Provided is a voice communication system that notifies a terminal device of transmission restriction information when the number of received voice signals reaches a predetermined number. A server device continuously counts the number of simultaneously received voice signals. A first terminal device transmits, to the server device, a voice signal with identification information of a second terminal device. The server device transfers, to the second terminal device, the voice signal transmitted from the first terminal device. However, when the number of simultaneous receptions of the voice signals reaches a predetermined restriction value, the server device transfers, to the second terminal device, the received voice signal with transmission restriction information attached thereto. The second terminal device does not transmit a voice signal, even if a user performs a transmission operation, during reception of the voice signal with the attached transmission restriction information.

A conference system, capable of reliably managing a connection state of a discussion unit and a control unit and continuously acquiring information from the discussion unit when a connection abnormality occurs, is provided. A conference system S includes a control unit 1 and a discussion unit 2, a running packet is repeatedly transmitted and received between both units, the running packet includes a counter flag, the control unit includes a CU communication portion 11, a CU storage portion 13, and a CU control portion 16, the discussion unit includes a DU control portion 26, the DU control portion increments the count value of the counter flag, and each time the running packet is received from the discussion unit, the CU control portion compares a count value stored in the CU storage portion and the count value of the counter flag included in the running packet received from the discussion unit.

A technique is provided that can reduce degradation of the sound quality due to a tandem connection of paired coding and decoding, and can reduce the operation processing amount and the required memory amount of a multipoint control unit. In multipoint connection between terminals of a plurality of communication networks (for example, a fixed phone line and a mobile phone line) having different communication capacities, when a multichannel coding including a monaural coding scheme of a communication network having a smaller communication capacity is used in a communication network having a larger communication capacity to transmit sounds of a plurality points to the communication network terminal having the larger communication capacity, control is exercised such that monaural codes of the plurality points are output.

A technique is provided that can reduce degradation of the sound quality due to a tandem connection of paired coding and decoding, and can reduce the operation processing amount and the required memory amount of a multipoint control unit. At a terminal of a communication network having a larger communication capacity in multipoint connection between terminals in a plurality of communication networks (e.g., a fixed phone line and a mobile phone line) having different communication capacities, a multichannel coding including a monaural coding scheme of the communication network having the smaller communication capacity is performed on the coding side, whereas decoding of a multichannel-coded code of one point, decoding of a monaural-coded code of one point, or decoding of a monaural-coded code of a plurality of points is performed on the decoding side in accordance with the input code.

A technique is provided that can reduce degradation of the sound quality due to a tandem connection of paired coding and decoding, and can reduce the operation processing amount and the required memory amount of a multipoint control unit. In multipoint connection between terminals of a plurality of communication networks (for example, a fixed phone line and a mobile phone line) having different communication capacities, when a multichannel coding including a monaural coding scheme of a communication network having a smaller communication capacity is used in a communication network having a larger communication capacity to transmit sounds of a plurality points to the communication network terminal having the larger communication capacity, control is exercised such that monaural codes of the plurality points are output.

A wireless communication method and protocol for wireless RF transmission of audio data from a plurality of wireless RF devices (portable parts PP) to a wireless RF receiver device (fixed part FP) using a full slot DECT protocol. The FP broadcasts in each frame, a multiplex of control information to the plurality of PPs. The PPs receive the multiplex of control information, and extract control information intended for each individual PP from the multiplex of control information. Preferably, the PPs are synchronized to transmit audio data in respective time slots covering both time slots in first and second half of the frame. This allows a high number of PPs to be connected to one FP still at a high audio quality with low latency, since both the normal uplink and downlink parts of the DECT frame are used for audio data transmission. This allows the method to be used for a conference call system of a high number of wireless microphone devices, or a live performance wireless microphone and/or musical instrument sound system or the like.

Systems, methods, and computer program products are provided for initiating and extending audio conversations among mobile device users on a mobile application. For example, a method comprises: determining a first user accesses a mobile application on a first mobile device of the first user; determining a second user accesses the mobile application on a second mobile device of the second user; initiating an audio conversation between the first user and the second user; transmitting audio conversation information to at least one of the first user or the second user; and broadcasting the audio conversation to a third user who accesses the mobile application on a third mobile device of the third user.

The invention integrates emerging applications, tools and techniques for machine learning in medicine with videoconference networking technology in novel business methods that support rapid adaptive learning for medical minds and machines. These methods can leverage domain knowledge and clinical expertise with networked cognitive collaboration, augmented clinical intelligence and cybernetic workflow streams for learning health care systems. The invention enables multimodal clinical communications, collaboration, consultation and instruction between and among heterogeneous networked teams of persons, machines, devices, neural networks, robots and algorithms. It provides for both synchronous and asynchronous cognitive collaboration with multichannel, multiplexed imagery data streams during various stages of medical disease and injury management—detection, diagnosis, prognosis, treatment, measurement, monitoring and reporting, as well as workflow optimization with operational analytics for outcomes, performance, results, resource utilization, resource consumption and costs. The invention enables cognitively-enriched, annotation and tagging, as well as encapsulation, saving and sharing of collaborated imagery data streams as packetized clinical intelligence.

An example operation may include one or more of receiving a plurality of local audio files from a plurality of audio devices that participated in a teleconference, where each local audio file includes a locally captured audio recording of a user of a respective audio device during the teleconference, generating combined audio playback information for the teleconference based on the plurality of local audio files received from the plurality of audio devices, the generating including detecting audio portions within the plurality of local audio files and synchronizing a playing order of the detected audio portions based on timing information included in the plurality of local audio files, and transmitting the combined audio playback information of the teleconference to at least one audio device among the plurality of audio devices.

Electronic conferences often comprise a mixture of on-site and remote participants. A moderator may selectively engage remote participants for full-duplex interactions, such in response to the remote participant “raising their hand” to signal a question or desire to speak. Systems and methods are provided to enable a moderator to utilize natural speech to be utilized as voice commands, and with no other input, to cause a remote participant to be unmuted, enabling full-duplex for the associated remote terminal, and when the question is done, re-muted and thereby returned to half-duplex.