JP2004144811A - Musical piece playing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a musical piece playing system that enables a plurality of mobile communication terminals to easily acquire musical piece data to be reproduced respectively when the plurality mobile communication terminals reproduce a single musical piece. <P>SOLUTION: A musical piece playing system comprises a 1st mobile communication terminal and at least one 2nd mobile communication terminal both having a musical piece reproducing means. The 1st mobile communication terminal has: a storage means of storing the musical piece data; a part information generating means of generating part information for reproducing the musical piece data according to the number of mobile communication terminals; a musical piece data generating means of generating musical piece data that 2nd mobile communication terminals reproduce respectively by using the part information generating means; and a transmitting means of transmitting the musical piece data generated by the musical piece data generating means. Consequently, each mobile communication terminal easily acquires the musical piece data. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a music performance system using a portable communication terminal.
[0002]
[Prior art]
The maximum number of simultaneous pronunciations of the sound source of the portable communication terminal has progressed at a rapid rate from about 4 sounds to 40 sounds, and accordingly, distribution contents having a large number of simultaneous pronunciations have become available. On the other hand, as a method of enjoying music performance using a plurality of mobile communication terminals, for the distribution content of the same music, the data of individual parts in charge of each is acquired, and the owner of the mobile communication terminal obtains data of each part. It was common to start playing with their faces turned off. This was also effective as a method for reproducing the latest distributed content having a large number of parts even in a portable communication terminal having a sound source with a small maximum number of pronunciations a year ago. In a karaoke system, a technique is disclosed in which a management device distributes the same music to a plurality of karaoke terminals and enjoys a duet music. (For example, refer to Patent Document 1.)
[0003]
[Patent Document 1]
JP-A-10-39879 (pages 2 to 8, FIG. 1)
[0004]
[Problems to be solved by the invention]
However, in the conventional method, it is necessary to obtain the data of each part in charge for each mobile communication terminal, and thus there is a problem that obtaining the data is complicated.
In addition, since the owner of the portable communication terminal starts the performance by looking at each face, if someone mistakes the start timing of the performance, the reproduction of the music is shifted, and it is difficult to correct the music reproduction.
[0005]
Accordingly, the present invention has been made in view of the above-described problems, and it is easy to obtain music data even when performing music by a plurality of mobile communication terminals, and the deviation of the music performance in each mobile communication terminal. It is an object of the present invention to provide a music performance system for preventing music.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention proposes the following means.
The invention according to claim 1 comprises a first mobile communication terminal and at least one second mobile communication terminal both having music playback means for playing music data, and the first mobile communication terminal stores the music data. Storage means, a part information generating means for generating reproduction part information for the music data in accordance with the number of mobile communication terminals, and music data reproduced by each of the second mobile communication terminals by the part information generating means. There is proposed a music performance system having music data generating means for generating, and transmitting means for transmitting music data generated by the music data generating means.
[0007]
According to the present invention, the reproduction part information is generated according to the number of portable communication terminals by the operation of the part information generation means. In addition, the operation of the music data generation means generates music data for each portable communication terminal from the reproduction part information. Then, this information is transmitted to each portable communication terminal by the operation of the transmission means. Therefore, in each portable communication terminal, acquisition of music data to be reproduced becomes easy.
[0008]
The invention according to claim 2 comprises a first portable communication terminal and at least one second portable communication terminal both having a music reproducing means for reproducing music data and a storage means for storing music data, Means for generating reproduction part information for the music data in accordance with the number of mobile communication terminals, and whether or not the second mobile communication terminal has music data to be reproduced. Transmitting means for transmitting a music data confirmation signal to be confirmed, wherein the first mobile communication terminal responds to the music data confirmation signal by using a response signal to the portable communication terminal which does not have the music data to be reproduced. Proposes a music performance system that transmits the music data and the reproduction part information and, for a portable communication terminal having the music data, transmits only the reproduction part information. To have.
[0009]
According to the present invention, it is determined whether or not there is music data to be reproduced based on a response signal to the music data confirmation signal. For mobile communication terminals that already have music data to be played, playback part information is transmitted instead of music data. Therefore, when performing the same music with different parts, it is not necessary to transmit music data many times.
[0010]
According to a third aspect of the present invention, in the music playing system according to the first or second aspect, the part information generating means is capable of causing the transmitting means to reproduce the music for each of the second mobile communication terminals. A music performance system that transmits a reproduction confirmation signal for confirming whether the number of portable communication terminals is reproducible based on a response signal to the reproduction confirmation signal is proposed.
[0011]
According to the present invention, the number of portable communication terminals that can be reproduced is determined by the response signal to the reproduction confirmation signal. Then, reproduction part information for the music data to be reproduced by each portable communication terminal is generated according to this number. Therefore, an appropriate part configuration can be made based on the tune of the music data to be reproduced and the number of portable communication terminals that can be reproduced.
[0012]
According to a fourth aspect of the present invention, in the music performance system according to any one of the first to third aspects, the transmitting unit transmits reproduction start information of the music, and based on the reproduction start information, A music performance system is proposed in which first and second mobile communication terminals start reproducing music data generated by the music data generating means.
[0013]
According to the present invention, the reproduction start information is transmitted to each portable communication terminal by the operation of the transmission means. Then, since each portable communication terminal starts reproducing the music data of each part based on this signal, there is no deviation in the reproduction of the music between the portable communication terminals.
[0014]
According to a fifth aspect of the present invention, in the musical sound performance system according to any one of the first to fourth aspects, the transmitting means periodically starts reproducing the music data generated by the music data generating means. A music performance system that transmits playback time information to the second mobile communication terminal and corrects the playback time of music data being played back based on the playback time information received by the second mobile communication terminal. are doing.
[0015]
According to the present invention, the reproduction time information is transmitted periodically after the reproduction of the music data is started by the operation of the transmission means. Therefore, by comparing this information with the music data being reproduced by each mobile communication terminal, the reproduction time of the second mobile communication terminal can be corrected. Also, by periodically correcting the deviation of the music reproduction with the first mobile communication terminal, the deviation of the music reproduction can be corrected as a whole.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a music playing system according to an embodiment of the present invention will be described in detail with reference to FIGS.
As shown in FIG. 1, the music performance system according to the embodiment of the present invention includes a mobile communication terminal as a master (hereinafter, referred to as master terminal 100) and a plurality of mobile communication terminals as slaves controlled by the mobile communication terminal (hereinafter, slave). Terminal 200). As shown in FIG. 2, the system configuration of each mobile communication terminal is a CPU (Central Processing Unit) 1, a sound source 2, an input unit 3, a ROM (Read Only Memory) 5, and a RAM (RAM). : Random Access Memory) 6, a display unit 7, and a communication I / F (I / F: Interface) 8.
[0017]
The CPU 1 controls the entire system of the mobile communication terminal via the data bus. The sound source 2 processes the transmitted music data, converts it into an audio signal, and outputs it to a speaker to reproduce a musical sound. The input unit 3 inputs characters, numbers, and symbols using keys and the like, and also inputs music data and the like from an external device such as a personal computer using an interface cable or the like.
[0018]
The ROM 5 is a read-only storage device that stores programs for controlling the entire system, preset music data, and the like. The RAM 6 is a storage device for temporarily storing music data input from an external device via the input unit 3 and data input from the master terminal 100 via the communication I / F 8. The display unit 7 displays characters, numbers, symbols, and the like input from the input unit 3 and other information. The communication I / F 8 transmits and receives information between the master terminal 100 and the slave terminal 200. In the present embodiment, any communication means may be used, but in consideration of short-range communication, BlueTooth or the like is preferable.
[0019]
Next, the sound source system according to the present embodiment will be described in detail.
As shown in FIG. 3, the sound source system according to the present embodiment includes an I / F unit 11, a FIFO (FIFO: First in First out) 12, a sequencer 13, a sound source unit 14, a DAC 15, a speaker 16, a counter 17, , A clock generator 18, a CPU 1, a RAM 6, and a ROM 5. FIG. 3A shows a sound source system configuration on the master terminal 100 side, and FIG. 3B shows a sound source system configuration on the slave side. The components other than the CPU 1, the RAM 6, and the ROM 5 in FIG. 3 constitute the sound source 2 in FIG.
[0020]
The I / F 11 exchanges data between a system control system and a block for sound reproduction including the sequencer 13 and the sound source unit 14. The FIFO 12 controls data storage and output, and in this method, data is output in the order of storage. The sequencer 13 is a device or software for interpreting music data such as MIDI data (MIDI: Musical Instrument Digital Interface) having information such as a pitch, a sound length, a strength, and a timbre, and sending the music data to the sound source unit 14.
[0021]
The sound source unit 14 generates a signal based on the sound source parameters input from the sequencer 13 and outputs the signal to a DAC (DAC: Digital / Analog Converter). The DAC 15 converts a digital signal into an analog signal, and outputs the analog signal to the speaker 16 via an amplifier (not shown). The counter 17 is a counting circuit that outputs a signal whose state changes with time according to a clock signal input or the like. The clock generator 18 generates a clock signal from the tempo data extracted from the music data and the system clock, and outputs the clock signal to the counter 17.
[0022]
In the sound source system according to the present embodiment, music data stored in the RAM 6 is output to the sequencer 13 via the I / F 11 and the FIFO 12. After interpreting the data including a plurality of parts in the music data, the sequencer 13 outputs the data to the sound source unit 14. Note that the number of parts that can be sounded simultaneously by the sound source unit 14 has a certain limit, and the number of parts that can be sounded simultaneously is as large as about 40 sounds in the current sound source. And
[0023]
The sequencer 13 interprets tempo data included in the music data, extracts the tempo data, and outputs the extracted tempo data to the clock generator 18. On the other hand, a system clock is input to the clock generator 18, and the clock generator 18 generates a clock signal for time management of the sequencer 13 based on the system clock and tempo data. The generated clock signal is input to a counter 17 in the sequencer 13 and counts the clock signal (see FIG. 3A).
[0024]
The counter value is output to the CPU 1 and transmitted to the slave terminal 200 via a communication I / F (not shown). The counter value received by the slave terminal 200 is input to the CPU 1 of the slave terminal 200. The CPU 1 compares the counter value output from the counter 17 of the slave terminal 200 with the counter value transmitted from the master terminal 100, and outputs a tempo control signal to the sequencer 13. The sequencer 13 (see FIG. 3B) changes the tempo of the music data being reproduced in accordance with the input tempo control signal to correct the time information.
[0025]
Next, a procedure for transmitting a music file from the master terminal 100 to the slave terminal 200 will be described with reference to FIGS. In the present invention, as a method of transmitting a music file from the master terminal 100 to the slave terminal 200, a method of transmitting the same music data and part information to all the slave terminals 200 (hereinafter, referred to as the same music file type) And a method of individually transmitting music data for each assigned part to each slave terminal device 200 (hereinafter referred to as a music file individual type).
[0026]
FIG. 4 shows a transmission procedure for the same type of music file. According to this, the master terminal 100 first checks with each slave terminal 200 whether or not it has a target music file (step 101). Next, it waits for response signals from all the slave terminals 200 to determine the completion of reception (step 102). Subsequently, the music file is transmitted only to the slave terminal 200 that has received the response signal that the music file does not have the target music file (step 103). Further, a part is assigned to each slave terminal 200, and the information is separately transmitted (step 104). After the completion of the series of operations is confirmed (step 105), the transmission of the music file is completed.
[0027]
FIG. 5 describes the transmission procedure for the individual music file type. According to this, the master terminal 100 first checks with each slave terminal 200 whether music data can be reproduced (step 201). Next, it waits for response signals from all the slave terminals 200 to determine the completion of reception (step 202). Next, parts are allocated to the slave terminals 200 that have received the response signal that the music data can be reproduced (step 203). A music file is cut out for each channel based on the allocated parts, and music data for each slave terminal 200 is created (step 204). The created music data is transmitted to each slave terminal 200 (step 205), and it is confirmed that the transmission of the music data to all the slave terminals 200 has been completed (step 206), and the transmission of the music file is completed. .
[0028]
Next, processing during a performance will be described with reference to FIG.
When the transmission of the music data from the master terminal 100 to each slave terminal 200 ends, the reproduction start information is subsequently transmitted from the master terminal 100 to each slave terminal 200 (step 301). The master terminal 100 that has transmitted the reproduction start information and the slave terminal 200 that has received the reproduction start information start playing the designated channel in accordance with this signal (steps 302 and 402).
[0029]
When the music data is completed and the music data ends, the performance ends (steps 303 and 403). When the music data has not reached the end, the master terminal 100 checks whether or not the pointer has reached the pointer (step 303). Step 304). The pointers are arranged at appropriate time intervals in the music data, for example, so as to be arranged in an exclusive message of the event data. When the master terminal 100 confirms that the pointer has arrived, it transmits the current clock counter value to the slave terminal 200 (step 305). On the other hand, when the master terminal 100 has not confirmed the arrival of the pointer, the performance is continued according to the other performance data (step 306).
[0030]
When the slave terminal 200 receives the counter value from the master terminal 100, the counter value output from the counter 17 of the slave terminal 200 is compared with the transmitted counter value, and the reproduction of the slave terminal 200 becomes the master. It is determined whether the playback matches the playback of the terminal 100. If the result of the determination is that the reproduction of the slave terminal 200 is behind the reproduction of the master terminal 100 (step 405), the CPU 1 of the slave terminal 200 outputs a tempo control signal to the sequencer 13, A process for increasing the reproduction tempo for a fixed time is performed (step 406).
[0031]
On the other hand, when the reproduction of the slave terminal 200 is advanced with respect to the reproduction of the master terminal 100 (step 405), the CPU 1 of the slave terminal 200 outputs a tempo control signal to the sequencer 13 to Is performed (stop for a fixed time) (step 407). When the reproduction of the slave terminal 200 matches the reproduction of the master terminal 100 or when the reproduction of the slave terminal 200 is corrected, the performance is continued according to the other performance data (step 408).
[0032]
Next, an example of dividing music data in the case of the individual file type will be described.
FIG. 7 shows a first embodiment for dividing music data.
FIG. 7A shows a data structure of general music data. The music data is configured by a set of a duration and an event, which are connected to a series. Here, the duration indicates the time from the start time of the immediately preceding event to the start time of the current event. The event is a note message including a note number (pitch) and a gate time (sound generation time), and a timbre. It consists of settings and exclusive messages.
[0033]
Now, the music data is divided into four channels (chA, chB, chC, chD), and chA and chC are allocated to the slave terminal A200, and chB and chD are allocated to the slave terminal B200, to generate respective music data. The case will be described. First, music data is searched from the beginning, an event of a corresponding channel (for example, chA) is detected, and this is specified together with the previous duration. This process is performed for all music data.
[0034]
After the same processing is performed for the other channels, the duration and the event specified in each channel corresponding to the slave terminal A200 are copied, and as shown in FIG. Connect these. Next, for each duration of the completed data, the duration omitted between the current duration and the immediately preceding duration is added. For the first duration, a process of adding the duration between the start duration and the performance start position is performed. Then, these processes are similarly performed for the slave terminal B200.
[0035]
FIG. 8 shows a second embodiment for dividing music data.
In this embodiment, as shown in FIG. 8A, the music data possessed by the master terminal is divided into chunks (hereinafter, referred to as chunks) for each predetermined channel. The data of each chunk is composed of a channel (number), a tone color, and each performance event, and the performance event is composed of a duration and an event.
[0036]
The music data of each slave terminal is generated from the original music data by, for example, dividing channels A and C for slave terminal A200 and dividing channels B and D for slave terminal B200. Specifically, the chunks of the corresponding channel are copied, and the copied chunks are connected to generate one piece of music data. When generating the music data, data other than the duration and the event (tempo data, tone setting, etc.) is also copied for each slave terminal.
[0037]
The sound source system for reproducing the music data generated in the second embodiment has a configuration as shown in FIG. The feature of the configuration is that a plurality of sequencers 13 and the corresponding FIFO 12 are provided. In the data structure of the second embodiment, since each data is divided into blocks for each channel, the data of each channel is input to the FIFO 12 provided separately, and the music data is separated into a separate sequencer. In addition to the interpretation at 13, the counter 17 manages the time for four channels simultaneously.
[0038]
According to this embodiment, since the master terminal collectively manages the assignment of music data to each slave terminal, the start timing of the performance, the tempo of the performance, and the like, one mobile terminal can be used by one mobile terminal. Even when playing music, it is possible to perform without discomfort.
[0039]
As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and a design change or the like may be made without departing from the gist of the present invention. included. For example, the sound source according to the present embodiment may be a hardware type using an existing sound source IC, or may be processed in a software manner without using the sound source IC. Also, the sound source system may be an FM system, a PCM system, or another system.
[0040]
In the present embodiment, when the master terminal reaches a pointer provided at predetermined time intervals in the music data, the current clock counter value is transmitted to the slave terminal, and the slave terminal has been transmitted. The method of controlling the tempo based on the result of comparing the counter value with the counter value counted by itself has been described.For example, a number is sequentially assigned to the pointer from the top, and the master terminal uses this number as a slave. In addition to transmitting to the terminal, the slave terminal may control the tempo based on the time difference between the number and the current playback position.
[0041]
【The invention's effect】
As described above, according to the present invention, since the master terminal assigns music data to each slave terminal and transmits the same, each slave terminal has an effect that music data can be easily obtained. is there. Further, since only the part information is transmitted to the slave terminals already holding the music data, there is an effect that the management of the music data in each terminal becomes easy.
[0042]
Further, according to the present invention, since the master terminal transmits reproduction start information and reproduction information to the slave terminal to manage reproduction, there is no deviation in start timing and reproduction, and a plurality of portable communication terminals are used. Also in this case, there is an effect that the music can be played faithfully.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of a system according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of a mobile communication terminal according to an embodiment of the present invention.
FIG. 3 is a configuration diagram of a sound source system according to the embodiment of the present invention.
FIG. 4 is a flowchart relating to file transmission in the case of the same music file type according to the embodiment of the present invention.
FIG. 5 is a flowchart relating to file transmission in the case of an individual music file type according to the embodiment of the present invention.
FIG. 6 is a flowchart at the time of reproducing music data according to the embodiment of the present invention.
FIG. 7 is a data configuration diagram of a first embodiment relating to generation of an individual music file.
FIG. 8 is a data configuration diagram of a second embodiment relating to generation of an individual music file.
FIG. 9 is a configuration diagram of a system for reproducing an individual music file according to a second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... CPU, 2 ... Sound source, 3 ... Input part, 5 ... ROM, 6 ... RAM, 7 ... Display part, 8 ... Communication I / F, 11 ... -I / F, 12-FIFO, 13-Sequencer, 14-Sound source unit, 15-DAC, 16-Speaker, 17-Counter, 18-Clock generation unit, 100: master terminal, 200: slave terminal,

Claims (5)

Both the first portable communication terminal and the at least one second portable communication terminal each having a music reproducing means for reproducing music data, the first portable communication terminal storing the music data, and the portable communication terminal Part information generation means for generating reproduction part information for the music data in accordance with the number of music data; music data generation means for generating music data to be reproduced by each of the second mobile communication terminals by the part information generation means; A music transmission system for transmitting music data generated by the music data generation means. Both the first portable communication terminal and the at least one second portable communication terminal each having a music reproducing means for reproducing music data and a storage means for storing music data, wherein the first mobile communication terminal is a portable communication terminal. A part information generating means for generating reproduction part information for the music data in accordance with the number of music data, and transmitting a music data confirmation signal for confirming whether or not the second portable communication terminal has the music data to be reproduced. The portable data terminal having no music data to be reproduced by the first portable communication terminal according to the response signal to the music data confirmation signal. A music performance system for transmitting information and transmitting only the reproduction part information for a mobile communication terminal having the music data. The part information generating means transmits a reproduction confirmation signal for confirming whether or not the music reproduction is possible to each of the second mobile communication terminals, and the transmission means can reproduce the music by a response signal to the reproduction confirmation signal. The music performance system according to claim 1, wherein the number of portable communication terminals is determined. The transmission means transmits music reproduction start information, and the first and second mobile communication terminals start reproducing music data generated by the music data generation means based on the reproduction start information. A music performance system according to any one of claims 1 to 3. The transmitting means periodically transmits reproduction time information to the second mobile communication terminal after the reproduction of the music data generated by the music data generation means starts, and the transmission time information received by the second mobile communication terminal is 5. The music performance system according to claim 1, wherein the reproduction time of the music data being reproduced is corrected based on the reproduction time information.

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