JP2008079030A - Voice information output device and voice information communicating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To check the reception state, network condition or the like of a voice information output device. <P>SOLUTION: The voice information output device outputs voice information which is provided by a voice information providing device through a network. It is provided with a voice signal receiving means which receives a plurality of voice signals from the voice information providing device, a reception processing means which performs reception processing of the voice signals according to header information of the voice signals received by the voice information receiving means and extracts voice data included in the voice signals, a voice data temporary storage means which receives voice data of the voice signals whose reception is judged as normal by the reception processing means from the reception processing means and temporarily stores them, a reception state monitoring means which monitors the reception state of the voice signals on the basis of the number of the voice signals subjected to the reception processing by the reception processing means and the header information of the voice signals, and an output means which performs decoding processing of the voice data in the voice data temporary storage means and outputs reproduced voice information. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an audio information output device and an audio information communication system. For example, an audio information broadcast server (audio information providing device) transmits a plurality of audio signals based on audio information through a network, and converts the audio signals received through the network to The present invention can be applied to an audio information output device that reproduces and outputs audio information based on the information and a system thereof.

  2. Description of the Related Art Conventionally, for example, a system employing RTP (Real Time Transport Protocol), where a transmission server transmits an audio signal, and an audio information notification device that receives the audio signal through a network reproduces the audio based on the received signal and generates audio. There is an audio broadcasting system that outputs. This type of audio broadcasting system is used, for example, when a local government or the like manages a broadcast server and broadcasts audio information to residents who have an audio information notification device.

  Conventionally, in such an audio broadcasting system, when confirming the reception status of an audio signal transmitted by a broadcast server, the communication status in a network, and the like, a dedicated monitor device (such as a PC) is generally installed on the network. It is done.

  Non-Patent Document 1 discloses a network analyzer technique for analyzing an application flow flowing on a network in real time, and Non-Patent Document 2 discloses jitter and delay based on RTP packets and RTCP (Real Time Control Protocol) packets. VoIP protocol analyzer technology for analyzing the above is disclosed.

  Non-patent documents 1 and 2 are used by being mounted on a PC (personal computer) installed on a network, and it is necessary to install a PC having these functions on the network.

"ClearSight Analyzer" product introduction homepage, Toyo Technica Corporation, Internet search on September 6, 2006, <URL: http://www.toyo.co.jp/clearsight/pro_cs_anaraiza.html> “Artiza VoIP Analyzer Overview”, Product Information Homepage, Artisa Networks, Inc., September 6, 2006 Internet Search, <URL: http: // www. artiza.co.jp/product/voip/an.html>

  By the way, in order to monitor the communication status of the network, the monitoring PC is installed on the network because it is required to monitor the network status in real time. However, in the above-described audio information broadcasting system or the like, every time audio information is broadcast, it is only necessary to check whether or not the audio signal is correctly received, and the received signal for each audio communication can be stored. In addition, since the reception status can be confirmed afterwards, real-time performance is not strongly required. Further, an error may occur due to the monitor PC to be installed. Furthermore, the cost required for installing the monitor PC also increases.

  Moreover, although the prior art described in Non-Patent Document 2 saves a received signal every time an RTCP packet is received, some audio information broadcasting systems do not use RTCP and do not use RTCP. In addition, it is strongly desired to confirm the reception status of received signals and the network status.

  Therefore, a voice information output device and a voice information communication capable of monitoring a reception state of a voice signal and a network status without providing a dedicated device for monitoring on the network and without affecting a protocol related to voice communication. A system is needed.

  In order to solve this problem, the audio information output device of the first aspect of the present invention receives a plurality of audio signals based on audio information provided by the audio information providing device via a network, and based on the received plurality of audio signals. In the audio information output device for outputting the reproduced audio information, (1) audio signal receiving means for receiving a plurality of audio signals from the audio information providing apparatus through the network, and (2) each of the audio information receiving means received by the audio information receiving means Based on the header information of the audio signal, the reception processing for each audio signal is performed, and the reception processing means for extracting the audio data contained in each audio signal; and (3) the reception processing means determines that the reception is normal. Audio data of each audio signal is received from the reception processing means and temporarily stored; (4) received by the reception processing means; Receiving state monitoring means for monitoring the reception state of each sound signal based on the number of signals of each sound signal and the header information of each sound signal; and (5) each sound data received from the sound data temporary storage means. On the other hand, there is provided audio information output means for performing predetermined decoding processing, reproducing audio information, and outputting the reproduced audio information.

  The voice information communication system according to the second aspect of the present invention includes (1) a voice information providing apparatus that transmits a plurality of voice signals based on the voice information to be provided, and (2) voice information provided by the voice information providing apparatus through the network. In a voice information communication system comprising: one or more voice information output devices that receive a plurality of voice signals based on the received voice signals and output voice information reproduced based on the received voice signals; It corresponds to the audio information output apparatus of 1 of the present invention.

  According to the audio information output device and the audio information communication system of the present invention, the reception state of the audio signal and the network status can be obtained without providing a dedicated monitor device on the network and without affecting the protocol related to the audio communication. Can be monitored.

(A) First Embodiment Hereinafter, a first embodiment of a voice information output device and a voice information communication system according to the present invention will be described with reference to the drawings.

  The first embodiment uses the audio information output device and the audio information communication system of the present invention, and the audio information broadcast server (audio information providing device) sends the audio signal of the audio information to be provided through the network. Alternatively, an embodiment for realizing an audio information broadcasting system that broadcasts to a plurality of audio information notification devices (audio information output devices) will be described.

(A-1) Configuration of the First Embodiment FIG. 1 is a configuration diagram showing an overall configuration image of the audio information broadcasting system of this embodiment. As shown in FIG. 1, the audio information broadcasting system 1 according to the embodiment includes at least an audio information notification apparatus 2, an information processing apparatus 3, an audio information broadcast server 4, and a network 5. In FIG. 1, the installation of the voice information notification device 2 and the information processing device 3 is not particularly limited, and a plurality of them may be provided.

  The network 5 is a communication network for communicating an audio signal (audio packet) transmitted by the audio information broadcast server 4, and corresponds to, for example, an IP network whose communication protocol is IP (Internet Protocol). The network 5 may be a communication network configured by a wired line, or may be a communication network configured partially or entirely by a wireless line. The network 5 may be a dedicated network or a public network.

  When the audio information broadcast server 4 takes in audio information having a predetermined content, the audio information broadcast server 4 converts the audio information into an audio signal according to a predetermined communication method, and transmits the audio signal to the audio information notification device 2 through the network 5. Here, the communication method applied by the audio information broadcast server 4 is not particularly limited, but in this embodiment, for example, RTP (Real Time Transport Protocol) is adopted. The audio information broadcast server 4 stores a multicast address to be transmitted to a plurality of audio information notification devices 2, and transmits an audio signal by multicast using this multicast address.

  The audio information notification device 2 receives an audio signal from the audio information broadcast server 4 through the network 5 and reproduces the received audio signal, thereby notifying the audio of the content to be broadcast by the audio information broadcast server 4 ( Output).

  The voice information notification device 2 includes a reception status monitoring function for monitoring the reception status of a received voice signal, a statistical processing function for performing statistical processing based on the monitoring result of the reception status monitoring function, and a device, as will be described later. It performs an in-device data monitoring function for monitoring data corruption in the device.

  Note that the voice information notification device 2 of this embodiment can also be connected to the telephone 6 through a telephone line, and can transfer the received voice signal to the telephone 6 side.

  The information processing apparatus 3 is an information processing apparatus connected to the voice information notification apparatus 2 and corresponds to, for example, a personal computer. The information processing device 3 acquires the reception information of the audio signal held by the audio information notification device 2 and statistical information based on the reception information, and monitors the reception result, the network status, and the like based on the reception information and statistical information. Output.

  For example, the statistical information stored by the voice information notification device 2 is given a URL, and the information processing device 3 can display the statistical information stored by the voice information notification device 2 as a WEB page.

  FIG. 2 is a block diagram showing an internal configuration of the voice information notification apparatus 2. In FIG. 2, the voice information notification device 2 is roughly divided into a network switch unit 21, a gateway (GW) unit 22, a voice communication control unit 23, storage units 24 and 25, connection units 26 to 28, and a speaker unit 29. , At least.

  The gateway unit 22 includes a network processor unit 221, storage units 222 and 223, a DAA 224, and an SLIC 225.

  Furthermore, the voice communication control unit 23 includes a TCP / IP control unit 231, an RTP control unit 232, a reproduction buffer unit 233, and a statistical information storage unit 234.

  The connection unit 26 is a connection unit with the connection line of the network 5, the connection unit 27 is a connection unit with the telephone 5 or the telephone line, and the interface unit 28 is a connection for connecting to the information processing apparatus 3. It is a connection part between the lines.

  The network switch unit 21 is connected to the connection line on the network 5 and the information processing apparatus 3 side through the connection unit 26 and the connection unit 27, and the audio signal (from the audio information broadcast server 4 through the connection unit 26 ( When the voice packet is received, the received voice signal is given to the network processor unit 221 of the gateway unit 22.

  In the voice information notification device 2 of this embodiment, the gateway unit 22 has a router function, and the received voice signal is given to the network processor unit 221 of the gateway unit 22 by the network switch unit 21. When the network processor unit 221 determines that it is addressed to the audio information notification device 2 (that is, for audio output by the speaker unit 29), the network processor unit 221 transfers the audio signal to the network switch unit 21.

  Further, upon receiving the transferred audio signal from the network processor unit 221 of the gateway unit 22, the network switch unit 21 gives the audio signal to the audio communication control unit 23.

  When the gateway unit 22 receives the audio signal from the network switch unit 21, based on the header information of the audio signal, the gateway unit 22 determines whether the audio signal is an audio signal addressed to the telephone 6 or the telephone line 7, or the audio information notification device 2. It is determined whether the audio signal is addressed, and the audio signal is transferred to the transfer destination.

  The network processor unit 221 controls the function of the gateway unit 22, and performs router processing based on the header information of the received audio signal as described above. The storage unit 222 is a read-only memory represented by a flash memory, for example, and the storage unit 223 is a data memory represented by an SDRAM, for example.

  The DAA 224 is an interface circuit connected to the public telephone line 7, and the SLIC 225 is a telephone line interface circuit connected to the telephone 6. Existing technologies can be applied to the DAA 224 and the SLIC 225, and detailed descriptions of the functions of the DAA 224 and the SLIC 225 are omitted.

  When the audio communication control unit 23 receives the audio signal from the audio information broadcast server 4 via the network switch unit 21, the audio communication control unit 23 performs a predetermined decoding process on the received audio signal, and converts the audio data based on the decoded signal. It is something to regenerate. The voice communication control unit 23 gives the reproduced voice data to the speaker unit 29. Furthermore, the voice communication control unit 23 counts the number of received voice signals for each voice communication, monitors the reception status of received packets for each voice communication, and provides statistical information based on the monitoring result for each voice communication. To save.

  The storage unit 24 is a read-only memory represented by a flash memory, for example, and the storage unit 25 is a data memory represented by an SDRAM, for example. The storage unit 24 and the storage unit 25 hold processing programs executed by the voice communication control unit 23, data necessary for processing, and the like.

  Hereinafter, a detailed configuration of the voice communication control unit 23 will be described.

  When the TCP / IP control unit 231 receives the audio signal (audio packet) from the audio information broadcast server 4 via the network switch unit 21, the TCP / IP control unit 231 extracts the RTP packet from the audio packet and gives it to the RTP control unit 232. It is.

  When the RTP control unit 232 receives the RTP packet from the TCP / IP control unit 231, the RTP control unit 232 extracts RTP data (voice data) from the received RTP packet and gives the extracted RTP data (voice data) to the reproduction buffer unit 233. It is.

  When the RTP control unit 232 receives an RTP packet from the TCP / IP control unit 231, the RTP control unit 232 counts the number of received RTP packets. The RTP control unit 232 counts the number of RTP data to be written to the reproduction buffer unit 233 when the extracted RTP data is written to the reproduction buffer unit 233.

  Further, the RTP control unit 232 extracts a sequence number from the header information of the received RTP packet, analyzes the sequence number to determine whether there is a lost packet, and counts the number of lost packets if there is a loss. is there.

  Furthermore, the RTP control unit 232 extracts a time stamp from the header information of the received RTP packet, holds the extracted time stamp, and compares the time stamp of the RTP packet received last time with the time stamp of the RTP packet received this time. Jitter values (packet arrival interval jitter values) are obtained by comparing the reception time differences.

  As described above, when the RTP control unit 232 determines the number of received packets, the number of writes to the reproduction buffer unit 233, the number of lost packets, and the jitter value, the RTP control unit 232 determines the number of received packets, the number of lost packets, and The jitter value is given to the statistical information storage unit 234 as RTP information.

  The statistical information storage unit 234 receives RTP information from the RTP control unit 232 and stores the RTP information for each voice communication. The statistical information storage unit 234 can transmit the stored RTP information to the information processing device 3 in response to a request from the information processing device 3.

  The reproduction buffer unit 233 temporarily stores RTP data (audio data) from the RTP control unit 232 and periodically supplies the stored RTP data (audio data) to the speaker unit 29.

  The speaker unit 29 periodically receives RTP data (audio data) from the reproduction buffer unit 233, performs demodulation processing on the RTP data, reproduces audio, and outputs the reproduced audio.

(A-2) Operation of the First Embodiment Next, the operation of the voice information notification device 2 of this embodiment will be described with reference to the drawings.

  First, in FIG. 1, when the audio information broadcast server 4 captures the audio to be broadcast, the audio information broadcast server 4 converts the audio into data according to a predetermined modulation method, packetizes it according to a predetermined communication method, and generates an audio signal (audio packet). The voice signal (voice packet) is broadcast toward the network 5 (S1).

  The audio signal (audio packet) broadcast by the audio information broadcast server 4 is given to the audio information notification device 2 as the transmission destination via the network 5 (S2).

  When the audio signal from the audio information broadcast server 4 is given to the audio information notification device 2 through the network 5, the received audio signal is received by the connection unit 26 of the audio information notification device 2 as shown in FIG. This is given to the network switch unit 21 (S3).

  The gateway unit 22 of the voice information notification device 2 has a router function, and the received signal is transferred by the gateway unit 22. Therefore, when the received voice signal is given to the network switch unit 21, the received voice signal is given to the network processor unit 221 of the gateway unit 22 by the network switch unit 21 (S4).

  When the received audio signal is given to the network processor unit 221, the network processor unit 221 performs a transfer process based on the header information of the audio signal, and the network processor unit 221 determines that it is addressed to the audio information notification device 2. Then, the received voice signal is subjected to address conversion addressed to the voice communication control unit 23, and is provided to the network switch unit 21 again (S4).

  When the audio signal subjected to the transfer process by the network processor 221 is given to the network switch unit 21, the audio signal is given to the audio communication control unit 23 by the network switch unit 21 (S5).

  When the voice signal is given to the voice communication control unit 23, the RTP packet is extracted from the voice signal (voice packet) by the TCP / IP control unit 231, and the extracted RTP packet is given to the RTP control unit 232 (S5). ).

  When the RTP packet is given to the RTP control unit 232, the RTP control unit 232 performs the following processing. FIG. 3 is a flowchart showing the operation in the RTP control unit 232.

  In FIG. 3, when an RTP packet is given to the RTP control unit 232, first, the RTP control unit 232 counts the number of received RTP packets, and the RTP packet received in the audio broadcast (that is, the RTP session) is counted. The total number of received packets is stored (S101).

  Next, each RTP packet received is subjected to a predetermined RTP reception process by the RTP control unit 232 (S102). The RTP reception process here is the same process as the conventional RTP reception process, but a detailed description thereof is omitted. For example, based on the header information of each received RTP packet, the payload type identification process and the sequence number Identification processing, RTP data reproduction schedule processing based on a time stamp, session identification processing based on a synchronization source (SSRC), determination processing such as the number of frames and frame size, and the like.

  At this time, the RTP control unit 232 compares the sequence number of the current received RTP packet with the sequence number of the previous received RTP packet, and the difference between the sequence number of the current received RTP packet and the sequence number of the previous received RTP packet. Is obtained (S103).

  That is, the RTP control unit 232 determines whether or not the RTP packets from the audio information broadcast server 4 can be received in order according to the sequence number.

  In S103, when the difference between the sequence number of the current received RTP packet and the sequence number of the previous received RTP packet is “1” (that is, when the RTP packet is received according to the sequence number), the current reception The sequence number of the RTP packet is stored (S105), and the processing after S106 is performed by the RTP control unit 232.

  On the other hand, if the difference between the sequence number of the current received RTP packet and the sequence number of the previous received RTP packet is “2 or more” in S103 (that is, exists between the previous RTP packet and the current RTP packet). When a possible RTP packet is lost), the RTP control unit 232 counts the number of lost packets based on the difference in sequence number and stores it as the number of lost packets for each audio broadcast (for each RTP session) (S104). Further, the RTP control unit 232 stores the sequence number of the current RTP packet (S105), and the processes after S106 are performed. The number of lost packets is updated by adding (sequence number difference-1) to obtain the number of lost packets.

  In S106, the RTP control unit 232 compares the reception time of the previous RTP packet with the reception time of the current RTP packet, and obtains the reception time difference between the previous RTP packet and the current RTP packet, The fluctuation of packet arrival is calculated (S106).

  In addition, the RTP control unit 232 stores the reception time of the current RTP packet and uses it when obtaining fluctuations in subsequent packet arrival (S107).

  As described above, RTP reception processing by the RTP control unit 232 is performed on each received RTP packet, and when it is determined that the RTP packet is normal, normal RTP data (audio data) is reproduced by the reproduction buffer unit. In addition to being written to 233 (S108), the RTP control unit 232 counts and stores the number of writes to the reproduction buffer unit 233 (S109).

  Here, some packets given to the RTP control unit 232 are received by the RTP control unit 232, but may not be properly determined as RTP packets due to some influence. This is because, for example, the header format may be abnormal or the packet size may be different due to the influence of data communication. Such a packet is received by the RTP control unit 232, but is discarded inside the RTP control unit 232.

  Returning to FIG. 2, when the audio data subjected to the RTP reception processing by the RTP control unit 232 is written in the reproduction buffer unit 233 in the order of time stamps, the audio data is temporarily stored in the reproduction buffer unit 233, and the reproduction timing is set. The voice data stored during the reproduction time is applied to the speaker unit 29 (S6).

  The speaker unit 29 performs a predetermined decoding process on the audio data from the reproduction buffer unit 233, reproduces the audio, and outputs the reproduced audio (S7).

  Further, as described above, the RTP control unit 232 monitors the reception status of the received RTP packet, and stores the reception status monitoring result of the RTP packet in the statistical information storage unit 234 as RTP information or statistical information.

  That is, the RTP control unit 232 obtains the number of received RTP packets, the number of lost packets, the reception time difference (jitter value) between the current packet reception time and the previous packet reception time, and the reproduction buffer obtained as described above. The number of writes to the unit 233 is stored in the statistical information storage unit 234 as RTP information for each RTP session.

  Note that the RTP control unit 232 may obtain the fluctuation of packet arrival based on a standard deviation using a plurality of jitter values between received packets that arrive continuously.

  Further, the RTP control unit 232 obtains a packet loss rate based on the number of received RTP packets and the number of lost packets, and stores the packet loss rate in the statistical information storage unit 234 as statistical information.

  Further, the RTP control unit 232 compares the number of received RTP packets with the number of writes to the reproduction buffer unit 233, and obtains the number of discarded packets in the RTP control unit 232 based on the difference between the number of received packets and the number of writes. Further, the packet discard rate in the RTP control unit 232 is obtained based on the packet discard number and the received packet number, and the packet discard number and the packet discard rate are stored in the statistical information storage unit 234 as statistical information.

(A-3) Effects of the First Embodiment As described above, according to the first embodiment, the RTP control unit in the voice information notification device performs the number of received packets, the number of lost packets, and the current packet of the RTP packet. With a simple configuration of counting and storing the difference between the reception time and the reception time (jitter value) of the previous packet reception time and the number of writes to the reproduction buffer unit 233, the reception state of the audio signal and the network status can be grasped it can.

  Further, according to the first embodiment, unlike the conventional case, there is no need to provide a dedicated monitor PC on the network, so there is no error due to the dedicated monitor PC, and the cost for installing the dedicated monitor PC. Can be suppressed.

  Furthermore, according to the first embodiment, for example, even a device that does not use RTCP can grasp the reception state and network state of a voice signal.

  In addition, according to the first embodiment, since it is possible to grasp the reception state and network state of the audio signal for each voice communication, it is possible to grasp the reception state and network state in units of voice communication or comprehensively. .

(B) Other Embodiments In the above embodiment, an audio information broadcasting system that broadcasts (sends) audio (audio signals) provided by the audio information broadcasting server to the audio information notification device 2 through the network will be described as an example. However, the present invention is not limited to an audio broadcasting system, and can be widely applied to audio information receiving apparatuses that can receive an audio signal transmitted through a network.

  In the above embodiment, the communication between the audio information broadcast server and the plurality of audio information notification devices has been described (that is, one-to-multiple communication). However, the present embodiment can also be applied to one-to-one communication. .

  The configuration of the voice information notification device is not limited to the configuration described in FIG. For example, the voice information notification device includes display means for displaying RTP information and statistical information (for example, a display unit or the like), display instruction operation means for instructing display of RTP information and statistical information (for example, predetermined operation buttons) Etc.) may be provided.

  The voice information notification device of the above embodiment basically calculates the RTP information and the statistical information in all voice communications, but at least operates to instruct whether or not to perform statistical processing. A / OFF function may be provided. This ON / OFF function includes, for example, an operation button so that it can be operated by manual switching. For example, a predetermined threshold is set for RTP information, and the RTP information in the previous voice communication (RTP session) It is made to function when the voice communication control unit determines that the reception state is not good from the comparison result with the threshold value.

  In the above embodiment, the RTP control unit has been described as monitoring the reception state and network status for each voice communication and storing the monitoring result. Here, a threshold is set in advance for the RTP information and / or statistical information stored by the RTP control unit, and when the voice communication control unit determines that the reception state of the voice signal is not good, retransmission of the voice signal is performed. You may make it provide the resending request means to request. Further, the voice communication control unit may be provided with an alarm sending means for sending an alarm to a predetermined destination when the reception state is bad.

  In the above-described embodiment, the case where RTP is adopted as the transfer protocol of the audio signal has been described. However, the transfer protocol is not particularly limited, and can be widely applied to a system for network communication of real-time information.

1 is an overall configuration diagram of an audio information broadcasting system according to a first embodiment. It is a block diagram which shows the internal structure of the audio | voice information notification apparatus of 1st Embodiment. It is a flowchart which shows operation | movement of the RTP control part of 1st Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Audio information broadcasting system, 2 ... Audio information notification device, 4 ... Audio information broadcast server, 23 ... Audio communication control unit, 231 ... TCP / IP control unit, 232 ... RTP control unit, 233 ... Reproduction buffer unit, 234 ... Statistical information storage unit, 29. Speaker unit.

Claims (6)

In the audio information output device that receives a plurality of audio signals based on the audio information provided by the audio information providing device through the network and outputs the audio information reproduced based on the received audio signals,
Audio signal receiving means for receiving the plurality of audio signals from the audio information providing apparatus through the network;
Reception processing means for performing reception processing on each audio signal based on the header information of each audio signal received by the audio information receiving means, and extracting audio data included in each audio signal;
Audio data temporary storage means for receiving the audio data of each of the audio signals determined to be normal reception by the reception processing means from the reception processing means and temporarily storing the audio data;
Reception status monitoring means for monitoring the reception status of each of the audio signals based on the number of signals of each of the audio signals and the header information of each of the audio signals that are received and processed by the reception processing means;
Audio information comprising: audio information output means for performing a predetermined decoding process on each of the audio data received from the audio data temporary storage means, reproducing the audio information, and outputting the reproduced audio information Output device.   The audio information output apparatus according to claim 1, further comprising monitoring result storage means for storing the monitoring result monitored by the reception state monitoring means for each audio information provided by the audio information providing apparatus.   The reception state monitoring means monitors the number of lost signals of each audio signal by confirming the continuity of sequence numbers included in the header information of each audio signal. 2. The audio information output device according to 2.   4. The reception state monitoring means monitors the reception time interval of the continuously received audio signal based on time information included in header information of each audio signal. The audio information output device according to any one of the above.   The reception state monitoring means monitors the number of unsuccessful reception processes of the audio signal in the reception processing means based on the number of signals of the audio signal for which the reception process by the reception processing means is normal. The voice information output device according to any one of claims 1 to 4. A voice information providing device that transmits a plurality of voice signals based on the voice information to be provided;
One or more audio information output devices for receiving a plurality of audio signals based on the audio information provided by the audio information providing device through a network and outputting the audio information reproduced based on the received audio signals; In a voice information communication system comprising:
6. A voice information communication system, wherein each of the voice information output devices corresponds to the voice information output device according to any one of claims 1 to 5.

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