JP6681240B2 - Electronic musical instrument system, music reproduction control device, and electronic musical instrument - Google Patents

Description

  The present invention relates to an electronic musical instrument system, a music reproduction control device, and an electronic musical instrument.

  Conventionally, an electronic musical instrument such as an electronic piano is known. The electronic musical instrument may have various functions in addition to outputting the performance sound of the performer. For example, an accompaniment function for reproducing a built-in music (stored in an electronic musical instrument) (accompaniment music) along with the performance of the performer, a performance assistance function, or outputting a MIDI (Musical Instrument Digital Interface) signal to another device. An electronic musical instrument having a function of controlling is known.

  For example, Patent Document 1 discloses an electronic keyboard musical instrument having an expression pedal, which outputs fill-in data specified according to the amount of depression of the expression pedal from among a plurality of pre-stored fill-in data. An electronic keyboard instrument having a function is disclosed.

  Further, in Patent Document 2, processing such as outputting event data (MIDI signal) to which a cue flag is added to an effect device in response to a keystroke by a player so that the effect device reproduces a sound effect. There is disclosed an electronic keyboard instrument having a function of performing.

JP-A-7-225580 Patent No. 4200621

  By the way, when the performer plays along with the reproduced accompaniment music, for example, when using the accompaniment function described above, it is desired to select a music piece other than the music piece built in the electronic musical instrument as the accompaniment music. There is a request. In order to realize such a demand, it is possible to play the accompaniment music in a music reproduction control device such as a digital audio player (DAP) capable of storing and reproducing any music. Alternatively, it is conceivable that a module corresponding to the music reproduction control device is built in the electronic musical instrument and the accompaniment music is reproduced in the module.

  When the accompaniment tune is reproduced by the music reproduction control device, it is usually considered that the music reproduction control device is arranged at a place where it does not interfere with the performance (for example, next to a keyboard row in the case of an electronic piano). Further, when a module corresponding to the music reproduction control device is built in the electronic musical instrument, it is considered that the operation section of the module is usually arranged in a place where it does not interfere with the performance.

  When the operation unit of the music reproduction control device or module is placed in a place where it does not interfere with the performance, the performer accompanies the music reproduction control device or module while maintaining the performance posture that is suitable for performance. It may be difficult to perform the reproduction operation of. For example, when the operation unit of the music reproduction control device or the module is arranged beside the keyboard row of the electronic piano, the performer needs to reach to that position and perform the accompaniment reproduction operation. In particular, for a music piece reproduction control device or module that employs a touch panel type liquid crystal display as an operation unit, the performer needs to perform an accompaniment piece reproduction operation while observing the display.

  Therefore, after performing the accompaniment reproduction operation to the music reproduction control device or module, the performer must urgently take a performance posture and start the performance. As a result, there is a possibility that a suitable performance cannot be performed at the beginning of the music.

  An object of the present invention is to set the start timing of an accompaniment piece when a performer plays in accordance with an accompaniment piece that is reproduced under the control of a music piece reproduction control device connected to an electronic musical instrument or an electronic musical instrument built-in module corresponding thereto. The purpose is to enable the execution of the indicated count and the operation for starting the reproduction of the accompaniment tune in the playing posture.

  The present invention is an electronic musical instrument system comprising an electronic musical instrument and a music reproduction control device communicatively connected to the electronic musical instrument, wherein the electronic musical instrument is operated by a performer with respect to a performance operating section. A trigger transmission unit that transmits a first trigger signal to the music reproduction control device, wherein the music reproduction control device starts reproduction of an accompaniment music that is reproduced along with the performance when the first trigger signal is received. A count execution control unit that controls to execute a count that informs the performer of the timing, and a music reproduction control unit that controls to reproduce the accompaniment music after the execution of the count. To do.

  Preferably, the trigger transmission unit transmits a second trigger signal different from the first trigger signal to the music reproduction control device in response to an operation by the performer, and the count execution control unit causes the second execution signal to be transmitted to the second reproduction signal. When the trigger signal is received, the control for executing the count is not performed, and when the second trigger signal is received, the music reproduction control unit immediately performs the control for reproducing the preselected music. Is characterized by.

  Preferably, the music reproduction control device further includes a communication delay time calculation unit that calculates a communication delay time between the electronic musical instrument and the music reproduction control device, and the electronic musical instrument executes the count and the music piece. In any one of a case where the reproduction control device reproduces the accompaniment music and a case where the electronic musical instrument reproduces the accompaniment music and the music reproduction control device executes the counting, the music reproduction control unit is operated. The reproduction start timing of the accompaniment tune is adjusted based on the communication delay time.

  Desirably, when the electronic musical instrument performs the counting and the musical composition reproduction control device reproduces the accompaniment tune, the count execution control unit, when receiving the first trigger signal, a count instruction signal, and A tempo information indicating the tempo of the accompaniment song is transmitted to the electronic musical instrument, and when the electronic musical instrument receives the count instruction signal and the tempo information, the electronic musical instrument performs the counting based on the tempo indicated by the tempo information. It is characterized by including an execution unit.

  Further, the present invention is a music reproduction control device communicatively connected to an electronic musical instrument, wherein when a first trigger signal transmitted from the electronic musical instrument is received in response to an operation by a performer on a performance operation unit. , A count execution control unit for performing a control for executing a count for notifying the performer of the reproduction start timing of the accompaniment music reproduced along with the performance, and a control for reproducing the accompaniment music after the execution of the count And a music reproduction control unit.

  Further, the present invention is an electronic musical instrument comprising a musical instrument module and a music reproduction control module communicatively connected to the musical instrument module, wherein the musical instrument module responds to an operation on a performance operation section by a performer. And a trigger transmitting unit that transmits a first trigger signal to the music reproduction control module, wherein the music reproduction control module reproduces an accompaniment music that is reproduced along with the performance when the first trigger signal is received. A count execution control unit that controls to execute a count that notifies the performer of the start timing, and a music reproduction control unit that controls to reproduce the accompaniment music after the execution of the count. And

  According to the present invention, when a performer performs a performance in accordance with an accompaniment music played under the control of a music reproduction control device connected to an electronic musical instrument or an electronic musical instrument built-in module corresponding thereto, the start timing of the accompaniment music is set. It is possible to execute the indicated count and the operation for starting the reproduction of the accompaniment tune in the playing posture.

It is a schematic diagram of a configuration of an electronic piano system according to the present embodiment. It is a figure which shows the execution timing of each process in an electronic piano and DAP. It is a flow chart which shows a flow of processing in an electronic piano system concerning this embodiment. It is a schematic diagram of a configuration of an electronic piano in which a DAP module is incorporated.

  Hereinafter, embodiments of the present invention will be described. In the embodiment described below, an example in which an electronic keyboard musical instrument is used as the electronic musical instrument will be described.

<First Embodiment>
FIG. 1 shows a schematic configuration diagram of an electronic piano system 10 as an electronic musical instrument system according to a first embodiment of the present invention. The electronic piano system 10 is configured to include an electronic piano 12 as an electronic keyboard instrument, and a DAP 14 as a music reproduction control device communicably connected to the electronic piano 12.

  First, each component of the electronic piano 12 will be described. The electronic piano 12 can set a plurality of performance modes. For example, it is possible to select an accompaniment mode in which an accompaniment tune is reproduced along with the performance of the performer. The reproduction control of the accompaniment tune is executed by the DAP 14 described later. The term "accompaniment music" in the present specification means a music piece reproduced along with the performance, and the content of the accompaniment music may be any. For example, the content may be the main melody, or may be a normal music piece viewed as a work.

  The communication unit 20 includes, for example, a USB (Universal Serial Bus) interface and the like, and is provided to communicate with the DAP 14. The communication unit 20 may be a wireless communication interface such as a Bluetooth (registered trademark) adapter. That is, the electronic piano 12 and the DAP 14 may be connected by a wireless communication line.

  The performance operation section 22 is operated by a player to perform a performance on the electronic piano 12, and is composed of, for example, a keyboard row and a pedal group. The performance operating section 22 also outputs an accompaniment trigger signal as a first trigger signal in response to an operation by the player. In this embodiment, when the performance mode of the electronic piano 12 is the accompaniment mode, an accompaniment trigger signal is output when a predetermined pedal of the pedal group is depressed. The accompaniment trigger signal is transmitted to the DAP 14 via the communication unit 20. In this way, the performance operating section 22 also functions as a trigger transmitting section that transmits the first trigger signal to the DAP 14. As will be described later, the accompaniment trigger signal is a signal serving as a trigger for causing the DAP 14 to execute a control for performing a count for notifying the player of the reproduction start timing of the accompaniment music and a control for reproducing the accompaniment music. .

  The operation unit 24 is composed of, for example, a button group, and inputs an instruction from the player to the electronic piano 12. The operation unit 24 is used, for example, to set a tone color of a musical tone output from the electronic piano 12, settings related to effectors (reverb, delay, etc.) applied to the output musical tone, or a performance mode. The operation unit 24 also outputs an immediate reproduction trigger signal as a second trigger signal in response to an operation by the player. In the present embodiment, when the play button included in the operation unit 24 is pressed, the immediate reproduction trigger signal is output. The instant playback trigger signal is a signal different from the accompaniment trigger signal. At least, the signals are so different that the DAP 14 can distinguish the two signals. The instant reproduction trigger signal is transmitted to the DAP 14 via the communication unit 20. In this way, the operation unit 24 also functions as a trigger transmission unit that transmits the second trigger signal to the DAP 14. In the present embodiment, the immediate reproduction trigger signal is output when the operation unit 24 is operated by the player, but the immediate reproduction trigger signal is immediately reproduced when the performance operation unit 22 (for example, a specific keyboard or the like) is operated. A trigger signal may be output.

  The storage unit 26 is composed of, for example, a ROM (Read Only Memory), and stores a program for controlling each unit of the electronic piano 12 or a musical tone signal output from the electronic piano 12 (eg, sampling sound data of an acoustic piano). Remembered. The storage unit 26 also stores a plurality of piano-side music data 28 including demo music data of the electronic piano 12 and practice music data for practice. The piano-side music data 28 can be used as an accompaniment music in the accompaniment mode. Further, the storage unit 26 stores the piano-side count sound data 30 that is output prior to the start of playing the accompaniment tune. As the count sound data 30 on the piano side, for example, metronome sound data is used. In this embodiment, the piano-side music data 28 and the piano-side count sound data 30 are already stored when the electronic piano 12 is shipped from the factory.

  The tone generator circuit 31 reads the musical tone signal, the piano-side music data 28, and the piano-side count sound data 30 from the storage unit 26 and outputs them to the voice output unit 32, which will be described later, under the control of the control unit 34, which will be described later. The tone generator circuit 31 may perform processing such as adding envelope data to the musical tone signal read from the storage unit 26.

  The audio output unit 32 includes a speaker (not shown) that converts an audio signal into a sound wave and outputs the sound wave, and a headphone amplifier to which headphones are connected. The voice output unit 32 outputs the tone signal read from the storage unit 26 when the player operates the performance operation unit 22 (that is, the electronic piano 12 is played). The voice output unit 32 also outputs the piano-side music data 28 and the piano-side count sound data 30 read from the storage unit 26. In addition, a DAC (Digital Audio Converter) and an amplifier (amplifying circuit), which are not shown, are provided in front of the speaker and the headphone amplifier of the audio output unit 32.

  The control unit 34 includes, for example, a microcontroller, and controls each unit of the electronic piano 12 according to a program stored in the storage unit 26. As will be described later, the control unit 34 executes the count by outputting the piano-side count sound data 30 stored in the storage unit 26 from the voice output unit 32 in accordance with the count instruction signal transmitted from the DAP 14. Also works as. In addition, in accordance with the music reproduction instruction signal transmitted from the DAP 14, the piano side music data 28 stored in the storage unit 26 is also output from the audio output unit 32 to function as a music reproduction unit that reproduces a music including an accompaniment music. .

  In addition to the above, the electronic piano 12 has a display unit (not shown) for displaying information about the electronic piano 12.

  Next, each component included in the DAP 14 will be described. The DAP 14 operates using an operating system such as Android (registered trademark), and can play various music data and install and execute various applications. In the present embodiment, the DAP 14 is assumed to operate with an application corresponding to the accompaniment mode of the electronic piano 12. In the application, when the performer selects an accompaniment tune, the accompaniment tune is not immediately reproduced but is in a reproduction standby state.

  Like the communication unit 20 of the electronic piano 12, the communication unit 40 includes, for example, a USB interface and the like, and is provided to communicate with the electronic piano 12. Like the communication unit 20, the communication unit 40 may be a wireless communication interface such as a Bluetooth adapter.

  The storage unit 42 includes a ROM and a RAM (Random Access Memory), and stores a program for controlling each unit of the DAP 14. Further, the storage unit 42 stores a plurality of DAP-side music data 44 which can be arbitrarily stored and deleted by the performer. These DAP-side music data 44 may be purchased from, for example, a music data sales site on the Internet, or may be extracted from a commercially available CD (Compact Disc) or the like. Alternatively, an application including a plurality of music piece data suitable as an accompaniment piece may be installed in the DAP 14 to store the plurality of music piece data in the storage unit 42 as the DAP side music piece data 44. The DAP side music data 44 can be used as an accompaniment music in the accompaniment mode of the electronic piano 12.

  Further, the storage unit 42 stores the DAP side count sound data 46. The user can also arbitrarily store and delete the DAP side count sound data 46, and a plurality of DAP side count sound data 46 may be stored. For example, a performer may download various types of count sound data (for example, drum stick sound or electronic click sound data) from the Internet, or install an application including a plurality of count sound data. The count sound data of No. may be stored in the storage unit 42 as the DAP side count sound data 46.

  The display unit 48 includes, for example, a liquid crystal display, and displays various kinds of information regarding the DAP 14. The display unit 48 is also used when counting is performed in the DAP 14.

  The operation unit 50 is composed of, for example, a touch panel or the like, and is for inputting a player's instruction to the DAP 14. In particular, the operation unit 50 is used when the performer selects a music piece to be reproduced. In this embodiment, not only the DAP side music data 44 but also the piano side music data 28 can be selected as the music to be reproduced by the operation unit 50. Information relating to the piano-side music data 28 stored in the electronic piano 12, for example, a music list or metadata (including tempo information) of each piano-side music data 28 is transmitted to the DAP 14 via the communication unit 20 in advance, for example. And is stored in the storage unit 42. The operation unit 50 is also used when the performer selects the count sound data used for executing the count. In the present embodiment, not only the DAP side count sound data 46 but also the piano side count sound data 30 can be selected as the music to be reproduced by the operation unit 50.

  The audio signal output unit 52 is composed of, for example, a line-out terminal, is read from the storage unit 42 under the control of the control unit 54, which will be described later, and is DA-converted by a DAC (not shown). It is for outputting a sound signal of the count sound data 46. In this embodiment, the audio signal output unit 52 is connected to the electronic piano 12 via an audio cable, and the audio signal of the DAP-side music data 44 is output from the audio output unit 32 of the electronic piano 12. Alternatively, an external amplifier and an external speaker can be connected to the audio signal output unit 52, and the DAP-side music data 44 and the like may be output from the external speaker. The DAP side music data 44 and the DAP side count sound data 46 may be transmitted to the electronic piano 12 via the communication unit 40 and output from the voice output unit 32.

  The control unit 54 is composed of, for example, a system-on-chip, and controls each unit of the DAP 14 according to a program stored in the storage unit 42. Further, as shown in FIG. 1, the control unit 54 also functions as a count execution control unit 56, a music reproduction control unit 58, and a communication delay time calculation unit 60. Each of these functions will be described below.

  When the accompaniment trigger signal is received from the electronic piano 12, the count execution control unit 56 performs control for executing a count for notifying the player of the reproduction start timing of the preselected accompaniment tune. Specifically, the count execution control unit 56 performs control for executing a count in either the electronic piano 12 or the DAP 14. The performer can set in advance which of the electronic piano 12 and the DAP 14 is to perform the counting. As the count sound data to be used, when the piano-side count sound data 30 is selected by the player, counting is executed in the electronic piano 12, and when the DAP-side count sound data 46 is selected by the player, in the DAP 14. Counting is performed.

  When the DAP 14 executes counting, the count execution control unit 56 reads the audio signal of the DAP-side count sound data 46 from the storage unit 42 and causes the audio signal output unit 52 to output the audio signal a plurality of times (three times in the present embodiment). . The output intervals of the plurality of DAP side count sound data 46 are determined based on the tempo of the accompaniment tune previously selected by the performer. Thereby, the performer can grasp not only the start timing of the accompaniment song but also the tempo of the accompaniment song. The tempo of the accompaniment music is included in the metadata of each DAP-side music data 44, and the count execution control unit 56 determines the tempo of the accompaniment music from the metadata of the DAP-side music data 44 selected as the accompaniment music. To get.

  The method of executing the count in the DAP 14 may be another method. For example, instead of or in addition to the above-described sound count, the count execution control unit 56 may blink the display unit 48 at the maximum luminance of all pixels. Of course, the blinking interval is determined based on the tempo of the selected accompaniment tune. As a result, the player can visually recognize the accompaniment start timing and the accompaniment tempo without looking into the display unit 48, that is, while maintaining the performance posture. Alternatively, assuming that the DAP 14 is carried by the performer, the count execution control unit 56 uses the vibrator function provided in the DAP 14 to vibrate the DAP 14 at intervals based on the tempo of the accompaniment tune. You may allow it.

  When the electronic piano 12 executes counting, the count execution control unit 56 transmits a count instruction signal for causing the electronic piano 12 to execute counting to the electronic piano 12. When the count instruction signal is received, the control unit 34 of the electronic piano 12 reads the piano-side count sound data 30 from the storage unit 26 and causes the sound output unit 32 to output the count sound data 30 multiple times. Of course, the output intervals of the plurality of piano-side count sound data 30 are determined based on the tempo of the accompaniment tune selected by the player in advance.

  When the electronic piano 12 performs counting and the DAP-side music data 44 is selected as the accompaniment music, the electronic piano 12 does not have information indicating the tempo of the accompaniment music, and thus the control unit 34 causes the accompaniment music. I cannot grasp the tempo of the song. Therefore, in this case, the count execution control unit 56 transmits the tempo information indicating the tempo of the accompaniment song to the electronic piano 12, in addition to the count instruction signal. Upon receiving the count instruction signal and the tempo information, the control unit 34 causes the audio output unit 32 to output the piano-side count sound data 30 multiple times at intervals based on the tempo indicated by the tempo information. When the electronic piano 12 performs counting and the piano-side music data 28 is selected as the accompaniment music, information identifying the accompaniment music is transmitted to the electronic piano 12 when the accompaniment music is selected in the DAP 14. To be done. Then, the control unit 34 of the electronic piano 12 acquires the tempo of the accompaniment tune from the metadata of the piano-side music data 28 selected as the accompaniment tune.

  The count execution control unit 56 does not execute the above-described control for executing the count when receiving the immediate reproduction trigger from the electronic piano 12.

  The music reproduction control unit 58 executes music reproduction control for reproducing the DAP side music data 44 or the piano side music data 28. When the musical piece reproduction control unit 58 receives the accompaniment trigger signal from the electronic piano 12, the musical piece reproduction control unit 58 performs control for reproducing the selected accompaniment music after the count execution by the control of the count execution control unit 56.

  When the DAP-side music data 44 is selected as the accompaniment music, the music reproduction control unit 58 reads the selected DAP-side music data 44 from the storage unit 42, and after the count is executed, the DAP-side music data 44 The audio signal is output from the audio signal output unit 52. That is, the accompaniment music is reproduced. In this case, the music reproduction control unit 58 calculates the count time required for count execution based on the tempo information included in the selected DAP-side music data 44, and after the calculated count time has elapsed from the time when the accompaniment trigger was received. Start playing the accompaniment tune.

  When the piano-side music data 28 is selected as the accompaniment music, the music reproduction control unit 58 transmits a music reproduction instruction signal for reproducing the piano-side music data 28 to the electronic piano 12. The music reproduction instruction signal includes information for specifying the piano-side music data 28 to be output among the plurality of piano-side music data 28, and an output command for outputting the piano-side music data 28. When the music reproduction instruction signal is received, the control unit 34 of the electronic piano 12 reads out the specified piano-side music data 28 from the storage unit 26 and causes the audio output unit 32 to output it. That is, the accompaniment music is reproduced. Also in this case, the music reproduction control unit 58 needs to perform counting based on the tempo information of the selected piano-side music data 28 (the information is stored in advance in the storage unit 42 of the DAP 14 as described above). The time is calculated, and the music reproduction instruction signal is transmitted to the electronic piano 12 at a timing based on the calculated time.

  When receiving the immediate reproduction trigger from the electronic piano 12, the music reproduction control unit 58 immediately starts the reproduction of the preselected music. When the selected music is the DAP-side music data 44, the music reproduction control unit 58 causes the audio signal output unit 52 to immediately output the audio signal of the DAP-side music data 44 when the immediate reproduction trigger is received. When the preselected music is the piano-side music data 28, the music reproduction control unit 58 immediately transmits the music reproduction instruction signal to the electronic piano 12 when receiving the immediate reproduction trigger.

  Even if the performance mode of the electronic piano 12 is the accompaniment mode, the player may want to listen to the music without playing it in order to confirm the music to be played from now on. In such a case, it is troublesome that the counting is performed every time the music is viewed. Therefore, the electronic piano system 10 according to the present embodiment is provided with a function of playing a music piece (accompaniment music) after counting after the playback start instruction and a function of immediately playing a music piece, and So that they can be used properly.

  The communication delay time calculator 60 calculates the communication delay time between the electronic piano 12 and the DAP 14. For example, the communication delay time calculation unit 60 calculates the communication delay time based on the difference between the time when the test data is transmitted to the electronic piano 12 and the time when the return data from the electronic piano 12 that receives the test data is received. Calculate

  Since the electronic piano 12 and the DAP 14 are connected by a communication line, there is a communication delay between them. Especially, when both are connected by a wireless communication line, the communication delay time becomes relatively long. When the device for performing the counting and the device for playing the accompaniment are different from each other, specifically, when the electronic piano 12 performs the counting and the DAP 14 plays the accompaniment, or the electronic piano plays the accompaniment and the DAP 14 When the counting is executed, there is a possibility that the end timing of the count and the start timing of the accompaniment may be shifted due to the communication delay between the two, as will be described later in detail. Therefore, in the present embodiment, in order to reduce the discrepancy between the count end timing and the accompaniment start timing, the music reproduction control unit 58 performs accompaniment based on the communication delay time calculated by the communication delay time calculation unit 60. Adjust the playback start timing of the song.

  With reference to FIG. 2, the details of the method of adjusting the reproduction start timing of the accompaniment piece based on the communication delay time will be described.

  FIG. 2A is a diagram showing the execution timing of each process in the electronic piano 12 and the DAP 14 when the electronic piano 12 executes the count and the DAP 14 reproduces the accompaniment music. Note that in FIG. 2, the horizontal axis represents the time axis.

  First, the electronic piano 12 transmits an accompaniment trigger signal to the DAP 14 at time t1. Assuming that the communication delay time between the electronic piano 12 and the DAP 14 is D, the DAP 14 receives the accompaniment trigger signal at the time t2 after the communication delay time D has elapsed from the time t1. At time t2, the DAP 14 transmits a count instruction signal to the electronic piano 12. At time t3 after the communication delay time D has elapsed from time t2, the electronic piano 12 receives the count instruction signal and starts counting.

  Here, if the count time required for counting is Ct, the electronic piano 12 ends the count at time t5, which is after the count time Ct from time t3. However, if the music reproduction control unit 58 starts the reproduction of the accompaniment music after the count time Ct from the accompaniment trigger reception time (count instruction signal transmission time) t2 without considering the communication delay time D, FIG. As shown in (), the reproduction of the accompaniment tune will be started at time t4 before time t5. That is, the count end time and the accompaniment music playback start time deviate from each other.

  In this case, in order to reduce the time lag, the music reproduction control unit 58 reproduces the accompaniment music after the time (Ct + D) obtained by adding the count time Ct and the communication delay time D has elapsed from the time t2 when the accompaniment trigger was received. To start. As a result, the difference between the count end time and the accompaniment reproduction start time is reduced.

  FIG. 2B is a diagram showing the execution timing of each process in the electronic piano 12 and the DAP 14 when the electronic piano 12 executes the accompaniment song and the DAP 14 executes the count.

  As in the case of FIG. 2A, the electronic piano 12 transmits the accompaniment trigger signal to the DAP 14 at time t1, and the DAP 14 receives the accompaniment trigger signal at time t2. Then, at time t2, the DAP 14 starts counting. The count end time is time t4, which is the count time Ct after the count start time t2. However, if the DAP 14 transmits the music reproduction instruction signal to the electronic piano 12 at the time t4, which is the count end time, the electronic piano 12 receives the music reproduction instruction signal at the communication delay time D from the time t4. At a later time t5, the reproduction of the accompaniment music starts at time t5. That is, the count end time and the accompaniment music playback start time deviate from each other.

  In this case, in order to reduce the time lag, the music reproduction control unit 58 is time t4a which is after the time (Ct-D) obtained by subtracting the communication delay time D from the count time Ct from the time t2 when the accompaniment trigger is received. At, the music reproduction instruction signal is transmitted to the electronic piano 12. Then, the electronic piano 12 receives the music reproduction instruction signal at time t4 after the communication delay time D has elapsed from time t4a, and the reproduction of the accompaniment music starts at time t4 (that is, the count end time in the DAP 14). Becomes As a result, the difference between the count end time and the accompaniment reproduction start time is reduced.

  The schematic configuration of the electronic piano system 10 according to the present embodiment is as described above. Hereinafter, the flow of processing (particularly, processing of the DAP 14) in the electronic piano system 10 will be described according to the flowchart shown in FIG.

  In step S10, the performer operates the operation unit 50 of the DAP 14 to select a music piece. As the song, either the piano-side song data 28 or the DAP-side song data 44 is selected. Further, the performer operates the operation unit 50 of the DAP 14 to select the count sound. Either the piano-side count sound data 30 or the DAP-side count sound data 46 is selected as the count sound. When the music and the count sound are selected, in step S12, the music reproduction control unit 58 suspends the reproduction of the selected music.

  In step S14, the control unit 54 of the DAP 14 determines whether or not a trigger signal has been received from the electronic piano 12. When the trigger signal is received, the type of the received trigger signal is determined. If the trigger signal is not received from the electronic piano 12, the control unit 54 waits until the trigger signal is received.

  In step S14, when the control unit 54 determines that the trigger signal from the electronic piano 12 is received and the trigger signal is the immediate reproduction trigger signal, the process proceeds to step S16.

  In step S16, the music reproduction control unit 58 determines whether the music selected in step S10 is reproduced by the electronic piano 12 or the DAP 14. Specifically, in step S10, when the DAP side music data 44 is selected, it is determined that the music is played by the DAP 14, and when the piano side music data 28 is selected, the music is played by the electronic piano 12. Determined to be played.

  When it is determined in step S16 that the song is played back by the DAP 14, the song playback control unit 58 plays back the song in step S18. When it is determined in step S16 that the music is reproduced on the electronic piano 12, the music reproduction control unit 58 transmits a music reproduction instruction signal for reproducing the music to the electronic piano 12 in step S20.

  In step S14, when the control unit 54 determines that the trigger signal from the electronic piano 12 is received and the trigger signal is the accompaniment trigger signal, the process proceeds to step S22.

  In step S22, the count execution control unit 56 determines whether the count sound selected in step S10 is reproduced by either the electronic piano 12 or the DAP 14. Specifically, in step S10, when the DAP side count sound data 46 is selected, it is determined that the DAP 14 is to count, and when the piano side count sound data 30 is selected, the electronic piano 12 is used. It is determined that the count is executed.

  When it is determined in step S22 that the count is executed by the DAP 14, the count execution control unit 56 executes the count in the DAP 14 in step S24. Specifically, the audio signal of the DAP side count sound data 46 is output from the audio signal output unit 52.

  When it is determined in step S22 that the electronic piano 12 performs counting, in step S26, the count execution control unit 56 outputs the count instruction signal and tempo information indicating the tempo of the selected music (accompaniment music). It transmits to the electronic piano 12.

  In step S28, when the control unit 34 of the electronic piano 12 receives the count instruction signal and the tempo information, it causes the count to be executed based on the tempo information. That is, at the tempo indicated by the tempo information, the piano-side count sound data 30 is output from the audio output unit 32 multiple times.

  In step S30, the music reproduction control unit 58 determines whether the music (accompaniment music) selected in step S10 is reproduced by the electronic piano 12 or the DAP 14. Specifically, in step S10, when the DAP side music data 44 is selected, it is determined that the accompaniment music is reproduced by the DAP 14, and when the piano side music data 28 is selected, the accompaniment is performed by the electronic piano 12. Determine that the song is played.

  When it is determined in step S30 that the accompaniment tune is reproduced by the DAP 14, in step S32, the music reproduction control unit 58 continues to play the accompaniment tune selected in step S10 after executing the count in step S24 or step S28. To play. When the count is executed by the electronic piano 12 (through step S28), the music reproduction control unit 58 sets the communication delay time between the electronic piano 12 and the DAP 14 as described with reference to FIG. Playback of the accompaniment is started at the timing considered.

  When it is determined in step S30 that the accompaniment tune is reproduced by the electronic piano 12, in step S34, the music reproduction control unit 58 follows the execution of the count in step S24 or step S28, and then the accompaniment selected in step S10. A music reproduction instruction signal for reproducing the music is transmitted to the electronic piano 12. When the count is executed by the DAP 14 (through step S24), the music reproduction control unit 58 considers the communication delay time between the electronic piano 12 and the DAP 14 as described with reference to FIG. The music reproduction instruction signal is transmitted at a timing.

  According to the electronic piano system 10 described above, in the state where the accompaniment music is selected in advance in the DAP 14 and the reproduction of the accompaniment music is temporarily waited, the accompaniment music of the accompaniment music is played according to the operation of the performer by the performer. A count indicating the start timing and tempo is executed. Then, the accompaniment tune is reproduced subsequently after the execution of the count. Therefore, the performer can perform the counting and play the accompaniment in the playing posture. As a result, the performer can perform a suitable performance from the beginning of the music. Further, according to the present embodiment, since the performer has already taken the playing posture at the time of starting the counting, the player can listen to the count firmly, and sufficiently grasp the tempo of the accompaniment tune and sufficiently prepare for the performance. Will be possible.

<Second Embodiment>
FIG. 4 shows a schematic configuration diagram of an electronic piano 70 according to the second embodiment of the present invention. The first embodiment relates to the electronic piano system 10 including the electronic piano 12 and the DAP 14, but the second embodiment includes the DAP module 72 as the music reproduction control module corresponding to the DAP 14 of the first embodiment. This relates to the built-in electronic piano 70. The electronic piano 70 is configured to include, in addition to the DAP module 72, a piano module 74 as a musical instrument module that exhibits a function as an electronic piano (that is, corresponds to the electronic piano 12 in the first embodiment).

  Since each constituent element included in the DAP module 72 is equivalent to each constituent element included in the DAP 14 in the first embodiment, each constituent element is denoted by the same reference numeral as in FIG. 1, and a description thereof will be omitted. Since the DAP module 72 is built in the electronic piano 70, the operation unit 50 is used to input not only the player's instruction to the DAP module 72 but also the player's instruction to the piano module 74. Further, on the display unit 48, in addition to the information about the DAP module 72, the information about the piano module 74 is displayed.

  Since each component included in the piano module 74 is equivalent to each component included in the electronic piano 12 in the first embodiment, the same reference numerals as those in FIG. 1 are attached to each component, and the description thereof will be omitted. . As described above, the instruction to the piano module 74 is input by the operation unit 50 of the DAP module 72, and the information about the piano module 74 is displayed on the display unit 48 of the DAP module 72. The operation unit 24 and the display unit (not shown) included in the electronic piano 12 in the embodiment are omitted.

  The embodiment according to the present invention has been described above, but the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  10 electronic piano system, 12, 70 electronic piano, 14 DAP, 20, 40 communication unit, 22 performance operating unit, 24, 50 operating unit, 26, 42 storage unit, 28 piano side music data, 30 piano side count sound data, 31 sound source circuit, 32 audio output section, 34, 54 control section, 44 DAP side music data, 46 DAP side count sound data, 48 display section, 52 audio signal output section, 56 count execution control section, 58 music reproduction control section, 60 communication delay time calculation part, 72 DAP module, 74 piano module.

Claims (6)

An electronic musical instrument system comprising an electronic musical instrument and a music reproduction control device communicatively connected to the electronic musical instrument,
The electronic musical instrument is
A trigger transmission unit for transmitting a first trigger signal to the music reproduction control device in response to an operation on the performance operation unit by a player,
Including,
The music reproduction control device,
A count execution control unit which, when receiving the first trigger signal, performs a control for executing a count for notifying the performer of the reproduction start timing of the accompaniment music reproduced along with the performance,
A music reproduction control unit that controls the reproduction of the accompaniment music after the counting is executed,
including,
An electronic musical instrument system characterized in that The trigger transmission unit transmits a second trigger signal different from the first trigger signal to the music reproduction control device in accordance with an operation by the performer,
The count execution control unit does not control to execute the count when the second trigger signal is received,
The music reproduction control unit immediately performs control to reproduce a preselected music when the second trigger signal is received,
The electronic musical instrument system according to claim 1, wherein: The music reproduction control device,
Further comprising a communication delay time calculator for calculating a communication delay time between the electronic musical instrument and the music reproduction control device,
Any one of the case where the electronic musical instrument performs the counting and the musical composition reproduction control device reproduces the accompaniment tune, and the electronic musical instrument reproduces the accompaniment tune and the musical composition reproduction control device executes the count. In this case, the music reproduction control unit adjusts the reproduction start timing of the accompaniment music based on the calculated communication delay time,
The electronic musical instrument system according to claim 1, wherein the electronic musical instrument system comprises: When the electronic musical instrument executes the count and the music reproduction control device reproduces the accompaniment tune, the count execution control unit receives the count instruction signal and the accompaniment tune when the first trigger signal is received. Send tempo information indicating the tempo to the electronic musical instrument,
The electronic musical instrument is
When receiving the count instruction signal and the tempo information, including a count execution unit for performing the count based on the tempo indicated by the tempo information,
The electronic musical instrument system according to any one of claims 1 to 3, characterized in that: A music reproduction control device communicatively connected to an electronic musical instrument,
When a first trigger signal transmitted from the electronic musical instrument is received in response to an operation performed by the player on the performance operation unit, a count is performed to notify the player of the reproduction start timing of the accompaniment music that is reproduced along with the performance. A count execution control unit for controlling
A music reproduction control unit that controls the reproduction of the accompaniment music after the counting is executed,
A music reproduction control device comprising: An electronic musical instrument comprising a musical instrument module and a music reproduction control module communicatively connected to the musical instrument module,
The instrument module is
A trigger transmission unit that transmits a first trigger signal to the music reproduction control module in response to an operation on the performance operation unit by a player,
Including,
The music reproduction control module,
A count execution control unit which, when receiving the first trigger signal, performs a control for executing a count for notifying the performer of the reproduction start timing of the accompaniment music reproduced along with the performance,
A music reproduction control unit that controls the reproduction of the accompaniment music after the counting is executed,
including,
An electronic musical instrument characterized by that.

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