JP6384705B2 - Performance system, support device, performance device, performance method and program - Google Patents

Description

  The present invention uses a portable terminal such as a smartphone as a support device, for example, a performance system that supports the performance practice function by connecting the support device and the performance device without incurring high product costs while having versatility, The present invention relates to a support device, a performance device, a performance method, and a program.

  In a performance device called a keyboard instrument (electronic keyboard instrument), a light emitting element such as an LED is provided corresponding to each key of the keyboard, and is arranged at the position of the key to be pressed based on the song data read as the song progresses. A device having a so-called navigation function for turning on a light emitting element to guide a key to be played to a user is known. Note that a performance device having a navigation function is disclosed in Patent Document 1, for example.

JP 2001-134267 A

  By the way, performance devices with a product concept that children become familiar with music as educational toys, and adult beginner users who are unfamiliar with keyboard operation can enjoy keyboard performance casually, for users with a certain level of performance skill The device specifications are more limited than that, and it is an inexpensive product with only a navigation function.

  Since such a performance device has an inexpensive device configuration, it does not have an interface for importing favorite song data from an external memory, and is a song that one wants to play from among multiple types of song data stored in its own built-in memory. In many cases, the navigation function is executed by selecting. For this reason, the user gradually becomes unsatisfied and bored only with the built-in music, and is eager to practice the performance by executing a navigation function based on favorite music data imported from the outside.

  Therefore, the portable devices such as smartphones and tablet PCs that have become popular recently are used as support devices that support the performance practice function, and this support device is incorporated from the outside by linking with an inexpensive performance device that has only a navigation function. A system that supports a performance practice function by executing a navigation function based on favorite song data can be considered. In such a system, a support device (such as a portable terminal) and a performance device are supported by wireless connection or wired connection. A new connection method in consideration of versatility must be adopted so as not to depend on the model of the device, which causes a problem of incurring a high product cost of the performance device.

  The present invention has been made in view of the above-described circumstances, and a performance system and a support device for supporting a performance practice function by connecting a support device and a performance device without incurring high product costs while having versatility. An object of the present invention is to provide a performance device, a performance method, and a program.

  To achieve the above object, the present invention provides a performance system having a support device and a performance device, wherein the support device generates an enable signal for setting an enable period based on song data representing each sound constituting the song. And a generating means for generating a periodic waveform signal representing the pitch of each sound of the song, and an output means for outputting the generated enable signal and the periodic waveform signal from different channels, respectively. Receiving means for receiving an enable signal and a periodic waveform signal output from the support device, and obtaining a pitch from the received periodic waveform signal within an enable period set by the received enable signal. It has an acquisition means and a guide means for guiding a performance operator corresponding to the acquired pitch.

Further, the present invention provides a connected support apparatus performance apparatus for guiding the performance operators to be played based on the received enable signal and periodic waveform signal, the table to song data each sound constituting the songs Generating the enable signal for setting the enable period based on the generation means, and generating means for generating the periodic waveform signal representing the pitch of each sound of the music; and the generated enable signal and the periodic waveform signal on different channels, respectively. Output means for outputting from the above.

The present invention also Louis enable signal to set the enable period based on the music data representing each sound constituting the song, and the pitch of each note of the song to the support device for outputting the table to periodic waveform signal A receiving device for receiving an enable signal and a periodic waveform signal output from the support device; and a received periodic waveform within an enable period set by the received enable signal. An acquisition means for acquiring a pitch from a signal and a guide means for guiding a performance operator corresponding to the acquired pitch are provided.

  Further, the present invention is a performance system having a support device and a performance device, wherein the support device reproduces music data representing each sound constituting the music to generate an audio musical sound signal, and adds the music data to the music data. And a generating means for generating a periodic waveform signal representing the pitch of each sound of the music, and an output means for outputting the audio musical tone signal and the periodic waveform signal from different channels, respectively, Receiving means for receiving the audio tone signal and the periodic waveform signal output from the support device, sound emitting means for emitting the received audio tone signal as a tone, and an enable period based on the received periodic waveform signal Enable signal generating means for generating an enable signal for setting the enable signal, and an enable signal set by the generated enable signal In the period, an obtaining means for obtaining the pitch from the received periodic waveform signal, and a guide means for guiding the performance operator corresponding to the obtained pitch, and wherein the.

Further, the present invention is an audio tone signal, and each sound pitch contained in the song received the table to periodic waveform signal, supporting device connected to the performance apparatus for guiding the performance operators to be played Operation And generating means for generating audio musical sound signals by reproducing music data representing each sound constituting the music, and generating periodic waveform signals representing the pitch of each sound of the music based on the music data. And output means for outputting the audio musical tone signal and the periodic waveform signal from different channels, respectively.

Further, the present invention is an audio tone signal generated by reproducing the music, and the pitch of each note contained in the song A playing device connected to a support apparatus that outputs a table to periodic waveform signal And receiving means for receiving the audio tone signal and the periodic waveform signal respectively output from the support device, sound emitting means for emitting the received audio tone signal as a tone, and based on the received periodic waveform signal. An enable signal generating means for generating an enable signal for setting an enable period; an acquiring means for acquiring a pitch from the received periodic waveform signal within an enable period set by the generated enable signal; and the acquisition And a guide means for guiding a performance operator corresponding to the pitch.

The present invention is also a performance method in a performance system having a performance device and a support device, wherein the support device generates an enable signal for setting an enable period based on song data representing each sound constituting the song. Generating a periodic waveform signal representing the pitch of each sound of the song, outputting the generated enable signal and the periodic waveform signal from different channels, respectively, and the performance device enabling signal output from the support device And receiving a periodic waveform signal, obtaining a pitch from the received periodic waveform signal within an enable period set by the received enable signal, and performing a performance operator corresponding to the acquired pitch It is characterized by guiding.

The present invention is also a performance method in a performance system having a performance device and a support device, wherein the support device reproduces music data representing each sound constituting the music to generate an audio musical sound signal, and A periodic waveform signal representing the pitch of each sound of the song is generated based on song data, the audio musical tone signal and the periodic waveform signal are output from different channels, and the performance device is output from the support device, respectively. Receiving an audio tone signal and a periodic waveform signal, emitting the received audio tone signal as a tone, generating an enable signal for setting an enable period based on the received periodic waveform signal, and generating the generated enable signal in the enable period set by the signal to obtain the pitch from the received periodic waveform signal, pre-Symbol Characterized by guiding the performance operator corresponding to the resulting sounds high.

Furthermore, the present invention allows a computer to be used as connected support apparatus performance apparatus for guiding the performance operators to be played based on the received enable signal and periodic waveform signal, to display the each sound constituting the songs The step of generating the enable signal for setting the enable period based on the song data and generating the periodic waveform signal representing the pitch of each sound of the song is different from the generated enable signal and the periodic waveform signal. And outputting from the channel.

Further, the present invention is an audio tone signal, and each sound pitch contained in the song received the table to periodic waveform signal, supporting device connected to the performance apparatus for guiding the performance operators to be played Operation A computer used as a computer reproduces music data representing each sound constituting the music to generate an audio musical tone signal, and generates a periodic waveform signal representing a pitch of each sound of the music based on the music data. And a step of outputting the audio musical tone signal and the periodic waveform signal from different channels, respectively.

  In the present invention, the performance practice function can be supported by connecting the support device and the performance device without incurring high product costs while having versatility.

It is an external view for demonstrating the outline | summary of the performance system by one Embodiment of this invention. 1 is a block diagram showing an overall configuration of a performance system according to an embodiment of the present invention. It is a memory map which shows the memory structure of the memory | storage part 11 with which the assistance apparatus 100 is provided, and the structure of music data. 4 is a block diagram for explaining an interface between the support device 100 and the performance device 200. FIG. 4 is a flowchart illustrating an operation of support processing executed by the control unit 10 of the support apparatus 100. It is a figure for demonstrating the relationship between enable data and key number data. It is a flowchart which shows the operation | movement of the main process which CPU23 of the performance apparatus 200 performs. It is a flowchart which shows operation | movement of the measurement enable process which CPU23 of the performance apparatus 200 performs. It is a flowchart which shows operation | movement of the zero cross measurement process which CPU23 of the performance apparatus 200 performs. It is a figure for demonstrating operation | movement of a zero cross measurement process. It is a flowchart which shows the operation | movement of the LED process which CPU23 of the performance apparatus 200 performs. It is a block diagram which shows the structure of a modification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A. Outline FIG. 1 is an external view for explaining an outline of a performance system according to an embodiment of the present invention. As shown in FIG. 1, the performance system shown in FIG. 1 includes a support device 100 using a mobile terminal such as a smartphone and a performance device 200 that is a keyboard instrument. Output) and a line input terminal (stereo input) of the performance device 200 are connected by a stereo audio cable.

  Since the support device 100 and the performance device 200 are connected to the existing headphone terminal (stereo output) / line input terminal (stereo input) with a stereo audio cable, the product cost of the performance device 200 is increased while having versatility. The support apparatus 100 can be connected without any problem. In the present embodiment, an example in which a smartphone is used as the support device 100 will be described. However, the present invention is not limited thereto, and any tablet terminal, tablet PC, or ordinary PC having a headphone terminal (stereo output) may be applied. It goes without saying that it is possible.

  The support device 100 stores song data of a song for performance practice, reads the song data in the order of song progression, derives an enable signal and a key number signal, and outputs Lch (left channel) of the headphone terminal (stereo output). An enable signal is output from Rch (right channel), and a key number signal is output from Rch (right channel). The enable signal (Lch) and the key number signal (Rch) output from the headphone terminal of the support apparatus 100 are input to the line input terminal of the performance apparatus 200 connected by a stereo audio cable.

  The enable signal represents a period for instructing the performance device 200 to acquire a key number. The key number signal represents a key number representing the pitch of a melody sound read from music data as a periodic waveform signal. That is, the performance device 200 counts the number of times the waveform falling zero crossing is detected from the key number signal (periodic waveform signal) within the period in which the enable signal is kept enabled (signal level is H level), The number of detections is acquired as a key number.

  In the performance device 200, based on the enable data obtained by A / D converting the enable signal input to the Lch of the line input terminal, the key number signal (periodic waveform signal) input to the Rch of the line input terminal is converted to A / D. The key number is obtained by counting the number of times the waveform falling zero crossing is detected from the periodic waveform data obtained by D conversion, and the LED arranged at the key position designated by the obtained key number is turned on. Perform a navigation function that guides the keys to play. As a result, the support apparatus 100 and the performance apparatus 200 can be connected without incurring high product costs while having versatility, and a navigation function based on favorite song data captured from the outside (support apparatus 100) is executed. It becomes possible to support the performance practice function.

B. Configuration FIG. 2 is a block diagram showing the overall configuration of a performance system according to an embodiment of the present invention. Hereinafter, the configuration of the support device 100 and the performance device 200 will be described with reference to FIG. In addition, the structure of the assistance apparatus 100 has shown only the main functional elements which concern on the summary of this invention among the various functional elements with which a smart phone is provided.

(1) Configuration of Support Device 100 The support device 100 includes a control unit 10, a storage unit 11, a display unit 12, an operation unit 13, and an output unit 14, as illustrated in FIG. The control unit 10 includes a CPU and an input / output circuit, and supplies enable data and key number data derived from music data stored in the storage unit 11 to the output unit 14.

  The storage unit 11 includes a ROM, a RAM, and a flash memory, and includes an application program area APA, a work area WA, a song data area MDA, and a score data area SDA illustrated in FIG. In the application program area APA, program data of support processing (described later) executed by the control unit 10 is stored. The work area WA is used as a work area of the control unit 10 and temporarily stores various register / flag data.

  In the song data area MDA, song data representing each note (melody sound) constituting a song for performance practice is stored. The music data is MIDI data in a relative time system that is addressed in the order of music progression with the elapsed time ΔT and the event EVENT as a set. That is, the elapsed time ΔT is the elapsed time from the previous event, and designates the timing of the next event EVENT. The event EVENT is a note-on event (or note-off event that instructs mute) and a sound pitch (or mute). A key number representing (high) is provided. In the musical score data area SDA, musical score data for displaying a musical piece for performance practice on the display unit 12 is stored.

  The display unit 12 is composed of a color liquid crystal panel or the like, and displays a musical score for performance practice based on the musical score data under the control of the control unit 10. The operation unit 13 is composed of a touch panel arranged on the display screen of the display unit 12, and generates an operation event instructing the start of reading song data in response to a touch operation of a song start button formed on the display screen, for example. To the control unit 10.

  The output unit 14 includes a D / A converter for two channels (Lch, Rch) and a headphone terminal for stereo output. The output unit 14 outputs an enable signal obtained by D / A converting the enable data generated by the control unit 10 from the Lch of the headphone terminal. The output unit 14 outputs a key number signal (periodic waveform signal) obtained by D / A converting the key number data read from the music piece data by the control unit 10 from the Rch of the headphone terminal.

  Here, the signal formats of the enable signal and the key number signal output from the output unit 14 will be described with reference to FIG. The enable signal is a signal that rises from 0V to H level (for example, + 1.5V) and falls from H level to 0V, and the section (enable state) in which the H level is maintained acquires the key number to the performance device 200 side. Indicates the period to indicate.

  The key number signal represents a key number representing the pitch of the read music data (melody sound) as a periodic waveform signal. For example, when the keyboard 20 of the performance device 200 is composed of 32 keys, the key numbers are “1” to “32”. As will be described later, on the performance device 200 side, the number of times the waveform falling zero crossing is detected from the key number signal (periodic waveform signal) within the period in which the enable signal is in the enabled state (the signal level is H level). Count and obtain the number of detections as a key number.

  As described above, since the support device 100 transmits the Lch enable signal and the Rch key number signal derived from the song data to the performance device 200 via the stereo audio cable, the hardware necessary for serial data transmission, A transmission protocol becomes unnecessary, and as a result, the support apparatus 100 and the performance apparatus 200 can be connected without incurring high product costs while having versatility.

(2) Configuration of Performance Device 200 The performance device 200 includes a keyboard 20, an LED unit 21, an operation unit 22, a CPU 23, a ROM 24, a RAM 25, a sound source 26, an input unit 27, and a sound system 28 as shown in FIG. Is done. The keyboard 20 generates performance information such as key-on / key-off events, key numbers, and velocities in response to pressing and releasing key operations (performance operations). The LED unit 21 includes LEDs (light emitting elements) arranged for each key of the keyboard 20 and a driver (not shown) that drives the LEDs to light up, and is designated according to a control signal supplied from the CPU 23. An LED arranged at the key position is lit to guide the user to the key to be played.

  The operation unit 22 has various operation switches arranged on the apparatus panel, and generates a switch event corresponding to the switch type operated by the user. As main switches arranged in the operation unit 22, for example, there are a timbre selection switch for selecting a tone color of a generated musical tone, in addition to a power switch for turning on and off the apparatus power supply.

  The CPU 23 executes main processing to be described later, and based on the enable data obtained by A / D converting the Lch enable signal input from the support apparatus 100 via the stereo audio cable, the key number input to the Rch The key number is obtained by counting the number of times the waveform falling zero crossing is detected from the periodic waveform data obtained by A / D conversion of the signal (periodic waveform signal), and the key position designated by the obtained key number is obtained. The LED to be lit is turned on to guide the key to be played. Further, the CPU 23 supplies tone parameters (MIDI data) corresponding to performance information generated by the keyboard 20 to the sound source 26.

  The ROM 24 stores various control programs loaded on the CPU 23. The various control programs include main processing described later. The main process includes a measurement enable process, a zero cross measurement process, and an LED process. The RAM 25 is used as a work area for the CPU 23 and temporarily stores various register / flag data. The sound source 26 is configured by a well-known waveform memory reading method and includes a plurality of sound generation channels that perform time-division operation. The sound source 26 stores waveform data of various timbres, and among these, reads out waveform data corresponding to a musical tone parameter supplied from the CPU 23 to generate a musical tone waveform.

  The input unit 27 includes a stereo input line input terminal (not shown), an Lch A / D converter 27a, and an Rch A / D converter 27b. In the input unit 27, as shown in FIG. 4, the enable signal input to the Lch of the line input terminal is converted into enable data by the A / D converter 27a and supplied to the CPU 23, while the Rch of the line input terminal is supplied. Is converted into key number data (periodic waveform data) by the A / D converter 27 b and supplied to the CPU 23. The sound system 28 converts the musical tone data output from the sound source 26 into an analog musical tone signal, and then amplifies the level and then causes the speaker SP to generate sound.

B. Operation Hereinafter, the operation of the support process executed by the control unit 10 of the support apparatus 100 will be described with reference to FIGS. 5 to 6, and then the main process executed by the CPU 23 of the performance apparatus 200 with reference to FIGS. 7 to 11. Each operation of processing, measurement enable processing, zero cross measurement processing, and LED processing will be described.

(1) Operation of Support Process FIG. 5 is a flowchart showing the operation of the support process executed by the control unit 10 of the support apparatus 100. When the support process is executed, the control unit 10 proceeds to step SA1 illustrated in FIG. 5 and performs initialization such as initializing the work area WA of the storage unit 11. When the initialization is completed, the process proceeds to step SA2, where the score data is read from the score data area SDA (see FIG. 3) of the storage unit 11 and displayed on the display unit 12.

  Next, in step SA3, the process waits until an operation event for instructing start of reading of music data occurs. It is assumed that the user touches a music start button formed on the display screen of the display unit 12 and an operation event instructing the start of reading music data is generated. If it does so, the judgment result of the said step SA3 will become "YES", and will progress to step SA4. In step SA4, a tick process for managing the note on / note off event timing (sounding / mute timing) of each melody sound represented by the music data based on the elapsed time counted with the minimum resolution Tick from the music start time is executed.

  In step SA5, an enable signal transmission process is executed. In the enable signal transmission process, as shown in FIG. 6, it is obtained in the tick process in step SA4 from the timing of the previous note-off event obtained in the tick process in step SA4 (hereinafter referred to as the previous note-off timing Toff). Enable data having a period up to the timing of the next note-on event (hereinafter referred to as the next note-on timing Ton) is generated and supplied to the output unit 14. Accordingly, the output unit 14 outputs an enable signal obtained by D / A converting the enable data generated by the control unit 10 from the Lch of the headphone terminal.

  Subsequently, in step SA6, the key number included in the next note-on event is read from the corresponding song data during the enable period from the previous note-off timing Toff to the next note-on timing Ton shown in FIG. The number is converted into key number data (periodic waveform data) and supplied to the output unit 14.

  As a result, the output unit 14 outputs the key number signal obtained by D / A converting the key number data (periodic waveform data) generated by the control unit 10 from the Rch of the headphone terminal. Note that the key number data (periodic waveform data) referred to here is waveform data for 10 periods during the enable period, for example, if the key number is “10”. The waveform shape may be anything as long as it has periodicity such as a rectangular wave, a triangular wave, or a sine wave.

  Next, in step SA7, it is determined whether or not the song data to be read has reached the end of the song. If the end of the song has not been reached, the determination result is “NO”, and the process returns to step SA4. Thereafter, the above steps SA4 to SA7 are repeated until the end of the music is reached. When the end of the song is reached, the determination result in step SA7 is “YES”, and the process ends.

  As described above, in the support apparatus 100, when the user touches the song start button to start reading song data, the period from the previous note-off timing Toff to the next note-on timing Ton is set to the H level (enable period). Enable data to be generated, D / A converted at the output unit 14 and output as an enable signal from the Lch of the headphone terminal, and the key number included in the next note-on event is keyed during the enable period. The data is converted into number data (periodic waveform data), and the key number data (periodic waveform data) is D / A converted by the output unit 14 and output from the Rch of the headphone terminal as a key number signal.

(2) Operation of Main Process Next, the operation of the main process executed by the CPU 23 of the performance device 200 will be described with reference to FIG. When this process is executed, the CPU 23 advances the process to step SB1 shown in FIG. 7 and executes initialization such as initialization of the RAM 25. In the subsequent step SB2, the switch event corresponding to the switch type operated by the user is executed. When the switch processing designated by the above-mentioned, for example, a timbre selection switch is operated, the sound source 26 is instructed to generate a musical tone of the timbre selected by the switch operation.

  Next, in step SB3, a keyboard process is performed in which each key on the keyboard 20 is scanned to detect a pressed key or a released key. Subsequently, in step SB4, an instruction is given to the sound source 26 that generates the musical tone of the depressed key detected in step SB3, or the pitch of the released key detected in step SB3 is determined. If the musical sound is being generated, a sound generation process for instructing to mute the musical sound is executed.

  In step SB5, measurement enable processing is executed. In the measurement enable process, as will be described later, after an enable signal input from the support device 100 is A / D converted to obtain an AD value (enable data), it is determined whether or not zero cross measurement is currently being performed. If the zero cross measurement is not being performed but the enable state is set, the zero cross counter ZC is cleared to zero and the measurement flag KF is set to “1” to prepare for the zero cross measurement. On the other hand, if the zero-cross measurement is currently being performed and the disable state is set, the measurement flag KF is reset to zero and the number of zero-cross detections counted by the zero-cross counter ZC is held as the key number KN.

  Subsequently, in step SB6, zero cross measurement processing is executed. In the zero-cross measurement process, as will be described later, when the measurement flag KF is “1” (during zero-cross measurement), the key number signal input from the support device 100 is A / D converted by the A / D converter 27b for Rch. The falling zero cross of the key number data (periodic waveform data) is detected based on the current AD value and the previous AD value obtained by conversion, and the zero cross counter ZC is incremented every time a falling zero cross is detected. Thereafter, the AD value acquired this time is updated to the previous AD value. By repeating such processing while the measurement flag KF is “1” (during zero cross measurement), the number of zero cross detections counted by the zero cross counter ZC is obtained as a number representing the key number KN.

  In step SB7, the LED unit 21 is instructed to turn off the LED that has been instructed to turn on last time, and the LED unit 21 is instructed to turn on the LED disposed on the key of the key number KN newly acquired this time. An LED process for resetting the key number KN to zero is executed. Thereafter, steps SB2 to SB7 described above are repeated to be arranged at the key position designated by the key number KN acquired based on the enable signal and the key number signal (periodic waveform signal) input from the support apparatus 100. The navigation function that guides the key to be played by turning on the LED is executed and the performance practice is advanced.

(3) Operation of Measurement Enable Process Next, the operation of the measurement enable process will be described with reference to FIG. When this process is executed through step SB5 (see FIG. 7) of the main process described above, the CPU 23 advances the process to step SC1 shown in FIG. 8, and inputs from the support apparatus 100 side via the stereo audio cable. The enable signal input to the 27 line input terminals is A / D converted by an A / D converter 27a for Lch (see FIG. 4) to obtain an AD value (enable data).

  Subsequently, in step SC2, it is determined whether or not the measurement flag KF is “1”. When the measurement flag KF is “1”, it indicates that zero cross measurement is being performed, and when it is “0”, zero cross measurement is not performed. Therefore, in step SC2, it is determined whether or not zero cross measurement is being performed. If the measurement flag KF is “0”, that is, if zero cross is not measured, the determination result here is “NO”, and the process proceeds to step SC3.

  In step SC3, it is determined whether or not the AD value (enable data) acquired in step SC1 is greater than a threshold value. The threshold value is a level value for determining whether or not the AD value (enable data) is at the H level, that is, whether or not the AD value is enabled. If the acquired AD value (enable data) is smaller than the threshold value and disabled, the determination result is “NO”, and the process ends.

  On the other hand, if the acquired AD value (enable data) is larger than the threshold and is in the enabled state, the determination result in step SC3 is “YES”, the process proceeds to step SC4, and after the zero cross counter ZC is cleared to zero, Proceeding to step SC5, the measurement flag KF is set to “1” to indicate that the zero cross measurement is being performed, and this processing is terminated.

  On the other hand, if the measurement flag KF is “1”, that is, if the zero cross measurement is being performed, the determination result of step SC2 is “YES”, and the process proceeds to step SC6. In step SC6, it is determined whether or not the AD value (enable data) acquired in step SC1 is equal to or less than a threshold value. If the AD value (enable data) is in an enabled state greater than the threshold value, the determination result is “NO”, and the present process ends.

  On the other hand, if the acquired AD value (enable data) is in the disable state equal to or less than the threshold value, the determination result in step SC6 is “YES”, the process proceeds to step SC7, and the measurement flag KF is set to “0”. Then, after the zero cross is not measured, the process proceeds to the next step SC8, where the number of zero cross detections counted by the zero cross counter ZC is held as the key number KN, and this process is finished.

  As described above, in the measurement enable process, after the A / D conversion is performed on the enable signal input from the support apparatus 100 side to acquire the AD value (enable data), it is determined whether the zero cross measurement is currently being performed. When the zero cross measurement is not currently being performed and the acquired AD value (enable data) is larger than the threshold value and enabled, the zero cross counter ZC is cleared to zero and the measurement flag KF is set to “1” to perform zero cross measurement. Get ready.

  On the other hand, if the zero cross measurement is currently being performed and the acquired AD value (enable data) is in the disable state equal to or less than the threshold, the zero cross measurement is completed and the measurement flag KF is reset to zero and the zero cross counter ZC. The counted number of zero cross detections is held as a key number KN.

(4) Operation of Zero Cross Measurement Processing Next, the operation of the zero cross measurement processing will be described with reference to FIG. When this process is executed via step SB6 (see FIG. 7) of the main process described above, the CPU 23 advances the process to step SD1 shown in FIG. 9, and the measurement flag KF is “1”, that is, zero cross measurement is in progress. Judge whether there is. If the measurement flag KF is “0” (zero cross is not measured), the determination result is “NO”, and this process ends.

  On the other hand, when the measurement flag KF becomes “1” (during zero cross measurement), the determination result in step SD1 becomes “YES”, and the process proceeds to step SD2. In step SD2, the key number signal input to the Rch of the line input terminal of the input unit 27 via the stereo audio cable from the support apparatus 100 side is A / D converted by the A / D converter 27b (see FIG. 4). To obtain an AD value (key number data).

  In steps SD3 to SD4, the previously acquired AD value is larger than “0” and the currently acquired AD value is “0” or less, that is, as shown in FIG. 10, the key number data (periodic waveform data) It is determined whether or not a falling zero cross is detected. If the falling zero cross of the key number data (periodic waveform data) is not detected, the determination result of any one of the above steps SD3 to SD4 becomes “NO”, and this process is finished.

  On the other hand, when the falling zero cross of the key number data (periodic waveform data) is detected, the judgment results in both steps SD3 to SD4 are “YES”, the process proceeds to step SD5, and the zero cross counter ZC is detected according to the falling zero cross detection. Then, the process proceeds to the next step SD6, where the AD value (key number data) acquired this time is updated to the previous AD value, and this process ends.

  Thus, in the zero cross measurement process, if the measurement flag KF is “1” (zero cross measurement is in progress), the key number signal input from the support device 100 is A / D converted by the Rch A / D converter 27b. After detecting the falling zero cross of the key number data (periodic waveform data) based on the current AD value and the previous AD value acquired as described above, and incrementing the zero cross counter ZC every time the falling zero cross is detected The AD value acquired this time is updated to the previous AD value. By repeating such processing while the measurement flag KF is “1” (during zero cross measurement), the number of zero cross detections counted by the zero cross counter ZC is obtained as a number representing the key number KN.

(5) Operation of LED Processing Next, the operation of LED processing will be described with reference to FIG. When this process is executed via step SB7 (see FIG. 7) of the main process described above, the CPU 23 advances the process to step SE1 shown in FIG. 11, and step SC8 (see FIG. 8) of the measurement enable process described above. It is determined whether or not the key number KN stored in step 1 is greater than “0”.

  If the key number KN is equal to or smaller than “0”, that is, an invalid key number KN, the determination result is “NO”, and the present process ends. If the key number KN is greater than “0”, the determination result is “YES”. The process proceeds to step SE2. In step SE2, the LED unit 21 is instructed to turn off the previously instructed LED, and in the subsequent step SE3, the LED unit 21 is instructed to light the LED disposed on the key of the newly generated key number KN. . This guides the position of the next key to be played. In step SE4, the key number KN is reset to zero and the process is terminated.

  As described above, according to the present embodiment, in the performance system configured by connecting the headphone terminal of the support apparatus 100 and the line input terminal of the performance apparatus 200 with the stereo audio cable, the support apparatus 100 performs performance practice. The enable signal and the key number signal are derived from the music data to be provided, and the enable signal is output from the Lch of the headphone terminal, and the key number signal is output from the Rch of the headphone terminal.

  Then, in the performance device 200, based on the enable data obtained by A / D converting the enable signal input to the Lch of the line input terminal, the key number signal (periodic waveform signal) input to the Rch of the line input terminal is obtained. An LED arranged at the key position designated by the acquired key number KN is obtained by counting the number of times the waveform falling zero-cross is detected from the periodic waveform data obtained by A / D conversion, and acquiring the key number KN. Since the key to be played is guided by turning on, the support device and the performance device can be connected without incurring high product costs while having versatility, and the favorite song data captured from the outside (support device 100) can be used. It is possible to support the performance practice function by executing the navigation function based on it.

  In the above-described embodiment, the support device 100 derives the enable signal and the key number signal from the song data for performance practice, outputs the enable signal from the headphone terminal Lch, and outputs the key number signal from the headphone terminal Rch. However, the present invention is not limited to this, and a modification shown in FIG. 12 is also possible.

  That is, as shown in FIG. 12, the support apparatus 100 generates a musical sound audio signal by D / A converting the musical sound data obtained by reproducing the music data to be used for performance practice, and this is generated from the Lch of the headphone terminal. At the same time, the key number signal derived from the music data is output from the Rch of the headphone terminal.

  On the other hand, in the performance device 200, the musical sound audio signal input to the Lch of the line input terminal is emitted from the sound system 28 (mixer, amplifier, and speaker). In the performance device 200, an envelope follower EF is provided, and an envelope component extracted from the key number signal (waveform period signal) input to the Rch of the line input terminal by the envelope follower EF is used as an enable signal. The extracted enable signal is converted into enable data by the A / D converter 27a and supplied to the CPU 23, and the key number signal input to the Rch of the line input terminal is converted to the key by the A / D converter 27b. It is converted into number data (periodic waveform data) and supplied to the CPU 23.

  According to such a modified example, the playing device 200 guides the key to be played while playing the music to be practiced, so that the support device 100 and the playing device 200 are connected without incurring high product costs while having versatility. In addition to making it possible, you will be able to guide the key to be played while playing the song to practice.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to it, It is included in the invention described in the claim of this-application, and its equivalent range. Hereinafter, each invention described in the scope of claims at the beginning of the present application will be additionally described.

(Appendix)
[Claim 1]
A performance system having a support device and a performance device,
The support device includes:
Generating means for generating an enable signal for setting an enable period based on music data representing each sound constituting the music, and generating a periodic waveform signal representing the pitch of each sound of the music;
Output means for outputting the generated enable signal and the periodic waveform signal from different channels, respectively, the performance device,
Receiving means for receiving an enable signal and a periodic waveform signal output from the support device;
An acquisition means for acquiring a pitch from the received periodic waveform signal within an enable period set by the received enable signal;
A performance system comprising: guide means for guiding a performance operator corresponding to the acquired pitch.

[Claim 2]
A support device connected to a performance device for guiding a performance operator to be played based on the received enable signal and periodic waveform signal,
Generating the enable signal for setting an enable period based on song data song data representing each sound constituting the song, and generating the periodic waveform signal representing the pitch of each tone of the song;
Output means for outputting the generated enable signal and the periodic waveform signal from different channels, respectively;
A support apparatus comprising:

[Claim 3]
The generation means generates an enable signal having an enable period from the previous note-off timing Toff to the next note-on timing Ton based on the music data, and a cycle that represents the pitch included in the next note-on event as the number of cycles The support apparatus according to claim 1, wherein a waveform signal is generated.

[Claim 4]
A performance device connected to the support device for outputting the enable signal for setting an enable period based on song data representing each sound constituting the song and the periodic waveform signal representing the pitch of each sound of the song. ,
Receiving means for receiving an enable signal and a periodic waveform signal output from the support device;
An acquisition means for acquiring a pitch from the received periodic waveform signal within an enable period set by the received enable signal;
Guide means for guiding a performance operator corresponding to the acquired pitch;
The performance apparatus characterized by comprising.

[Claim 5]
5. The acquisition unit according to claim 1, wherein the acquisition unit acquires a pitch by counting the number of periods of the received periodic waveform signal during an enable period set by the received enable signal. Performance equipment.

[Claim 6]
A performance system having a support device and a performance device,
The purple koji device is
Generating a musical tone signal by reproducing music data representing each sound constituting the music, and generating a periodic waveform signal representing a pitch of each sound of the music based on the music data;
Output means for outputting the audio tone signal and the periodic waveform signal from different channels, respectively,
The performance device is:
Receiving means for receiving an audio tone signal and a periodic waveform signal respectively output from the support device;
A sound emitting means for emitting the received audio musical sound signal as a musical sound;
An enable signal generating means for generating an enable signal for setting an enable period based on the received periodic waveform signal;
An acquisition means for acquiring a pitch from the received periodic waveform signal within an enable period set by the generated enable signal;
A performance system comprising: guide means for guiding a performance operator corresponding to the acquired pitch.

[Claim 7]
An assist device connected to a performance device that receives an audio musical sound signal and the periodic waveform signal representing a pitch of each sound included in a song and guides a performance operator to be performed,
Generating music data by reproducing music data representing each sound constituting the music, and generating a periodic waveform signal representing the pitch of each sound of the music based on the music data;
Output means for outputting the audio tone signal and the periodic waveform signal from different channels, respectively;
A support apparatus comprising:

[Claim 8]
An audio musical sound signal generated by playing a song, and a performance device connected to a support device that outputs the periodic waveform signal representing the pitch of each sound included in the song,
Receiving means for receiving an audio tone signal and a periodic waveform signal respectively output from the support device;
A sound emitting means for emitting the received audio musical sound signal as a musical sound;
An enable signal generating means for generating an enable signal for setting an enable period based on the received periodic waveform signal;
An acquisition means for acquiring a pitch from the received periodic waveform signal within an enable period set by the generated enable signal;
Guide means for guiding a performance operator corresponding to the acquired pitch;
The performance apparatus characterized by comprising.

[Claim 9]
Generating an enable signal for setting an enable period based on music data representing each sound constituting the music, and generating a periodic waveform signal representing the pitch of each sound of the music,
The generated enable signal and periodic waveform signal are output from different channels, respectively.
Receiving an enable signal and a periodic waveform signal output from the support device;
Within the enable period set by the received enable signal, obtain a pitch from the received periodic waveform signal,
Guiding a performance operator corresponding to the acquired pitch;
How to play.

[Claim 10]
Playing music data representing each sound constituting the music to generate an audio musical sound signal, and generating a periodic waveform signal representing the pitch of each sound of the music based on the music data,
The audio musical tone signal and the periodic waveform signal are output from different channels, respectively.
Receiving audio tone signals and periodic waveform signals respectively output from the support devices;
The received audio tone signal is emitted as a tone,
Generating an enable signal for setting an enable period based on the received periodic waveform signal;
Within the enable period set by the generated enable signal, obtain the pitch from the received periodic waveform signal,
A performance method for guiding a performance operator corresponding to the acquired pitch.

[Claim 11]
In a computer used as a support device connected to a performance device for guiding a performance operator to be played based on the received enable signal and periodic waveform signal,
Generating the enable signal for setting an enable period based on song data song data representing each sound constituting the song, and generating the periodic waveform signal representing the pitch of each tone of the song;
Outputting the generated enable signal and periodic waveform signal from different channels, respectively;
A program that executes

[Claim 12]
A computer used as a support device connected to a performance device that receives an audio musical sound signal and the periodic waveform signal representing the pitch of each sound included in a song and guides a performance operator to be performed,
Regenerating music data representing each sound constituting the music to generate an audio musical sound signal, and generating a periodic waveform signal representing the pitch of each sound of the music based on the music data;
Outputting the audio tone signal and the periodic waveform signal from different channels, respectively;
A program that executes

DESCRIPTION OF SYMBOLS 100 Support apparatus 10 Control part 11 Memory | storage part 12 Display part 13 Operation part 14 Output part 200 Performance apparatus 20 Keyboard 21 LED part 22 Operation part 23 CPU
24 ROM
25 RAM
26 Sound source 27 Input unit 28 Sound system

Claims (12)

A performance system having a support device and a performance device,
The support device includes:
Generating means for generating an enable signal for setting an enable period based on music data representing each sound constituting the music, and generating a periodic waveform signal representing the pitch of each sound of the music;
Output means for outputting the generated enable signal and the periodic waveform signal from different channels, respectively;
Have
The performance device is:
Receiving means for receiving an enable signal and a periodic waveform signal output from the support device;
An acquisition means for acquiring a pitch from the received periodic waveform signal within an enable period set by the received enable signal;
Guiding means for guiding a performance operator corresponding to the acquired pitch;
A performance system characterized by that. A support device connected to a performance device for guiding a performance operator to be played based on the received enable signal and periodic waveform signal,
Each sound constituting the music and generates the enable signal for setting the enable period based on the table to music data, a generation means for generating the periodic waveform signal representative of the pitch of each note of the song,
Output means for outputting the generated enable signal and the periodic waveform signal from different channels, respectively;
A support apparatus comprising: The generation means generates an enable signal having an enable period from the previous note-off timing Toff to the next note-on timing Ton based on the music data, and a cycle that represents the pitch included in the next note-on event as the number of cycles The support apparatus according to claim 2 , wherein a waveform signal is generated. Louis enable signal to set the enable period based on the music data representing each sound constituting the song, and the pitch of each note of the song in playing device connected to a support apparatus that outputs a table to periodic waveform signal There,
Receiving means for receiving an enable signal and a periodic waveform signal output from the support device;
An acquisition means for acquiring a pitch from the received periodic waveform signal within an enable period set by the received enable signal;
Guide means for guiding a performance operator corresponding to the acquired pitch;
The performance apparatus characterized by comprising. 5. The performance according to claim 4 , wherein the obtaining means obtains a pitch by counting the number of periods of the received periodic waveform signal during an enable period set by the received enable signal. apparatus. A performance system having a performance device and a support device,
The support device includes:
Generating a musical tone signal by reproducing music data representing each sound constituting the music, and generating a periodic waveform signal representing a pitch of each sound of the music based on the music data;
Output means for outputting the audio tone signal and the periodic waveform signal from different channels, respectively;
Comprising
The performance device is:
Receiving means for receiving an audio tone signal and a periodic waveform signal respectively output from the support device;
A sound emitting means for emitting the received audio musical sound signal as a musical sound;
An enable signal generating means for generating an enable signal for setting an enable period based on the received periodic waveform signal;
An acquisition means for acquiring a pitch from the received periodic waveform signal within an enable period set by the generated enable signal;
Guiding means for guiding a performance operator corresponding to the acquired pitch;
A performance system characterized by that. Audio tone signal, and each sound pitch contained in the song received the table to periodic waveform signals, a supporting device connected to a performance apparatus for guiding the performance operators to be played operation,
Generating music data by reproducing music data representing each sound constituting the music, and generating a periodic waveform signal representing the pitch of each sound of the music based on the music data;
Output means for outputting the audio tone signal and the periodic waveform signal from different channels, respectively;
A support apparatus comprising: Audio tone signals are generated by playing a song, and the pitch of each note contained in the song A playing device connected to a support apparatus that outputs a table to periodic waveform signal,
Receiving means for receiving an audio tone signal and a periodic waveform signal respectively output from the support device;
A sound emitting means for emitting the received audio musical sound signal as a musical sound;
An enable signal generating means for generating an enable signal for setting an enable period based on the received periodic waveform signal;
An acquisition means for acquiring a pitch from the received periodic waveform signal within an enable period set by the generated enable signal;
Guide means for guiding a performance operator corresponding to the acquired pitch;
The performance apparatus characterized by comprising. A performance method in a performance system having a performance device and a support device,
The support device includes:
Generating an enable signal for setting an enable period based on music data representing each sound constituting the music, and generating a periodic waveform signal representing the pitch of each sound of the music,
The generated enable signal and periodic waveform signal are output from different channels, respectively.
The performance device is:
Receiving an enable signal and a periodic waveform signal output from the support device;
Within the enable period set by the received enable signal, obtain a pitch from the received periodic waveform signal,
Guiding a performance operator corresponding to the acquired pitch;
How to play. A performance method in a performance system having a performance device and a support device,
The support device includes:
Playing music data representing each sound constituting the music to generate an audio musical sound signal, and generating a periodic waveform signal representing the pitch of each sound of the music based on the music data,
The audio musical tone signal and the periodic waveform signal are output from different channels, respectively.
The performance device is:
Receiving audio tone signals and periodic waveform signals respectively output from the support devices;
The received audio tone signal is emitted as a tone,
Generating an enable signal for setting an enable period based on the received periodic waveform signal;
Within the enable period set by the generated enable signal, obtain the pitch from the received periodic waveform signal,
Guiding the performance operator corresponding to the previous Quito resulting sounds high, how to play. In a computer used as a support device connected to a performance device for guiding a performance operator to be played based on the received enable signal and periodic waveform signal,
Each sound constituting the music and generates the enable signal for setting the enable period based on the table to music data, and generating the periodic waveform signal representative of the pitch of each note of the song,
Outputting the generated enable signal and periodic waveform signal from different channels, respectively;
A program that executes Audio tone signal, and the pitch of each note contained in the music receives the table to periodic waveform signals, the computer used as a support device connected to a performance apparatus for guiding the performance operators to be played operation,
Regenerating music data representing each sound constituting the music to generate an audio musical sound signal, and generating a periodic waveform signal representing the pitch of each sound of the music based on the music data;
Outputting the audio tone signal and the periodic waveform signal from different channels, respectively;
A program that executes

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