JP2003323173A - Music session system utilizing communication network, and user terminal used for the music session system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mechanism having high scalability in the number of participants and an environment in utilizing a communication network to perform a music session. <P>SOLUTION: In this music session system, a plurality of nodes (user terminal) N1 to N7 are connected in a communicable way through the communication network, and each of the nodes can bidirectionally transmit and receive performance data to/from an adjacent node. Each of the nodes N1 to N7 reproduces data performed by its own instrument and performed data from the adjacent node based on performance and transmits the data performed by its own instrument to the adjacent node. In a node (N2 to N6 of (a), N3, N4 and N6 of (b) and N4 of (c)) to which a plurality of adjacent nodes are connected, further transmits received performance data from a certain adjacent node to different adjacent nodes. The performance data are transmitted at every musical delimitation such as a bar and synchronized with timing corresponding to the delimitation to be processed in each node. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music session system using a communication network for performing a music session by performing bidirectional communication between performer nodes via a communication network.

[0002]

2. Description of the Related Art Conventionally, as a music session method using a communication network, for example, there is a real-time session in which all perform simultaneously. This method can be implemented in a limited network with a sufficient communication band and high reliability, and cannot be used in an environment such as the Internet where networks of various bands coexist. The number of people who can participate in a real-time session depends on the bandwidth of the network.
Participants are limited to users. Furthermore, since the played data are sent to each other immediately, the real-time property is very high, but there is no scalability in scale due to implementation restrictions.

As another technique, there is a session in which music is completed by stacking the music in order. In this method, a certain user starts music, transmits it to another user in a certain order, makes changes, repeats the performance, and conducts a session. In this session, compared to the above-mentioned real-time session, the number of participants is approximately infinite, and thus the session is highly scalable.

However, since the performance is performed in accordance with the one that the previous user has finished playing, the character of the ensemble of playing with the other party is weak. Also, when the last user repeats the performance and sends it back to the first user, it is possible to know the performance and reaction of the later users. We have to wait, and as the number of people increases, the real-time property is lost.

[0005]

SUMMARY OF THE INVENTION In view of such circumstances, an object of the present invention is to provide a mechanism having a high scalability in the number of participants and the environment for conducting a music session using a communication network. To do.

[0006]

According to the present invention, there is provided a music session system in which a plurality of user terminals (N1 to N7) are communicably connected via a communication network, and each user terminal has a performance input means. (2), communication means (4), playback means (3) and control means (1) are provided, and the performance input means (2) inputs own performance data based on the performance at the user terminal, and the communication means (4) bidirectionally transmits and receives performance data to and from an adjacent user terminal connected to the user terminal, and the reproducing means (3) receives the input performance data and the received performance data. Play,
The control means (1; DC) is a user terminal to which a plurality of adjacent user terminals are connected so as to transmit the input own playing data to the adjacent user terminals [for example, FIG. 2 (a):
N2 to N6, (b): N3, N4, N6, (c): N
[4] further provides a music session system [claim 1] using a communication network for controlling communication means so as to transmit performance data received from a certain adjacent user terminal to another adjacent user terminal. . Note that parentheses represent reference symbols or terms in Examples described later, and the same applies below.

In the music session system according to the present invention, the control means (1) controls the communication means (4) to transmit the inputted performance data of the player's own machine at each musical section (DC) and receives the data. The performance data is processed (TC) in synchronism with the musical timing corresponding to the musical break (claim 2).

In the music session system according to the present invention, the control means (1) adds chord information to the inputted own performance data, and the own performance data added with the chord information is transmitted from the communication means (4). It is configured to be transmitted (CP) to the adjacent user terminal [claim 3]. The control means (1) is also configured to correct the received performance data so as to match the code of the inputted own performance data [claim 4].

In the music session system according to the present invention, the control means (1) reduces the volume data value in the received performance data, and the performance data with the reduced volume data value is adjacent to the communication means (4). It is configured to be transmitted (VC) to the user terminal [Claim 5].

Further, according to the present invention, a user terminal device used in a music session system in which a plurality of user terminals (N1 to N7) are communicatively connected via a communication network, is used for playing at the user terminal. Performance input means (2) for inputting performance data based on the player's own machine, and communication means (4) for bidirectionally transmitting and receiving performance data between an adjacent user terminal connected to the user terminal. And a reproducing means (3) for reproducing the own performance data and the received performance data, and a user terminal to which a plurality of adjacent user terminals are connected so as to transmit the input own performance data to the adjacent user terminal. [For example, FIG. 2 (a):
N2 to N6, (b): N3, N4, N6, (c): N
4] further includes a control means (1) for controlling the communication means (4) so as to transmit the received performance data from a certain adjacent user terminal to another user terminal. A terminal device (claim 6) is provided.

[Operation of the Invention] According to the music session system using the communication network of the present invention, each performer (user) is connected to an adjacent user terminal whose user terminal (node) is directly connected on the network. A session is conducted by exchanging performance data bidirectionally with the performer. At this time, since the performance data of the user terminal which is not directly connected is relayed and propagated by the user terminal which is interposed between the user terminal and the own user terminal, theoretically, the performance data can be bidirectionally exchanged with any number of performers. It becomes possible to obtain high scalability and high real-time property with neighboring user terminals.

According to the present invention, the performance data is sent to the adjacent user terminal for each musical segment, and the performance data is processed in synchronization with the musical timing, thereby delaying the propagation of the network, variation in delay, and node. Since the differences in the playback tempo for each music are absorbed in synchronization with the musical timing, continuous playback of the output device is not hindered, and the rhythmic and rhythmic breakdown of the music can be prevented. it can.

In the present invention, performance information and chords (chords)
By sending information at the same time, even if performance data of different tonality arrives from a plurality of user terminals at the same time, it is possible to correct other performance data by converting it into a code determined by the user terminal. By configuring, it is possible to avoid a musical harmony breakdown.

According to the present invention, the performance data from the adjacent user terminal is transferred to another adjacent user terminal with its volume data value reduced, and the volume data value is gradually reduced each time it is transferred. , By limiting the stacking of performance data by configuring to stop the transfer of performance data of the sound whose volume data value has been reduced below a predetermined value near zero, and when the system is organized by a large number of users. It is possible to avoid crowding of performance data. Further, since the performance data reaches a user terminal far away according to the volume of the performance volume, it can be used as a performance expression.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are merely examples, and various modifications can be made without departing from the spirit of the present invention.

[System Overview] FIG. 1 shows the configuration of each user terminal (node) in a music session system using a communication network according to an embodiment of the present invention. Each performer (user) PL uses the user terminal NA having the elements shown in the figure, and uses the user terminals NB, N having the same configuration.
Conduct a network session with other performers using C, ND, .... Each user terminal system NA (NB, N
C, ND, ...) are called “nodes” and are composed of a control device 1, an input device 2, an output device 3, a network input / output interface (I / F) 4, a buffer device 5, and the like.

The input device 2 may be in any form, such as a performance input device (a musical instrument such as a keyboard, an operator such as a mouse or a joystick) for inputting performance data of the performance of the performer PL. , Automatic play may be included.) Or a setting input device for setting another node to be connected to the node NA. The network input / output I / F 4 is connected to other nodes NB, NC, ND, ... Via a communication network such as the Internet.
Is an interface device for communicating information with each other, and includes a plurality of interface devices 41, 42, 43, ...
Consists of. The other nodes NB, NC, ND, ...
It has the same configuration as the node NA, and can exchange performance data with further other nodes via the communication network.

The buffer device 5 is shown in FIG.
As shown by 2, 53, ..., each network input / output I /
Each of F41, 42, 43, ... Is provided on the reception output side. As a result, the other nodes NB, NC, ND, ...
D, ... Performance data of other players that have flowed in are respectively input from the I / Fs 41, 42, 43, ..., and temporarily stored in the buffer devices 51, 52, 53 ,. Can be introduced to the side.

The output device 3 is a reproducing device for reproducing the performance data input to the node NA and outputting the performance sound through a speaker, the state of each part in the node, and all nodes constituting the session system. It is composed of a display device for displaying a connection state of (1) and a visualization of input performance data on a display (not shown). Performance data reproduced (performed) by the output device (reproduction device) 3 is sequentially input from the performance data from the performance input device 2 based on the performance of the performer PL or from the buffer devices 51, 52, 53 ,. Playback data including the performance data of other players is continuously played back at a certain tempo by the playback device 3.

Then, the control unit 1 includes a central processing unit (C
PU) and a storage device (including a read-only memory (ROM), a random access memory (RAM), an external storage device, etc.), and according to the performance data input / output control program stored in the storage device, the CPU stores the node NA Control each part.

The control device 1 is functionally composed of a performance data relay section DC, a performance data processing section DP, and a timing control section T.
The performance data relay unit DC is composed of functional modules such as C.
2, 43, ...) And the buffer device 5 (51, 52, 5)
3, ...), corresponding to one or more other nodes set to be connected to the node NA concerned.
The F4 and the buffer device 5 are activated, and the performance data input / output by each device 2-5 is relayed. Timing control unit T
The C has a function of synchronizing the performance data string from the adjacent node with a predetermined musical timing and performing a reproduction process and a transfer process.

The performance data processing section DP is introduced from the own performance data generated by the performance input device 2 based on the performance operation of the performer PL and the buffer device 5 according to the instruction of the performance data relay section DC. In addition to converting performance data from an adjacent node into performance data suitable for reproduction processing and network transmission and sending it to the reproduction device 3 and the input / output I / F 4, the chord progression generation unit CP provided in the processing unit DP.
The volume control section VC and the like have functions such as adding chord information to the performance data of the player's own machine and changing volume information of adjacent performance data.

Each node NA, NB, NC, ...
It may be possible to communicate with a server (not shown) that manages the connection status of each node that constitutes this music session system. In that case, the connection state between each node (client) is from the server to each node (client) of the system. )
Can be displayed on the display of the output device (display device) 3 of each node.

In the music session system according to the present invention, each performer uses his own node to interactively exchange performance data with the nodes of other performers connected on the communication network. You can have a session with the performers. At this time, the performance data of the node which is not directly connected to the own node is relayed via the node existing between the both nodes. Therefore, theoretically, performance data can be bidirectionally exchanged with an unlimited number of player nodes.

[Procedure of Session] Next, a procedure of actually performing a session in the music session system according to the embodiment of the present invention will be described. When performing a session including a certain node (NA) on the communication network, the connection setting with other nodes (NB, NC, ND, ...) Which should be connected to the node is set by the input device 1. input.
When it is possible to communicate with the server, the performance data relay unit DC of the control device 1 notifies the server (not shown) of the node connection in response to this setting input. Then, the performance data relay unit DC further activates the corresponding network input / output I / F 4 (41, 42, 43, ...) And the connection is set by using the activated network input / output I / F 4. Also, the node is connected to another node so that bidirectional communication is possible.

There are various variations in the connection form between such nodes. FIG. 2 shows an example of organization of system connections when the number of nodes = “7”. FIG. 2 (a) shows all 7 nodes N1 to N7 connected in cascade, and in FIG. 2 nodes N
Other nodes N1, N2, N5 to N7 are randomly branched and connected around 3, N4, and in FIG.
All the other nodes N1 to N3 are connected to a certain node N4.
A star type configuration in which N5 to N7 are concentrated and connected is adopted.

In order to organize a music session system by connecting a plurality of nodes to each other, as shown in FIG. 2, the connection shape of the link transmission line connecting the nodes is open. It is desirable that the closed loop is not formed. By configuring the link shape to be open in this way, the performance data relay unit DC in the control device 1 in each node can determine the performance data transmitted from the node and the destination node by a simple logic. You can

Here, the outline of the music session system according to the present invention will be described with reference to FIG. In this system, a plurality of nodes N1 to N7 are communicatively connected via a communication network, and each node can bidirectionally transmit and receive performance data with an adjacent node. In each of the nodes N1 to N7, the own performance data based on the performance and the performance data from the adjacent node are reproduced, and the own performance data is transmitted to the adjacent node. In addition, a node to which a plurality of adjacent nodes are connected [N2 to N6 of (a),
In N3, N4, N6 of (b) and N4 of (c), the received performance data from a certain adjacent node is transmitted to another adjacent node in addition to the own-machine performance data. The performance data is transmitted for each musical break such as a bar, and is processed in each node in synchronization with the timing corresponding to this break.

A more detailed description will be given below. In this music session system, the performance data (own performance data) input from the input device 2 of a certain node is output from the playback device 3 in real time, and the node connected to the node (“adjacent node”). Or "connection node"
Call. ) Is sent to all. The performance data that has arrived at the node from all the connection nodes is output from the playback device 3 of the node. For example, in the organization example of FIG. 2A, the own performance data of the node N4 is the node N4.
The performance data sent to all the nodes N3 and N5 connected to the node N3 and reaching the node N4 from all the connection nodes N3 and N5 are output from the playback device 3 of the node N4.

Further, in a node having a plurality of connecting nodes like the above-mentioned node N4, the performance data arrived at the node from a certain connecting node is transferred to all the other connecting nodes via the node. To be done. Similarly, FIG.
The node N4 of (a) to (c) will be described as an example. In FIG. 2A, the performance data that has arrived from one connection node N3 to the node N4 is connected to the other connection node N5 via the node N4. And the performance data from the connection node N5 is transferred to the connection node N3.

In the case of FIG. 2 (b), the performance data coming from the connection node N1 to the node N4 are all the other connection nodes N.
3 and N5, similarly, the performance data from the connection node N3 is transferred to the connection nodes N1 and N5, and the performance data from the connection node N5 is transferred to the connection nodes N1 and N3. In FIG. 2C, the connection node N1 to the node N
The performance data sent to No. 4 are all the other nodes N.
2, N3, N5 to N7, and similarly, each data from the other node nodes N2, N3, N5 to N7 is also transferred to all connection nodes other than the transmission source node.

According to such a transfer method, the own performance data of the node not directly connected to the node is also relayed and propagated to the node existing between the two nodes.
Performance data of all the nodes forming the music session system is sent to each node. For example, considering the node N1 in the example of FIG. 2, nodes N3 to N that are not directly connected to the node N1 in FIG.
The own performance data of No. 7 is the node N1 and each node N3 to N.
7 and N6 existing between the node 7 and the node 7, and transmitted to the node N1. Also in FIG. 2B, the self-playing data of the node N2 is the intermediate node N3.
The own performance data of the nodes N3, N5 to N7, which are transmitted to the node N1 via N4 and are not directly connected, are also sent to the node N1 via the intermediate node. Figure 2
The node N1 in (c) includes nodes N2, N3, N5 to N.
All of the 7 performance data are transmitted via the node N4.

[Transmission of performance data for each musical break]
In one embodiment of the present invention, the performance data is sent not only in two directions, but also in order to realize a musical session. It has a function to process the performance data in synchronization with the musical timing regardless of the delay that occurs, so that the performance data received from the adjacent node or the own performance data will not collide musically. Can be

That is, the performance data relay section DC in the control device 1 of the transmission node controls the performance data control section DP to divide the performance data musically (for example, every one bar), and to divide this musical division. Network I / O for each
/ F4 to be transmitted to the adjacent node. In the adjacent node, the received performance data is buffered by the buffer device 5.
Received by the timing controller TC in the control device 1,
The performance data is synchronized with the musical timings corresponding to the above musical breaks to absorb delays during network propagation, delay variations, differences in playback tempo between nodes, differences in playback start timing between nodes, etc. , The playback device 3 and the I / F 4 to perform playback and transfer processing.

FIG. 3 is a diagram for explaining a transmission / reception mode of performance data between nodes according to an embodiment of the present invention. In FIG. 3, t1, t2, t3, ... Are musical timings (for example, one bar) set corresponding to the musical breaks in order to transmit and process the performance data for each musical break. Each timing) is represented, the interval between each timing is called "one section", and the time is called "time of one section T". Here, in order to simplify the description, it is illustrated that the reproduction tempo and the reproduction start timing between the nodes are the same.

In the example of FIG. 3A, when nodes Ni and Nk are adjacent to a certain node Nj, each node Ni; Nj;
In Nk, the performance data input from the input device 1 includes data for one section Di1, Di2, Di3, ... Dj1, Dj2, Dj for each musical division such as a bar.
3, ...; Dk1, Dk2, Dk3 ,. At that time, the performance data Di1, D of each section
i2, Di3, ...; Dj1, Dj2, Dj3, ...; Dk
1, Dk2, Dk3, ... Are given to each note data with a time code indicating which sound occurs at which time in the section.

Therefore, performance data Di1, Di2, Di3, ...; Dk1, from another adjacent node Ni; Nk
Dk2, Dk3, ... Are certain delay times Tdij, Tdj
Even if it arrives at the node Nj with k, in the node Nj, the buffer device 5 temporarily stores the performance data, and the timing control section TC extracts the performance data at the timings t3, t4, ... Each time the performance data reproduction process is started, the performance data Di
Each performance data is reproduced according to the time code included in 1, Di2, Di3, .... At this time, the node N
own performance data Dj3, Dj4, Dj input at j
.. are also output from the playback device 3 at the same time.

Further, the performance data Di1, Di2, Di3, which have arrived from one of the adjacent nodes Ni; Nk to the node Nj.
...; Dk1, Dk2, Dk3, ... are performance data Dj3, Dj input at the node Nj during this reproduction, respectively.
4, Dj5, ..., and the other adjacent node Nk;
Transferred to Ni. That is, the performance data Di1 + Dj3, Di2 + D after merging the data from the node Ni
j4, Di3 + Dj5, ... Are nodes Nj to N
k, and the merged performance data Dj3 + Dk1, Dj4 + Dk2, Dj5 + Dk3, ...
Is transferred from the node Nj to the node Ni.

FIG. 3B shows an example of processing when the performance data has not arrived within the time of one section. Regarding the delay time Tdmn when transmitting performance data between two nodes Nm and Nn adjacent to each other, for example, as shown in (1) of FIG. 3B, a delay occurs and the delay time Tdmn =
Since "Tdmn1"> T, the performance data Dm1, Dm2, Dm3, ...
If the node Nm is not reached within (t2 to t3),
In the node Nn, the partition (t2 to t3) between them is regarded as "a state where no data has arrived" by the control device 1, and nothing is played back by the playback device 3 in the next partition (t3 to t4). At this time, if the own performance data (not shown) is input, only the own performance data is output from the reproducing device 3.

Due to changes in the delay characteristics of the network, for example, as shown in (1) of FIG.
The dmn changes from "Tdmn1" to "Tdmn1"(<T), and the performance data Dm1 and Dm2 for a plurality of sections continuously reach the node Nn from the same node Nm within the time (t3 to t4) of one section. Also in this case, since the received performance data is accumulated in the buffer device 5, the performance data Dm1 and Dm2 for each section are sequentially reproduced from the next section. When the buffer device 5 does not fit in the buffer device 5, the performance data for the partition that arrives last or first is preferentially deleted.

When the node Nn receives performance data having different reproduction start timing and tempo from the adjacent node Nm, the received performance data is sequentially accumulated in the buffer device 5 of the node Nn, and the control device 1 The reproduction device 3 is caused to start reproduction of performance data for each section at each musical timing t1, t2, t3, .... Even in this case, if the buffer device 5 does not fit,
Delete from the last or first received performance data section.

By processing the performance data according to the musical timing as described above, it is possible to absorb delays and delay variations occurring on the communication network, reproduction start timings for each node, differences in tempo, etc. (Output device) without disturbing the continuous reproduction of 3,
It is possible to prevent the rhythmic and timely breakdown of music.

[Simultaneous Transmission of Performance and Chord Information] In one embodiment of the present invention, chords are assigned to each node.
It is possible to avoid musical harmony by sending a performance information and chord information at the same time by providing a chord) generation function. In the example of FIG. 3A, the node N
On j, for example, the performance data Di1, Dj3, Dk1 are simultaneously reproduced between the timings t3 and t4, but the performance data Di1, Dk1 from the adjacent node and the performance data Dj3 of the own machine are not reproduced. If the tonality and chords are different, there is a possibility of musical breakdown. Therefore, the performance data processing unit D in the control device 1 of each node
A chord progression generation unit C for generating chord progression data in P
P is provided so that each node has a code generation function.

At each node, the performer operates the performance input device 1 in accordance with the chord progression (data) of the chord progression generator CP to perform the performance. In addition, when sending performance information to other nodes, not only the performance data generated by this performance but also the chord information of which chord is composed of which chord is included in the segment of the sent performance data. Also send. As the chord information, for example, chord data representing the chord of the portion is added to each portion of the performance data and transmitted to another node.

On the node, the following (1)-
The chord progression can be determined and the chord progression determined can be generated by any of the methods of (3): (1) The user sets the chord progression in advance and follows it. (2) The user changes the code from the input device 2 in real time. (3) According to the code information sent from a certain specific node (for example, the nodes N3 and N4 in FIG. 2A or the node N4 in FIG. 2C).

Therefore, in each node, when playing with a certain chord progression, all performance data from other nodes that are played back at the same time are adjusted to the chord progression determined on the node. . Since the chord data is sent at the same time as the performance data, the performance data processing section DP refers to the contents of the chord data to determine which chord progression the input performance data is based on. , Change the tonality of the performance data according to the chord progression determined on each node. A well-known automatic accompaniment technique may be applied to the technique of changing the tonality of the performance data.

Due to such a simultaneous transmission function of performance information and chord information, even if performance data of different tonality arrives simultaneously from a plurality of connection nodes, it is converted into a code determined by each node, so that the music sum You can avoid vocal breakdowns.

[Volume Control] In principle, the music session system according to the present invention allows a session with an unlimited number of performer nodes. However, if the participating nodes are
When the number reaches several thousands or tens of thousands, the performance data is piled up, and not only the amount of performance data sent to each node is enlarged, but also music is not established. Therefore, it is necessary to avoid data congestion when connecting with a large number of nodes to which an excessive number of nodes are connected. Therefore, the performance data control unit DP in the control device 1 of each node is provided with a volume control unit VC so that each node has a function of decreasing the value of the volume data in the performance data according to the number of times the performance data is transferred. .

The volume control unit VC of each node reduces the value of the volume data of the performance data received from a certain connection node and transfers it to another connection node, and this volume value is "0" or "0". When a sound having a near value appears, the performance data is deleted from the data to be transferred (not transmitted). For such volume reduction, there is a method of reducing the volume by a fixed amount or a fixed rate. For example, when the method of reducing the volume by a constant volume "20" is adopted, the initial volume value is "10".
Every time the performance data of "0" is sequentially transferred through the nodes, "100" → "80" → "60" → "40" → "2"
The volume value is gradually decreased by "20" such as "0" → "0", and the performance data of the sound whose volume data becomes "0" is deleted.

In this way, when the volume value is gradually reduced each time the performance data is transferred, the performance data has a connection distance (that is, the number of nodes interposed between the data generation source node and the data reception node). Since the nodes reach only nodes within a certain fixed limit, each node can suppress the accumulation of performance data to a certain upper limit. Also, when playing at each node, if you play at a high volume, the performance data will reach far nodes, and if you play at a low volume, it will only reach nearby nodes.
It can be used as a performance expression.

[0051]

As described above, according to the music session system of the present invention, the performer of each user terminal is
The performance data is bidirectionally exchanged with the performer of the adjacent user terminal, and the performer of the user terminal connected remotely is propagated through the user terminal between the own user terminal and the performer. , High scalability and high real-time property with nearby nodes can be obtained.

That is, regarding scalability,
The own user terminal communicates performance data only with a limited number of adjacent user terminals among the users configuring the system,
By theoretically relaying performance data of other user terminals, infinite user terminals can theoretically participate in the session. Therefore, the scalability is obviously higher than the physically existing constraint in the real-time session.

Regarding the real-time property, since the respective user terminals transmit the performance data bidirectionally, the real-time property is obviously higher than the method of rotating the performance data in one direction. . Also,
The communication itself can be performed only by communicating with a limited number of adjacent user terminals, and by relaying this adjacent user terminal and conducting a session with all the user terminals that make up the system, the bandwidth required for the real-time session can be increased. It is possible to realize high real-time property within a clearly lower constraint.

In the music session system according to the present invention, the network delay and the delay due to relaying a plurality of nodes are transmitted by using musical breaks and absorbed.
It is also possible to obtain the technical effect of avoiding a musical breakdown.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of each user terminal (node) in a music session system using a communication network according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of system organization when a music session system is configured by “7” nodes.

FIG. 3 is a diagram for explaining transmission of performance data for each musical segment according to an embodiment of the present invention.

[Explanation of symbols]

NA, NB, NC, ND, ...; N1 to N7; Ni, N
j, Nk; Nm, Nn nodes [user terminal, client (terminal)], PL performer (user), DP performance data processing unit, 2 input device including performance input device and panel setting input device, 3 reproduction device and display Output device including device, 4; 41, 42, 43, ... Network input / output interface (I / F), 5; 51, 52, 53, ... Buffer device, Tdij, Tdjk; Tdmn (Tdmn1, Tdmn
2) Transmission delay time.

Claims (6)

[Claims] 1. A music session system in which a plurality of user terminals are communicatively connected via a communication network, each user terminal including performance input means, communication means, reproduction means and control means, The input means inputs the own machine performance data based on the performance at the user terminal, and the communication means bidirectionally transmits and receives performance data to and from an adjacent user terminal connected to the user terminal, The reproducing means reproduces the inputted own performance data and the received performance data, and the control means is connected to a plurality of adjacent user terminals so as to transmit the inputted own performance data to the adjacent user terminals. Further, the user terminal being controlled further controls the communication means so as to transmit the received performance data from a certain adjacent user terminal to another user terminal. Music session system using communication network. 2. The control means controls the input performance data of the player to be transmitted from the communication means for each musical break, and the received performance data corresponds to the musical break. The music session system using the communication network according to claim 1, wherein the processing is performed in synchronization with musical timing. 3. The control means adds chord information to the inputted own performance data, and causes the communication means to transmit the own performance data to which the chord information is added to an adjacent user terminal. A music session system using the communication network according to claim 1. 4. The control means corrects the received performance data so as to match the code of the input performance data of the player's machine, according to any one of claims 1 to 3. Music session system using communication network. 5. The control means reduces the volume data value in the received performance data, and causes the communication means to transmit the performance data with the reduced volume data value to an adjacent user terminal. A music session system using the communication network according to claim 1. 6. A user terminal device used in a music session system in which a plurality of user terminals are communicably connected via a communication network, for inputting own performance data based on a performance at the user terminal. Communication means for bidirectionally transmitting and receiving performance data between the performance input means and the adjacent user terminal connected to the user terminal, and playback for reproducing the input own performance data and the received performance data. And a user terminal to which a plurality of adjacent user terminals are connected so as to transmit the input own-device performance data to the adjacent user terminal, the received performance data from a certain adjacent user terminal is further transmitted to another user terminal. A user terminal device, comprising: control means for controlling the communication means so as to transmit to the terminal.