JP4459484B2 - Performance control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a performance control apparatus that detects an event by a user and uses it as performance control data, and advances the performance of arbitrary music data based on the event control data.
[0002]
[Prior art]
The applicant proposes a keyboard performance auxiliary function configuration that causes the corresponding musical sound in the song data to be pronounced in accordance with the strength of the key press at each key pressing timing, so that the performance of the song data proceeds. It was.
[0003]
An electronic musical instrument having such a keyboard performance assist function can be played just by striking an arbitrary keyboard along with a melody, and anyone can easily perform.
[0004]
More recently, we are also studying a configuration that allows the tempo and strength to be reflected in the playback of a song by striking the keyboard one beat at a time, and according to this, tap the keyboard in the mood of the conductor. As a result, a system in which the music is played in accordance with the music is realized.
[0005]
[Problems to be solved by the invention]
However, all the above configurations are based on the assumption that the keyboard is struck, and it has been difficult to fully feel the conductor's feeling in such a keyboard performance. In other words, in the key pressing operation of the keyboard, it was impossible to simulate the original experience of a conductor who conducts the entire performance by swinging a conductor.
[0006]
For this reason, a configuration was proposed in which the appearance (movement) of the user waving the baton is optically captured, and the tempo is extracted from the entire movement of the baton. However, the configuration for optically capturing such a motion is generally large, and the analysis of the motion has problems such as requiring complicated processing.
[0007]
On the other hand, there is also a proposal of a configuration in which the baton itself is provided with an acceleration sensor, and the speed and acceleration of movement when the baton is shaken is converted into the tempo and strength of the song. However, since the command stick provided with the acceleration sensor has a configuration in which the detection signal is transmitted by wire, the wire may impair the degree of freedom of the command operation. In order to avoid this, if the wireless transmission configuration is used, the baton must be equipped with such a wireless configuration in addition to the acceleration sensor. There is also a problem that it becomes difficult to operate.
[0008]
In addition, since the baton itself is equipped with a detection unit, there is a risk that it will hit a nearby object and be damaged when a large command operation is performed. In such a case, it is necessary to send it out for repair, and since the baton itself is a dedicated device, it is difficult to obtain a substitute immediately.
[0009]
The present invention was devised in view of the above-mentioned problems, and it is possible to enjoy a full-fledged conductor's sense with a simple configuration and to have no problems as described above when a conductor is provided with a sensor. It is intended to provide the configuration of the control device.
[0010]
[Means for Solving the Problems]
  The configuration of the present invention is a performance control apparatus for performing performance of arbitrary song data according to predetermined performance control data,
  A detection unit that detects the electromagnetic wave from an operating device that can be arbitrarily moved by the user and that outputs an electromagnetic wave with strong directivity;
  Provided separately from the detector, electromagnetic waves coming from a predetermined direction among electromagnetic waves coming from the operating deviceAn electromagnetic shielding unit for shielding;
  Measuring means for measuring a time interval from when the electromagnetic wave is detected by the detection unit to when it is detected next;,
  The measured value measured by the measuring means is converted into tempo data corresponding to the measured value.A conversion unit that converts and outputs
It has the basic feature of having.
[0011]
  According to the above configuration, when the user swings using the operation device as a command stick, an electromagnetic wave having a strong directivity is emitted therefrom, and this is detected by the detection unit. In that case, there exists an electromagnetic wave shielding part in the electromagnetic wave detection area of this detection part, and electromagnetic waves are shielded outside from the installation position. Therefore, by swinging the operating device in the direction including the installation position of the electromagnetic wave shielding unit,Measuring meansThus, the time from the timing at which a certain electromagnetic wave is detected (or the timing at which it is interrupted) to the timing at which the next electromagnetic wave is detected (or the timing at which the next interruption is detected), that is,Time intervalIs measured (or the average of the measured times is calculated, etc.)Tempo is measuredTherefore, in the conversion unit,Time intervalBased on theWave tempo dataIs output as a part of the performance control data. still,The timing at which the electromagnetic wave is detected and the timing at which it is interrupted are detected by the detection unit, and when a separate time interval is measured by the measurement means, the conversion unit uses the time interval as a command stick. It is also possible to measure the shaking speed of the shaker, that is, the strength (velocity) of the song data to be played. TheFor detecting the velocity, a more accurate value can be obtained by correcting by the tempo. That is, the data to be played has a basic tempo, and based on this, the speed at which the controller is shaken is detected and converted to the velocity of the song data to be played.
[0012]
  If such a configuration is provided as a part of the configuration of an electronic keyboard instrument or the like, the shelf plate itself constitutes an electromagnetic wave blocking unit by installing the detection unit below the shelf plate on which the keyboard is installed. Will do. Therefore, the user stands in front of the shelf of the electronic keyboard instrument and performs the operation of swinging the operating device as a command stick, until the operating device itself is shaken down and swung up again. The electromagnetic wave emitted from the operating device is detected by a detection unit under the shelf (electromagnetic wave blocking unit),With measuring meansThe time interval will be measured. The measurement result is converted by the conversion unit as described above, and a part of the performance control data.(tempo)Will be output.
[0013]
  In the above configuration, the range in which the operating device is swung may be different from the relationship such as the height of the user's back, for example, a person who is short will have a longer time to swing down below the shelf, The electromagnetic wave detection area becomes larger than that of a tall person. Then, depending on the height, even if the controller is shaken in the same way, for example, the abovetempoWill be detected as different values. In that case, adjust the installation position of the electromagnetic wave shielding unit and the position of the detection unit (lowering the installation position of the electromagnetic wave shielding unit for short people, or raising the detection unit on the contrary), The bug is solved. That is, the relative distance between the detection unit and the electromagnetic wave shielding unit may be changed, and the distance may be adjusted as necessary.
[0014]
On the other hand, when light such as infrared light, visible light, or ultraviolet light is used as an electromagnetic wave having strong directivity, the above operating device is an existing optical pointing device (used to point a predetermined place with laser light etc. with OHP) Etc.) can be used and can be easily obtained (in that case, the detection unit is configured by a light receiving element). In addition, the operation device itself does not have a detection structure, and is detected only by the above-described detection unit separately installed (for example, in a stationary state). Do not hit the detector and damage the detector itself. In addition, there is no obstacle to the operation as in the case of wired operation, and it is not necessary to provide the operation device itself with a wireless configuration for transmitting the detection result, so that it is very light and easy to operate.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Example 1
1 is a perspective view showing an external configuration of an electronic organ 100 equipped with a performance control device configuration according to one embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a basic circuit diagram of the electronic organ. 4 is a block diagram showing functional blocks of the present invention. The electronic organ 100 is provided with a keyboard performance assisting function that causes the corresponding musical sound in the song data to be pronounced in accordance with the strength of the key depression at each key depression timing, and the performance of the song data proceeds. In addition, the present configuration provides a trigger in place of the key depression.
[0016]
As shown in FIG. 3, the electronic organ 100 includes a CPU (Central Processing Unit) 111, a RAM (Random Access Memory) 112, a ROM (Read Only Memory) 113, and a key scan circuit 114a on a system bus 110. A connected keyboard unit 114, a panel operation unit 115 connected via a panel scan circuit 115a, a display unit 116 connected via a display control circuit 116a, an FDD unit 117 connected via an FDD control circuit 117a, A tone generation circuit 118 is connected to each other, and various commands and data are transferred to these devices through the bus 110. The musical sound generation circuit 118 is electrically connected to a sound system 120 such as a D / A conversion circuit 119 for converting the generated musical sound into an analog, an amplifier for amplifying the musical sound, and a speaker for generating sound externally. Yes. The musical sound generation circuit 118, the D / A conversion circuit 119, and the sound system 120 constitute a musical sound generation unit 16 (see FIG. 4 described later).
[0017]
The CPU 111 is directly connected to a light receiving unit 1a, which will be described later, which constitutes an electromagnetic wave detection unit, via an A / D conversion circuit 130. A trigger signal in place of key depression is used as a keyboard performance assist function of the electronic organ 100. Will be given to.
[0018]
The CPU 111 controls each unit of the electronic organ 100 including the configuration of the present invention in accordance with a control program stored in the program memory storage unit of the ROM 112, and also stores application programs stored in the program memory storage unit. This is a configuration in which the RAM 112 is used as a work area and data processing is performed using various fixed data stored in the ROM 113 as necessary.
[0019]
The RAM 112 is used to store apparatus status information, as a work area for the CPU 111, and to be used as an editing buffer and a delayed data buffer described later. Various registers and flags for controlling the electronic organ 100 are defined in the RAM 112, and the RAM 112 is accessed by the CPU 111 via the system bus 110.
[0020]
As described above, the ROM 113 stores a program for controlling the entire electronic organ 100, and various fixed data (including demo data) used by the CPU 111. The ROM 113 constitutes a part of the music data storage unit 12 described later together with the FDD unit 117.
[0021]
The keyboard unit 114 is composed of the keyboard of the electronic organ 100, and includes a plurality of keyboards and a keyboard switch that opens and closes in conjunction with key depression and key release. The key scan circuit 114a interposed between the keyboard unit 114 and the system bus 110 checks the state of the keyboard switch, and generates touch data indicating the strength (speed) of the keyboard touch from a signal indicating ON / OFF thereof. At the same time, it outputs ON or OFF information and its keyboard number. The ON / OFF information, keyboard number, and touch data are sent to the CPU 111 via the system bus 110 as key press data.
[0022]
In the keyboard performance assist function, the data is sent from the keyboard unit 114 every time the key is pressed by the key pressing operation of the normal keyboard unit 114, and the corresponding musical sound in the music data is the strength of the key pressed. The music data is played in accordance with the music data and the performance of the music data is advanced.
[0023]
The panel operation unit 115 is provided with various switches such as a power switch and a tone color selection switch. The panel scan circuit 115a interposed between the panel operation unit 115 and the system bus 110 checks the set / reset state of each switch provided in the panel operation unit 115, and obtains the panel switch data in the ON state. This is detected and sent to the CPU 111.
[0024]
The display unit 116 is connected to the system bus 110 via a display control circuit 116a. Under the control of the CPU 111, various operation states of the panel operation unit 115, operation states of the electronic organ 100, a music selection unit described later. In this configuration, the titles of 13 selected songs are displayed.
[0025]
In the present embodiment, the FDD unit 117 is constituted by a floppy disk drive (floppy is a registered trademark), and is connected to the system bus 110 via an FDD control circuit 117a. Under the control of the CPU 111, the music data of the performance music stored in the FDD is read and written. Of course, not such an FDD configuration, but a CD-ROM drive, various card-type storage devices (flash memory card, compact flash card (compact flash is a registered trademark), SD card (SD card is a registered trademark), memory stick ( Needless to say, it may be composed of (registered trademark), MO, etc.).
[0026]
FIG. 4 is a functional block diagram of the performance control apparatus according to the present invention incorporated in the keyboard performance assisting configuration of the electronic organ 100. First, as shown in the figure, the keyboard performance assisting configuration includes a performance control unit 11, a song data storage unit 12, a song selection unit 13, a performance start / stop instruction unit 14, a melody / accompaniment performance unit 15, and the like. The musical tone generator 16 is included.
[0027]
In the keyboard performance assisting configuration, the keyboard performance is selected by the song selection unit 13 constituted by the panel operation unit 115 from the song data stored in the song data storage unit 12 constituted by the FDD unit 117 or the ROM 113. When music data to be played by the auxiliary function is selected, the music data is sent to the performance control unit 11 constituted by the CPU 111. When the performance start / stop instruction unit 14, which is also composed of the panel operation unit 115, instructs the performance control unit 11 to start performance, the song data is sent to the melody / accompaniment performance unit 15. .
[0028]
At the time of transmission of this data, normally, the key pressing data is sent from the keyboard unit 114 to the melody / accompaniment performance unit 15, and the music data is sent to the melody by the performance control unit 11 in accordance with the timing of the key pressing. The musical sound is output to the accompaniment performance section 15 and the musical sound is output from the musical sound generation section 16 composed of the musical sound generation circuit 118, the D / A conversion circuit 119 and the sound system 120. That is, at each timing of key depression, the corresponding musical sound in the song data is pronounced according to the strength of the key depression at the tempo detected when the key is depressed, and the performance of the song data is advanced. Just hit the keyboard to the melody and you can play.
[0029]
  In this configuration, infrared light output from the baton 201 (see FIG. 2) constituting the operating device, instead of executing the keyboard performance assist function by inputting key pressing data, by operating the panel operating unit 115. Is received by the light receiving unit 1a constituting the detection unit, and the next infrared ray is detected from the timing at which the first measurement unit (not shown) detects a certain infrared ray (or the interruption timing) in the detection signal. The time until the detection timing (or the timing when the next break is detected), that is, the first time interval is measured (or the average of the measured times is calculated, etc.), the conversion unit In 3a, the tempo of the performance, the timing at which infrared rays are detected, and the timing at which it is interrupted are detected by the detection unit (light receiving unit 1a), and the second measurement unit (not shown) The second time interval is measured by the above, and in the conversion unit 3a, the speed at which the baton 201 swings, that is, the strength of the song data to be played (velocity data), based on both time intervals, It is obtained as data necessary for executing the keyboard performance assist function. Thus, velocity data and tempo data are to be used as a trigger signal instead of the key depression data.The description for obtaining velocity data according to the present embodiment has nothing to do with the configuration related to the claims.
[0030]
As shown in FIGS. 1 and 2, the light receiving unit 1a is installed at the lower part of the shelf board of the keyboard unit 114 of the electronic organ 100. Therefore, the shelf board has an infrared light blocking unit 2a that blocks the infrared light. Will be composed. Due to the presence of the infrared light blocking section 2a, the light receiving area (electromagnetic wave detection area) of the light receiving section 1a is limited at the upper part in the vertical direction. Therefore, as shown in FIG. 2, when the user stands in front of the electronic organ 100 and swings the command bar 201 with the sense of the conductor holding the command bar 201, the command bar 201 is swung down. When the infrared light outputted from the light receiving area enters the light receiving area, it is detected by the light receiving section 1a, and when the infrared light from the baton 201 is moved away from the light receiving area, it is not detected by the light receiving section 1a. .
[0031]
Therefore, the detection result is as shown in FIG. That is, the rising edge of the light reception signal when light is received (S in the figure).₁) And the point where the light reception signal is not detected due to light reception interruption (S in the figure)₂) Is a detection signal (detection signal S of a switch that operates at an early point after the key is pressed) detected by two keyboard switches provided on each keyboard of the keyboard unit 114 having a touch detection function.₁And the detection signal S of the switch that operates when the key-pressing operation proceeds₂).
[0032]
  Thus, the light reception timing (S in the figure)₁) And the timing when it was interrupted (S in the figure)₂) Is detected by the light receiving unit 1a. Therefore, the aboveFirst measurement unit, The time between the light reception timing and the next light reception timing (T in the figure)₁, T ’₁)ButmeasurementIsByBy the conversion unit 3a,The performance tempo is determined, and from the conversion unit 3athat isIs output. T₁And T ’₁It is also good to take the average of the tempo.
[0033]
    Each light receiving time T₂, T ’₂(Ie S₁And S₂Time between points)In the second measuring unitBy measuring, the speed at which the baton 201 swings is determined. In this embodiment, since the speed at which the baton 201 swings may be affected by the speed of the tempo, the speed of the baton 201 is set at the tempo calculated as described above.It is corrected.As a result, the strength (velocity) of the music data to be played is calculated and output as the performance control data from the conversion unit 3a. If the baton 201 is vigorously shaken, it is detected that the baton 201 is shaken at a higher speed, and therefore the calculated velocity becomes stronger. That is, the above calculated velocity affects the velocity data of each note data in the music data. If the calculated velocity is a large value, the velocity data in the note data is also largely corrected, and if the calculated velocity is a small value, it is corrected to be small and the sound source is controlled.
[0034]
Note that the time between the light reception timing and the next light reception timing is T₁And T_'1, And T₂And T_'2This is because two registers are prepared for each, and each measurement time is recorded there alternately. In FIG. 6 described later, the light receiving time T₂T with the count stop_ThreeIn this case, when it is detected that the baton 201 has stopped for a predetermined time or longer, the operation stop time of the baton 201 is set in order to stop the performance there. It is to be measured.
[0035]
In the above configuration, since the height at which the command stick 201 can be swung down differs depending on the height of the user who shakes the command stick 201, the infrared light detected in the light receiving area of the light receiving unit 1a is different. Light reception time T₂And T_'2Will be affected by the height of the user (actually it will also be affected by the person's reach), which may result in different velocities. Therefore, in this embodiment, as shown in FIG. 2, the light receiving portion 1a can be moved up and down so that the light receiving area can be adjusted.
[0036]
That is, when the user who shakes the baton 201 is tall, the light receiving unit 1a is moved downward to widen the light receiving area. If the user is low, the light receiving area is narrowed by moving in the opposite direction. As a result, the velocity calculated can be adjusted. However, since the light receiving area is determined by the relative distance between the infrared light blocking unit 2a and the light receiving unit 1a as described above, if the infrared light blocking unit 2a is configured to move, move it. It is also possible to adjust the light receiving area.
[0037]
FIG. 6 is a flowchart showing a processing flow in the present embodiment. As shown in the figure, first, it is detected by the converter 3a whether or not light is received by the light receiver 1a (step S101). As long as light reception is not detected (step S101; No), it is repeated.
[0038]
  When light reception is detected (step S101; Yes),By the first and second measuring units,T₁And T₂Counting (time measurement) is started (step S102).
[0039]
In the next step, stoppage of light reception (whether light detection is lost) is detected (step S103). Unless the stop of light reception is detected (step S103; No), this is repeated.
[0040]
  When stop of light reception is detected (step S103; Yes),By the second measuring unitT₂Stop counting and T_ThreeIs started (step S104), and the T₂Is counted on the RAM 112 (step S105).
[0041]
It is detected again whether or not light is received by the light receiving unit 1a (step S106). If no light is detected (step S106; No), the T_ThreeIt is checked whether the count time exceeds a preset time (END value), or whether an instruction to stop the processing (End instruction) is given by the user operation to the panel operation unit 115 (step) S107). If the END value has not been exceeded, or if the End instruction has not been made (step S107; No), the process returns to step S106. On the other hand, when the END value is exceeded or when the End instruction is given (step S107; Yes), the processing is terminated there.
[0042]
T_ThreeIf the count time exceeds the END value, no light is received for a predetermined time or more. In such a case, it is determined that the user stops the operation of shaking the baton 201, and the processing is continued. Will end.
[0043]
  On the other hand, when light reception is detected in the step S106 (step S106; Yes),By the first measuring unitT₁Stop counting,By the first and second measuring unitsT ’₁And T ’₂Is started (step S108). And the T₁Is counted on the RAM 112 (step S109).
[0044]
  This T₁Than the count timeIn the conversion unit 3aA tempo is calculated (step S110). Next, the tempo value and T₂Than the count timeSimilarly in the conversion unit 3aA velocity is calculated (step S111).
[0045]
Based on the velocity data, processing equivalent to key-on detected by keyboard operation (switch detection signal S₂Output processing) is performed (step S112). The tempo value is rewritten by detecting the tempo value (step S113).
[0046]
Since the tempo and velocity data are obtained by the above processing, automatic accompaniment processing by the keyboard performance assist function is performed based on these data (automatic accompaniment processing is performed until the next key-on processing comes, step S114). . Thereafter, the process returns to step S103.
[0047]
According to the above configuration of the present embodiment, infrared light is emitted from the command stick 201 when the user shakes the command stick 201, which is detected by the light receiving unit 1a. At that time, there is an infrared light blocking unit 2a in the light receiving area (electromagnetic wave detection area) of the light receiving unit 1a, and the infrared light reception is blocked outside the installation position. Accordingly, when the baton 201 is swung in a direction including the installation position of the blocking unit 2a, the detection timing of light reception and the timing at which it is interrupted are detected.
[0048]
  Then, aboveFirst measurement unit, By measuring the time from a certain light reception timing (or the timing at which the interruption occurred) to the next light reception timing (or the timing at which the next interruption was detected) (or by calculating the average of those measured times) ),By the conversion unit 3a,The performance tempo is determined, andSecond measuring unitIn the above measurement of the light reception time,In the conversion unit 3a,The speed at which the baton 201 swings, that is, the strength (velocity) of the song data to be played, is determined and output as part of the performance control data.
[0049]
(Example 2)
FIG. 7 is an explanatory diagram showing another configuration of the embodiment in which the configuration of the present invention having the infrared light blocking unit 2b can be applied even to an instrument or the like that does not have a configuration such as a shelf such as the keyboard unit 114. is there. As shown in the figure, the light receiving part 1b is installed in the vertical wall part in the inner back | inner part, Comprising: It is the structure which has the eaves-type interruption | blocking part 2b with a U-shaped cross section. Therefore, by placing such a configuration in an arbitrary place, the same effect as in the above embodiment can be obtained.
[0050]
In this configuration, the light receiving portion 1b can be moved up and down, but in this embodiment, the protruding portion of the blocking portion 2b can be moved in and out as shown in the drawing. The area can be adjusted. In the figure, only the configuration of the light receiving unit 1b and the blocking unit 2b is shown, and the conversion unit 3b and other configurations are the same as those in the above embodiment, and are omitted.
[0051]
It should be noted that the performance control device of the present invention is not limited to the above-described embodiments, and it is needless to say that various changes can be made without departing from the gist of the present invention.
[0052]
【The invention's effect】
  As described above, claims 1 to 5 of the present invention.4According to the configuration of the performance control device described, a simple configuration makes it possible to experience a full-fledged conductor's sense, and it is difficult to operate the command rod as in the configuration in which the sensor is provided on the command rod. There are excellent effects such as that the stick itself is heavy, the entire leader pole is large, and that the substitute is not easily obtained when the leader pole is damaged.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an external configuration of an electronic organ 100 equipped with a performance control device configuration according to an embodiment of the present invention.
FIG. 2 is a side view thereof.
FIG. 3 is a basic circuit diagram of the electronic organ.
FIG. 4 is a block diagram showing functional blocks of the present invention.
FIG. 5 is a signal waveform diagram showing a detection result in the light receiving unit 1a.
FIG. 6 is a flowchart showing a processing flow in the present embodiment.
FIG. 7 is an explanatory view showing a configuration of another embodiment of the present invention.
[Explanation of symbols]
1a, 1b Light receiving part
2a, 2b Infrared light blocking part
3a, 3b converter
11 Performance controller
12 Song data storage
13 Song selection section
14 Performance start / stop instruction section
15 Melody / Accompaniment Performance
16 Musical sound generator
100 electronic organ
110 System bus
111 CPU
112 RAM
113 ROM
114 Keyboard
114a Key scan circuit
115 Panel operation unit
115a Panel scan circuit
116 display unit
116a Display control circuit
117 FDD section
117a FDD control circuit
118 Music generation circuit
119 D / A conversion circuit
120 sound system
130 A / D conversion circuit
201 Conductor

Claims (4)

In a performance control device that performs performance of arbitrary song data according to predetermined performance control data,
A detection unit that detects the electromagnetic wave from an operating device that can be arbitrarily moved by the user and that outputs an electromagnetic wave with strong directivity;
An electromagnetic wave blocking unit that is provided separately from the detection unit and blocks an electromagnetic wave coming from a predetermined direction among electromagnetic waves coming from the operation unit ,
Measuring means for measuring a time interval from when the electromagnetic wave is detected by the detection unit until it is detected next ;
A performance control apparatus comprising: a conversion unit that converts a measurement value measured by the measurement means into tempo data corresponding to the measurement value and outputs the tempo data . Performance control apparatus according to claim 1, wherein the relative distance between the detecting unit and the electromagnetic-wave blocking portion is variable. 3. The performance control device according to claim 1, wherein the electromagnetic wave shielding unit is configured by a keyboard shelf. The electromagnetic wave is an infrared, visible light, a light such as ultraviolet rays, and the detection unit, performance control apparatus according to claim 1 to 3 one, which is a light receiving element.

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