is associated with the volume level (velocity). FIG. 14 is a graph for explaining the correspondence between the maximum value range and the volume level (velocity). In the present embodiment, no musical sound is produced unless at least the acceleration sensor value exceeds α. Therefore, as shown in FIG. 14, the following volume levels Vel are associated with the range defined by the threshold value α of the acceleration sensor value and the boundary values A1 to A3 (α <A1 <A2 <A3).

α <Amax ≦ A1: Vel = V1
A1 <Amax ≦ A2: Vel = V2
A2 <Amax ≦ A3: Vel = V3
A3 <Amax: Vel = Vmax
(However, V1 <V2 <V3 <Vmax)

  For example, when the performance apparatus body 11 is swung and an acceleration sensor value as indicated by the curve 1401 is indicated, the CPU 21 refers to the table of the RAM 26 to acquire the volume level V1. When an acceleration sensor value as indicated by the curve 1402 is indicated, the CPU 21 refers to the table and acquires the volume level V3.

  According to the second embodiment, the CPU 21 acquires the volume level based on which range of the table the maximum value Amax belongs to. Therefore, an appropriate volume level can be obtained without requiring multiplication.

  The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

  In the embodiment, the CPU 21 of the performance device main body 11 detects an acceleration sensor value when the performer shakes the performance device main body 11, and detects a sound generation timing based on the acceleration sensor value. Further, the CPU 21 of the performance apparatus main body 11 calculates an offset value based on the sensor value of the magnetic sensor, and determines the pitch and tone color of the musical sound to be generated according to the offset value. Thereafter, the CPU 21 of the performance apparatus main body 11 generates a note-on event including a pitch and a timbre at the sound generation timing, and transmits it to the musical instrument unit 19 via the I / F 27 and the infrared communication device 24. On the other hand, when the instrument unit 19 receives a note-on event, the CPU 12 outputs the received note-on event to the sound source unit 31 to generate a musical sound. The above configuration is suitable when the musical instrument unit 19 is not a dedicated machine for generating musical sounds, such as a personal computer or game machine to which a MIDI board or the like is attached.

  However, the processing in the musical instrument main body 11 and the sharing of the processing in the musical instrument unit 19 are not limited to those in the above embodiment. For example, the performance device main body 11 may be configured to acquire a reference offset value, an offset value, and an acceleration sensor value and transmit them to the musical instrument unit 19. In this case, the sound generation timing detection process (FIG. 7) and the note-on event generation process (FIG. 8) are executed in the instrument unit 19. The configuration described above is suitable for an electronic musical instrument in which the musical instrument unit 19 is a dedicated machine for generating musical sounds.

  In the present embodiment, the performance device main body 11 and the musical instrument unit 19 are communicated with infrared signals using infrared communication devices 24 and 33. However, the present invention is not limited to this. Absent. For example, the percussion instrument main body 11 and the musical instrument unit 19 may perform data communication by other wireless communication, or may be configured to perform data communication by wire using a wire cable.

  In the above embodiment, the first difference value and the second difference value are transmitted and received between the performance device main body 11 and the musical instrument unit 19 in the data communication using the infrared communication devices 24 and 33. Yes. However, the present invention is not limited to this. For example, the first performance device main body 11-1 transmits the first difference value directly to the second performance device main body 11-2, while the second performance device main body 11-2 transmits the second difference value. It may be configured to transmit directly to the first performance device main body 11-1. Further, in the embodiment, the CPU 21 of the performance apparatus main body 11 has an acceleration sensor value that exceeds a predetermined first threshold value α and then becomes smaller than a second threshold value β that is smaller than the first threshold value. The musical instrument unit 19 is instructed to generate a sound with the generated timing as the sound generation timing. However, the sound generation timing is not limited to that described above, and the sound generation timing may be set when the acceleration sensor value reaches the maximum value or when a predetermined time elapses after reaching the maximum value.

10 Electronic musical instruments 11-1, 11-2 Performance device main body 12 CPU
13 I / F
14 ROM
15 RAM
16 Display Unit 17 Input Unit 18 Sound System 19 Musical Instrument Unit 21 CPU
22 Geomagnetic sensor 23 Acceleration sensor 24 Infrared communication device 25 ROM
26 RAM
27 I / F
31 Sound Source 32 Audio Circuit 33 Infrared Communication Device

Claims (9)

Each holding member extending in the longitudinal direction for the performer to hold by hand;
An acceleration sensor disposed in the holding member;
A magnetic sensor disposed in the holding member;
A performance system comprising a first performance device main body and a second performance device main body, and a control means for giving a sound generation instruction to a music sound generation means for generating a predetermined music sound,
The control means of the first performance device body and the second performance device body are:
A sound generation instruction means for giving a sound generation instruction to the music sound generation means at the sound generation timing acquired based on the acceleration sensor value;
The first performance device main body includes:
While having a first difference value calculation means for obtaining a first difference value indicating an angle formed by a preset reference direction and an axial direction of the holding member based on a sensor value of the magnetic sensor ,
The control means of the first performance device main body includes a pitch determination means for determining a pitch of the musical tone to be generated based on the first difference value obtained by the first difference value calculation means. Have
The second performance device main body is:
Based on the sensor value of the magnetic sensor, there is provided a second difference value calculating means for acquiring a second difference value indicating an angle formed by a preset reference direction and an axial direction of the holding member. ,
The control means of the second performance device main body has tone color determining means for determining a tone color of the tone to be generated based on the second difference value obtained by the second difference value calculating means. A performance system characterized by The first performance device main body and the second performance device main body each have communication means,
The communication means of the first performance device main body transmits the first difference value and receives the second difference value,
The control means of the first performance device main body has timbre determining means for determining a tone color of the musical tone to be generated based on the received second difference value;
The communication means of the second performance device main body transmits the second difference value and receives the first difference value,
The said control means of the said 2nd performance apparatus main body has a pitch determination means which determines the pitch of the musical tone which should be sounded based on the received said 1st difference value. The performance system according to 1.   The pitch determination means determines the pitch of the musical tone so that the pitch increases or decreases uniformly as the first difference value increases. 2. The performance system according to 2.   The pitch determination means determines the pitch of the musical tone with reference to a table stored in a storage device in which the range of the first difference value is associated with the pitch. The performance system according to claim 3.   2. The timbre determining means determines a timbre of the musical tone with reference to a table stored in a storage device and associated with the range of the second difference value and the timbre. Or the performance system of 2.   The first difference value calculating means and the second difference value calculating means acquire an offset value that is an angle formed by the magnetic north direction and the axial direction of the holding member based on the sensor value of the magnetic sensor. A reference offset value that is an angle formed by the direction of the magnetic north and the axial direction of the holding member at the time of setting is obtained as a value indicating the reference azimuth, and the first difference value and the second difference value The performance system according to any one of claims 1 to 5, wherein a difference between the offset value and the reference offset value is calculated.   The sound generation instructing means of the control means of the first performance apparatus main body and the second performance apparatus main body has a value that the acceleration sensor value exceeds a predetermined first threshold value and is smaller than the first threshold value thereafter. The performance system according to any one of claims 1 to 6, wherein a sound generation instruction is given to the musical sound generating means using a timing that is smaller than a threshold of 2 as a sound generation timing. The control means has a volume level calculating means for detecting a maximum value of the acceleration sensor value and calculating a volume level according to the maximum value;
8. The sound generation instruction means gives a sound generation instruction to the tone generation means at the sound generation timing at the sound volume level calculated by the sound volume level calculation means. The performance apparatus as described in the paragraph. A performance system according to any one of claims 1 to 8,
A musical instrument unit comprising the musical sound generating means,
An electronic musical instrument, wherein each of the performance device and the musical instrument unit includes a communication unit.

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