EP4360298A1 - Gestion d'une audioconference audio et/ou video - Google Patents
Gestion d'une audioconference audio et/ou videoInfo
- Publication number
- EP4360298A1 EP4360298A1 EP22737648.0A EP22737648A EP4360298A1 EP 4360298 A1 EP4360298 A1 EP 4360298A1 EP 22737648 A EP22737648 A EP 22737648A EP 4360298 A1 EP4360298 A1 EP 4360298A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- client terminal
- audio
- acoustic
- audio data
- data stream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/2236—Quality of speech transmission monitoring
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/018—Audio watermarking, i.e. embedding inaudible data in the audio signal
Definitions
- the invention relates to the field of audioconferencing and videoconferencing, and relates more particularly to the ability of a user to be heard or not by another user during an audioconference or videoconference.
- Videoconferencing or audioconferencing systems have experienced significant growth in recent years and this trend has further amplified in the current health context.
- An audio conference (or audio conference) allows participants to communicate by audio instantly while a video conference (or video conference) allows not only to communicate by audio but also by image instantly.
- video streams are exchanged between the participants' terminals so that everyone can see and hear their interlocutors.
- audio streams are exchanged without there being any image stream.
- the present invention relates to a first method implemented by a first client terminal during a communication session in cooperation with an audio and/or video conference server managing exchanges of audio data streams between the first terminal client and at least one second client terminal during an audio and/or video conference.
- the first method comprises: - Sending to the audio and/or video conference server, an audio data stream marked by integration of a code assigned to said first terminal in a first audio data stream;
- said at least one management action comprising: o restitution, by a user interface of the first client terminal, of information depending on the audio capacity data received, indicating whether said at least one second client terminal is capable of receiving an audio data stream from the first client terminal.
- the first method comprises receiving, from a mediation server (SV2), the code assigned to the first client terminal.
- SV2 mediation server
- said code assigned to said first client terminal is received in response to a request to said mediation server comprising an identifier of the first client terminal.
- the first audio data stream is generated from acoustic signals acquired by a first microphone coupled to the first client terminal.
- the acoustic signals from which the first audio data stream is generated represent a background noise acquired by the first microphone, the intensity of the background noise being lower than a first intensity value.
- the first method comprises the first audio data stream is generated by emulating random noise.
- the first method comprises, before sending the marked audio data stream to the audio and/or video conference server: activation of the first microphone of the first client terminal; deactivation of an echo cancellation function so as to allow acoustic acquisition by the first microphone of the first client terminal of an acoustic emission from a first loudspeaker coupled to said at least one first client terminal; generation of a test acoustic signal by means of the first loudspeaker; acoustic acquisition, by means of the first microphone, of the acoustic test signal emitted by the first loudspeaker; and determination, from a result of said acoustic acquisition, of acoustic capacity data characterizing the acoustic capacities of the first microphone; wherein the information returned by the user interface is further representative of the acoustic capabilities of the first microphone of the first client terminal.
- the first method comprises: a) obtaining a watermarked audio data stream by embedding a digital marking code into a first watermarked audio data stream; b) sending the tagged audio data stream to the audio and/or video conferencing server; c) receiving, from a mediation server, audio capability data representative of whether said at least one second client terminal has detected the digital marking code in an audio data stream received from the audio conferencing server and/or video ; and d) triggering at least one action for managing the audio and/or video conference from the audio capability data received, said at least one management action comprising: restitution, by a user interface of the first client terminal, of information, depending on the audio capacity data received, indicating whether said at least one second client terminal is capable of receiving an audio data stream from the first client terminal.
- obtaining a) comprises: e) sending a mediation server a digital marking code request, said request comprising an identifier of the first client terminal; f) receiving, in response to said request, the digital marking code assigned to the first client terminal.
- the first method comprises: determining, when establishing the communication session, an identifier of the audio and/or video conference; and inserting in the digital marking code request the identifier of the audio conference before sending to the mediation server, so as to allow said mediation server to record the digital marking code in association with the identifier of the first terminal client and the identifier of the audio and/or video conference.
- an identifier of the audio and/or video conference can notably allow the mediation server to recognize a request associated with the audio and/or video conference in progress, and thus to obtain or generate a code (such as a digital marking code for example) unique for the first client terminal.
- the mediation server can in particular supervise an audio stream reception test for a plurality of distinct audio and/or video conferences, including when the first client terminal T1 takes part in several conferences simultaneously or successively over a given period.
- the first audio data stream is generated from acoustic signals acquired by a first microphone coupled to the first client terminal. It is thus possible to carry out an audio test while transmitting sounds from the first client terminal to the second client terminal during the audio and/or video conference.
- the acoustic signals from which the first audio data stream is generated represent a background noise acquired by the first microphone, the intensity of the background noise being lower than a first intensity value. It is thus possible to carry out an audio test while the user of the first client terminal is silent (not speaking) during the conference in progress.
- the sending of the digital marking code request is triggered on detection, by means of the first microphone of the first client terminal, of a period of silence of a duration at least equal to a first duration, during which a background noise of an intensity lower than said first intensity value is detected. It is thus possible to automatically trigger an audio test when the user of the first client terminal is silent (not speaking) during the conference in progress.
- the sending of the digital marking code request is triggered upon detection that the first microphone is deactivated for at least a second duration.
- the first audio data stream is generated by emulating random noise. It is thus possible, at least in certain embodiments, to carry out an audio test in a reliable and robust manner, independently of any audio data stream likely to be transmitted by the first client terminal during the conference in progress.
- At least some of the steps a)-d) of the method implemented on the first client terminal can be reiterated during said communication session, so as to check several times (for example periodically) whether said at least one second client terminal is capable of receiving an audio data stream transmitted by the first client terminal. It is thus possible to check over a given period, repeatedly (periodically or regularly) or continuously, whether the second client terminal is capable of receiving an audio data stream sent by the first client terminal during the conference in progress.
- the audio capability data received represents that said at least one second client terminal has detected the digital marking code in a stream of audio data received from the audio conferencing server
- the information restored by the user interface indicate that said at least one second client terminal is capable of receiving an audio data stream emitted by the first client terminal. The user of the first client terminal can thus ensure that he is or will be heard during the conference in progress.
- the first client terminal sends to the mediation server a notification informing of the sending of the marked data stream to the audio and/or video conference server. It is thus possible for the mediation server to be informed when an audio test is initiated by the first client terminal. From this notification, the mediation server can in particular determine whether it receives a notification from the second client terminal, indicating that the latter has detected the digital marking code.
- said at least one management action comprises: if the received audio capability data represents that said at least one second client terminal has not detected the digital marking code in the mixed audio data stream received from the audioconference server, changing an audio configuration of the first client terminal.
- the first client terminal can adapt its configuration when an audio stream reception problem is detected, and therefore improve the chances that the user of the first client terminal will be heard by the second client terminal when the conference.
- the first method comprises, successively for each of a plurality of audio configurations, as long as a first audio condition is not satisfied: configuration of the first client terminal according to said audio configuration; and repeating at least some of steps a)-d).
- the first method comprises, before sending the marked audio data stream to the audio and/or video conference server: activation of the first microphone of the first client terminal; deactivation of an echo cancellation function so as to allow acoustic acquisition by the first microphone of the first client terminal of an acoustic emission from a first loudspeaker coupled to said at least one first client terminal; generation of an acoustic test signal by means of the first loudspeaker; acoustic acquisition, by means of the first microphone, of the acoustic test signal emitted by the first loudspeaker; and determination, from a result of said acoustic acquisition, of acoustic capacity data characterizing the acoustic capacities of the first microphone; wherein the information returned in d) by the user interface is further representative of the acoustic capabilities of the first microphone of the first client terminal.
- the first method further comprises: receiving, from the mediation server, acoustic capacity data representative of acoustic capacities of a second loudspeaker coupled to said at least one second client terminal to be produced an acoustic output; the information returned in d) by the user interface also being representative of the acoustic capacities of the second loudspeaker of the second client terminal.
- the user of the first client terminal can thus be informed of the capacity of the acoustic processing chain of the first client terminal to produce an acoustic emission (output).
- the invention also relates to a second method implemented by a second client terminal during a communication session in cooperation with an audio and/or video conference server. managing audio data stream exchanges between a first client terminal and the second client terminal during an audio and/or video conference.
- the second method comprises: reception, from the audio and/or video conference server, of an audio data stream; and sending a notification comprising a code embedded in said received audio data stream, in association with an identifier of the second client terminal.
- the second method further comprises, upon detection of said code in said received audio data stream: activation (C100) of a second microphone (MIC2) coupled to the second client terminal; deactivation (C102) of an echo cancellation function (F2) so as to allow acoustic acquisition by the second microphone of an acoustic emission from a second loudspeaker (HP2) coupled to said second client terminal; generation (C104) of an acoustic test signal (SA2) by means of the second loudspeaker; acoustic acquisition (C106), by means of the second microphone, of the acoustic test signal emitted by the second loudspeaker; determination (C108), from a result of said acoustic acquisition, of acoustic capacities (DTB2) of the second loudspeaker of the second client terminal to produce an acoustic emission; and sending to the mediation server (SV2) the acoustic capacities of the second loudspeaker.
- the second method comprises: g) reception, from the audio and/or video conference server, of a stream of marked audio data; h) detection, in the marked audio stream, of a digital marking code embedded in the watermarked audio data stream; and i) sending, to a mediation server, a notification indicating the detection of the digital marking code, said notification comprising the digital marking code in association with an identifier of the second client terminal.
- Sending said notification to the mediation server allows said server to generate audio capacity data indicating whether the second client terminal has detected the code integrated into the stream received.
- the mediation server can in particular transmit this audio capacity data to the first client terminal in order to indicate to it whether or not the second client terminal is able to receive an audio stream emitted by the first client terminal during the conference.
- the second method further comprises, in response to the detection h): activation of a second microphone coupled to the second client terminal; deactivation of an echo cancellation function so as to allow acoustic acquisition by the second microphone of an acoustic emission from a second loudspeaker coupled to said second client terminal; generation of an acoustic test signal by means of the second loudspeaker; acoustic acquisition, by means of the second microphone, of the test acoustic signal emitted by the second loudspeaker; determination, from a result of said acoustic acquisition, of the acoustic capacities of the second loudspeaker of the second client terminal to produce an acoustic emission; and sending to the mediation server the acoustic capacities of the second loudspeaker.
- the invention also relates to a third method implemented by a system, comprising a first client terminal and a second client terminal respectively executing the first and second methods defined above, in at least some of their embodiments, and described in specific examples below.
- the invention relates to a third method implemented by a client system, comprising a first client terminal and a second client terminal, during a communication session in cooperation with an audio and/or video conference server managing exchanges of audio data streams between the first client terminal and the second client terminal during an audio and/or video conference, in which the first terminal executes a first method as defined above; in which the second terminal executes a second method as defined above; the information returned in d) by the first client terminal indicating that the second client terminal is capable of receiving an audio data stream transmitted by the first client terminal.
- the third method further comprises (for example in response to detection h), the following steps implemented by said second client terminal: activation of a second microphone coupled to the second client terminal; deactivation of an echo cancellation function so as to allow acoustic acquisition by the second microphone of an acoustic emission from a second loudspeaker coupled to said second client terminal; generation of an acoustic test signal by means of the second loudspeaker; acoustic acquisition, by means of the second microphone, of the test acoustic signal emitted by the second loudspeaker; determination, from a result of said acoustic acquisition, of the acoustic capacities of the second loudspeaker of the second client terminal to produce an acoustic output; and sending to the mediation server the acoustic capacities of the second loudspeaker; the method further comprising the following step implemented by the first client terminal: reception, from the mediation server, of acoustic capacity data representative of said acoustic capacities of the second louds
- the invention also relates to a fourth method implemented by a mediation server in cooperation with a plurality of client terminals (comprising a first client terminal and a second client terminal) participating in an audio and/or video conference during which audio data streams are exchanged via an audio and/or video conference server.
- a mediation server in cooperation with a plurality of client terminals (comprising a first client terminal and a second client terminal) participating in an audio and/or video conference during which audio data streams are exchanged via an audio and/or video conference server.
- the fourth method comprises: sending to a first client terminal a code assigned to the first client terminal and registered, in association with an identifier (ID1) of the first client terminal; upon receipt, from a second client terminal, of a notification comprising the code assigned to said first client terminal in association with an identifier of the second client terminal; determining audio capability data indicating whether the second client terminal is capable of receiving an audio data stream from the first client terminal; and sending said audio capability data to the first client terminal.
- ID1 an identifier
- an absence of reception of said notification is determined if no said notification, indicating that the second client terminal (T2) has detected the code assigned to said first terminal, is received within a first period at count from a reference instant.
- the fourth method comprises: j) sending to a first client terminal a digital marking code assigned to the first client terminal and recorded, in marking data of said mediation server, in association with an identifier of the first client terminal; k) determining, from the marking data, whether a notification indicating that a second client terminal has detected the digital marking code is received from said second client terminal, said notification comprising the digital marking code in association with a identifier of the second client terminal;
- the mediation server is thus capable of supervising the audio test initiated by the first client terminal to assess whether the second client terminal is able to receive an audio data stream emitted by the first client terminal during the conference.
- the mediation server determines that the second client terminal has not detected the digital marking code if said mediation server does not receive a notification to this effect from the second client terminal.
- the mediation server executes steps j) to m) for a plurality of second client terminals, so as to send in m) to the first client terminal audio capacity data of each of the plurality of second client terminals.
- the mediation server can thus supervise audio tests initiated by the first client terminal so as to assess whether a plurality of second client terminals participating in the conference are able to receive an audio data stream transmitted by the first client terminal.
- the different steps of the first, second, third and fourth methods as defined above, and as described below in specific examples, are determined by computer program instructions.
- the invention also relates to computer programs on information media (or recording media), these programs being able to be implemented in terminals or in servers, or more generally in computers, these programs comprising instructions adapted to the implementation respectively of the steps of the first, second, third and fourth methods.
- each of the methods of the invention can be implemented by means of a non-volatile memory storing computer program instructions and a processor executing these instructions.
- module may correspond in this document to a software component, a hardware component or a set of hardware and software components.
- a software component corresponds to one or more computer programs, one or more sub-programs of a program, or more generally to any element of a program or software capable of implementing a function or a set of functions, as described below for the module concerned.
- Such a software component can be executed by a data processor of a physical entity (terminal, server, gateway, router, etc.) and is likely to access the hardware resources of this physical entity (memories, recording media, communication bus, electronic input/output cards, user interfaces, etc.).
- a hardware component can correspond to any element of a hardware assembly (or hardware) able to implement a function or a set of functions, according to what is described below for the module concerned. It can be a hardware component that can be programmed or has an integrated processor for executing software, for example an integrated circuit, a smart card, a memory card, an electronic card for executing firmware ( firmware), etc
- the present invention also relates to a first client terminal (and respectively a second client terminal) configured to implement the first method (and respectively the second method) of the invention as defined above and described below in examples individuals.
- the present invention also relates to a system comprising the first and second client terminals of the invention, configured to implement the third method of the invention.
- the present invention also relates to a mediation server configured to implement the fourth method of the invention as defined above and described below in specific examples. It should be noted that the different embodiments mentioned above (as well as those described below) in relation to the different methods of the invention as well as the associated advantages apply in a similar way to the client terminals, system and server of mediation of the invention.
- the associated device (or physical entity) of the invention may comprise a corresponding module configured to perform said step.
- FIG. 1 schematically represents an environment comprising client terminals and a mediation server, according to a particular embodiment of the invention
- Figure 2 schematically represents a first client terminal according to at least one embodiment of the invention
- Figure 3 schematically represents a second client terminal according to at least one embodiment of the invention
- FIG. 4 schematically represents a mediation server according to at least one embodiment of the invention
- FIG. 5 represents, in the form of a diagram, the process steps implemented by client terminals and by a mediation server, according to certain embodiments of the invention
- FIG. 6 represents, in the form of a diagram, the process steps implemented by client terminals and by a mediation server, according to certain embodiments of the invention
- FIG. 7 represents, in the form of a diagram, the steps of a method implemented by a first client terminal, according to at least one embodiment of the invention
- FIG. 8 represents, in the form of a diagram, the steps of a method implemented by a second client terminal, according to at least one embodiment of the invention.
- audio conference also called audio conference
- videoconference also called video conference
- audio and/or video conferences involve the exchange of at least audio type data.
- audio conferences involve exchanges of audio streams
- video conferences involve exchanges of image streams and audio streams (video streams).
- the invention proposes in particular to allow a user participating in an audio and/or video conference (also called more simply “conference”) to verify that he is or will be heard by at least one other given participant.
- the invention uses, according to its various embodiments, a code, assigned to a first client terminal, such as a digital marking code, which is integrated into an audio data stream to determine whether at least one second terminal client is able to receive an audio data stream transmitted by the first client terminal.
- a first client terminal can be configured to send a stream of tagged audio data to an audio and/or video conferencing server (also called “conference server”) managing audio data stream exchanges between the first client terminal and at least one second client terminal during an audio and/or video conference.
- This marked audio data stream may comprise a code, such as a digital marking code, integrated for example by digital watermarking in an audio data stream.
- the first client terminal may further receive, from a mediation server, audio capability data representative of whether said at least one second client terminal has detected the digital marking code in an audio data stream received from the audio and/or video conference. It is thus possible for the first client terminal to determine whether said at least one second client terminal is capable of receiving an audio data stream from the first client terminal.
- the invention relates in particular to a second client terminal configured to process a stream of audio data marked as indicated above, a corresponding mediation server, as well as corresponding methods and computer program.
- first(s) (or first(s)), “second(s)”, etc. are used in this document by arbitrary convention to identify and distinguish different elements (such as terminals, process) implemented in the embodiments described below.
- FIG. 1 schematically represents, by way of non-limiting example, an environment comprising a first client terminal T1, a second client terminal T2, an audio and/or video conference server SV1 and a mediation server SV2 (also called control).
- client terminals T1 and T2 are used respectively by users UR1 and UR2 to communicate by audio during an audio and/or video conference.
- the conference server SV1 manages exchanges of audio data streams FX between the client terminals participating in the conference.
- the number and the nature of the client terminals participating in the communication session during the conference may vary depending on the case.
- the number of second client terminals within the meaning of the invention, of which the first client terminal T1 tests the audio reception can vary depending on the case.
- second client terminals T3 and T4 can also cooperate with the conference server SV1 and with the mediation server SV2, although implementations of the invention are also possible with only two client terminals, namely the first client terminal T1 and the second client terminal T2 in this example.
- the principle of the invention is described below in specific examples mainly involving the terminal T1 as the first client terminal and the terminal T2 as the second client terminal within the meaning of the invention.
- the invention can however be applied analogously to a plurality of second client terminals (T2, T3 and/or T4 for example) operating as second terminals within the meaning of the invention.
- each of the client terminals T1-T4 can also be configured to act both as a first terminal and as a second terminal within the meaning of the invention.
- the client terminals are each capable of cooperating with the conference server SV1 via any communication network, such as the Internet, or an Intranet network or any other appropriate network.
- the T1-T4 client terminals can be computers (PCs, laptops, etc.), tablets, smart phones or "smartphones", or any other type of terminal capable of exchanging audio data streams during an audio conference. and/or video with at least one other participant.
- the conference server SV1 is configured to manage audio communications during a communication session established with the client terminals T1-T4 during an audio and/or video conference. To do this, the conference server SV1 is able to establish the communication session with each of the client terminals, then to receive the audio data streams FX transmitted or generated by the client terminals T1-T4. The conference server SV1 then processes these audio data streams in order to redistribute them to the other participants. More particularly, the conference server SV1 can for example decode the audio data streams FX received according to appropriate codecs (those used by the corresponding client terminals), carry out a mixing of these audio data and generate a stream of audio data mixed by a re-encoding of the mixed audio data. This mixed audio data stream can then be sent to the various client terminals so that their users can hear all the audio communications exchanged by the participants.
- the client terminals T1-T4 can also be capable of cooperating with the mediation server SV2 through any appropriate communication network.
- the mediation server SV2 can be configured for example to evaluate the audio capacities of at least some of the client terminals and to transmit to at least some of the client terminals audio capacity data DTA representative of capacities audio from at least some of the client terminals T1-T4.
- the mediation server SV2 can transmit to at least some of the client terminals (for example to each) a code WT, such as a digital marking code, which is assigned to it.
- a code WT such as a digital marking code
- the mediation server SV2 can send digital marking codes WT 1 and WT2 to the client terminals T 1 and T2, respectively. As described later, these digital marking codes can be used subsequently to test the ability of client terminals to receive an audio data stream emitted by, in particular, the first client terminal T1 in this example.
- the mediation server SV2 can also send to client terminals acoustic capacity data DTB (FIG. 1) representative of the acoustic capacities of client terminals, as described later.
- DTB acoustic capacity data representative of the acoustic capacities of client terminals
- the client terminal T 1 comprises a processor 2, a volatile memory (RAM) 4, a non-volatile memory 6, a communication interface INT 1 , a user interface IU1 and a non-volatile memory. volatile rewritable MR1.
- the memory 6 is for example a rewritable non-volatile memory or a read only memory (ROM), this memory constituting a recording medium (or information medium) in accordance with a particular embodiment, readable by the client terminal T1, and on which is recorded a first computer program PG1 conforming to a particular embodiment.
- This computer program PG1 includes instructions for the execution of the steps of a first method (also called first management method) according to a particular embodiment, as described in more detail later.
- the client terminal T1 is able to use its communication interface INT1 to communicate with the conference server SV1 and with the mediation server SV2.
- the nature of this interface depends on the type of communication network used.
- the rewritable non-volatile memory MR1 (for example of the flash or EEPROM type) is capable of storing an identifier ID1 of the client terminal T1, a code, such as a digital marking code, WT 1 and audio capacity data DTA. If necessary, the memory MR1 can also be used to store acoustic capacity data DTB.
- a first loudspeaker HP1 and a first microphone MIC1 are coupled to the first client terminal T 1 so that the user UR1 can hear and transmit audio communications during an audio conference and/or or video.
- Variant embodiments without at least one of the loudspeaker HP1 and the microphone MIC1 are however possible.
- the loudspeaker HP1 enables the generation of sounds (known as acoustic signals) from audio data while the microphone MIC1 enables the generation of audio data by acoustic acquisition of sounds (or acoustic signals).
- the loudspeaker HP1 and the microphone MIC1 constitute audio means which can be used by the processor 2 by means of an audio card and/or any other hardware and/or software means which are configured according to a particular audio configuration.
- the loudspeaker HP1 can be configured to emit in particular an acoustic test signal denoted SA1 which the microphone MIC1 can acquire acoustically.
- the processor 2 uses, for example, the volatile memory 4 to control the various components (memories, communication interface, etc.) and to carry out the various operations and functions necessary for the operation of the client terminal T1, including for executing the program of computer PG1 during the implementation of the first method of the invention.
- the second client terminal T2 has a structure identical to that of the first terminal T1, so that these two terminals can be used interchangeably to execute the first and second processes within the meaning of the invention.
- the second client terminal T2 comprises a processor 10, a volatile memory (RAM) 12, a non-volatile memory 14, a communication interface INT2, a user interface IU2 and a rewritable non-volatile memory MR2 .
- the memory 12 is for example a rewritable non-volatile memory or a read-only memory (ROM), this memory constituting a recording medium (or information medium) in accordance with a particular embodiment, readable by the client terminal T2, and on which is recorded a second computer program PG2 conforming to a particular embodiment.
- This computer program PG2 includes instructions for the execution of the steps of a second method (also called second management method) according to a particular embodiment, as described in more detail later.
- the client terminal T2 is able to use its communication interface INT2 to communicate with the conference server SV1 and with the mediation server SV2. As already indicated, the nature of this interface depends on the type of communication network used.
- the rewritable non-volatile memory MR2 (for example of the flash or EEPROM type) is able to store an identifier ID2 of the client terminal T2, a digital marking code WT2 and audio capacity data DTA. If necessary, the MR2 memory can also be used to store acoustic capacity data DTB.
- a second loudspeaker HP2 and a second microphone MIC2 are coupled to the second client terminal T2 so that the user UR2 can hear and transmit audio communications during an audio conference and/or video.
- Variant embodiments without at least one of the loudspeaker HP2 and the microphone MIC2 are however possible.
- the loudspeaker HP2 allows the generation of acoustic signals from audio data while the microphone MIC2 allows the generation of audio data by the acoustic acquisition of acoustic signals.
- the loudspeaker HP2 and the microphone MIC2 constitute audio means which can be used by the processor 10 by means of an audio card and/or any other hardware and/or software means which are configured according to a particular audio configuration.
- the loudspeaker HP2 can be configured to emit in particular an acoustic test signal denoted SA2 which the microphone MIC2 can acquire acoustically.
- the processor 10 uses, for example, the volatile memory 12 to control the various components (memories, communication interface, etc.) and to carry out the various operations and functions necessary for the operation of the client terminal T2, including for executing the program of computer PG2 during the implementation of the second method of the invention.
- the first client terminal T1 and the second client terminal T2 together form a client system SY1, the latter possibly also comprising one or more client terminals, such as the terminals T3 and/or T4 for example.
- the client system SY1 is configured to implement a third method within the meaning of the invention by executing the instructions of the computer programs PG1 and PG2 by the client terminals T1 and T2.
- the mediation server SV2 comprises a processor 20, a volatile memory (RAM) 22, a non-volatile memory 24, a communication interface INT3 and a rewritable non-volatile memory MR3.
- the memory 24 is for example a rewritable non-volatile memory or a read only memory (ROM), this memory constituting a recording medium (or information medium) in accordance with a particular embodiment, readable by the mediation server SV2, and on which is recorded a third computer program PG3 conforming to a particular embodiment.
- This computer program PG3 comprises instructions for the execution of the steps of a fourth method according to a particular embodiment, as described in more detail later.
- the mediation server SV2 is able to use its communication interface INT3 to communicate with the client terminals T 1 and T2. As already indicated, the nature of this interface depends on the type of communication network used. In this example, the mediation server SV2 is also able to communicate by means of its communication interface INT3 with the client terminals T3 and/or T4, although implementations without these additional client terminals are possible as already indicated.
- the rewritable non-volatile memory MR3 (for example of the flash or EEPROM type) is able to store marking data DM and audio capacity data DTA.
- the marking data DM comprises at least one digital marking code WT in association with an identifier ID of a respective client terminal to which said digital marking code WT has been assigned.
- the marking data DM can thus comprise a plurality of pairs (ID, WT), a distinct digital marking code WT being assigned to each client terminal.
- the processor 20 uses, for example, the volatile memory 22 to control the various components (memories, communication interface, etc.) and to perform the various operations and functions necessary for the operation of the mediation server SV2, including to execute the program for computer PG3 during the implementation of the fourth method of the invention.
- the processor 2 controlled by the computer program PG1 here implements a certain number of modules in the first client terminal T1, namely: a module for obtaining MD2, a MD4 sending module, an MD6 receiving module, an MD8 control module, and possibly also an MD10 acoustic test module.
- the obtaining module MD2 is configured to obtain an audio data stream FX1 marked by integrating a digital marking code WT1 into a first audio data stream by digital watermarking. As described below, this audio data stream marked FX1 can be obtained in various ways by the first client terminal T1.
- the MD4 sending module is configured to send the audio data stream marked FX1 to the audio and/or video conference server SV1.
- the reception module MD6 is configured to receive, from the mediation server SV1, audio capacity data DTA representative of whether said at least one second client terminal T2 has detected the digital marking code WT 1 in an audio data stream FX received from audio and/or video conferencing server SV1.
- the MD8 control module is configured to trigger at least one audio and/or video conference management action based on the DTA audio capability data received.
- the action(s) performed can be of various types and can be adapted as appropriate.
- Said at least one management action may comprise, for example, the restitution, by the user interface IU1 of the first client terminal T1, of information which is a function of the DTA audio capacity data received and which indicates whether said at least one second client terminal T2 is able to receive an audio data stream FX from the first client terminal T 1.
- the acoustic test module MD10 can also be configured to carry out an acoustic test of the audio equipment of the first client terminal T1, in particular to carry out an acoustic test of the microphone MIC1 and/or of the loudspeaker HP1.
- the processor 10 controlled by the computer program PG2 here implements a certain number of modules in the second client terminal T2, namely: a reception module MD20, a module detection module MD22, a sending module MD24, and possibly also an acoustic test module MD26.
- the reception module MD20 is configured to receive, from the audio and/or video conference server, a stream of marked audio data denoted FX2.
- the detection module MD22 is configured to detect, in the audio stream marked FX2, a digital marking code WT (WT 1 for example), the latter being integrated into the audio data stream FX2 by digital watermarking.
- WT 1 digital marking code
- the sending module MD24 is configured to send, to the mediation server SV2, a notification indicating the detection of the digital marking code WT (WT1 for example), said notification comprising the digital marking code in association with the identifier ID2 of the second client terminal T2.
- the acoustic test module MD26 can also be configured to carry out an acoustic test of the audio equipment of the second client terminal T2, in particular to carry out an acoustic test of the microphone MIC2 and/or of the loudspeaker HP2.
- the processor 20 controlled by the computer program PG3 here implements a certain number of modules in the mediation server SV2, namely: a sending module MD40, a first determination module MD42, a second determination module MD44 and a sending module MD46.
- the sending module MD40 is configured to send to the first client terminal T1 a digital marking code WT1 assigned to the first client terminal T1 and to record, in marking data DM of the mediation server SV2, in association with the identifier ID1 of the first client terminal T1.
- the marking data DM is stored in the non-volatile memory MR3.
- the first determination module MD42 is configured to determine, from the recorded marking data DM, whether a notification indicating that the second client terminal T2 has detected the marking code W1 is received from the second client terminal T2, this notification comprising the digital marking code W1 in association with the identifier ID2 of the second client terminal T2.
- the second determination module MD44 is configured to determine, from a result of the determination carried out by the first determination module MD42, audio capacity data DTA2 indicating whether the second client terminal T2 is able to receive a data stream audio FX coming from the first client terminal T 1.
- the sending module MD46 is configured to send to the first client terminal T1 the audio capacity data DTA2 determined by the second determination module MD44.
- the sending module MD46 is also configured to send to the first client terminal T1 acoustic capacity data DTB2 of the second audio terminal T2, these acoustic capacity data DTB2 being able to characterize the acoustic equipment of the second client terminal T2, and in particular its microphone MIC2 and/or its loudspeaker HP2.
- first client terminal T1 and the second client terminal T2 as previously described with reference to Figures 1-3 respectively implement a first method and a second method by executing the computer programs PG1 and PG2. These first and second methods collectively form a third method implemented by the system SY 1 represented in FIG. 1.
- the mediation server SV2 as previously described with reference to FIGS. 1 and 4 implements a fourth method by executing the PG3 computer program.
- the users UR1 and UR2 respectively use the client terminals T1 and T2 to communicate together, at least by audio, during an audio and/or video conference. To do this, it is considered that a communication session is established by the client terminals T1 and T2 in cooperation with the audio and/or video conference server SV1 which manages the audio data streams FX between the first client terminal T1 and the second client terminal T2 during an audio and/or video conference.
- the mediation server SV2 sends a digital marking code WT1 which is received by the first client terminal T1 at B2.
- This digital marking code WT 1 which can take various forms, is assigned to the first client terminal T1.
- This digital marking code WT1 is a code (or marker) which can be integrated by digital watermarking (also called “watermarking”) in an audio data stream.
- the first terminal T 1 obtains an audio data stream FX1, these audio data being marked by integration of the digital marking code (also called "mark”) WT1 in an audio data stream , for example by watermarking.
- the digital watermarking technique makes it possible to insert marking information into host data, in this case audio data, so that this marking information is not perceptible (audible) for a user, for example.
- bits of the digital marking code are encoded into the audio data stream which serves as the carrier signal.
- the first client terminal T 1 determines or generates (B4) the marked audio data stream FX1 from the digital marking code WT1 received at B2, by integrating the digital marking code WT 1 by digital watermarking into a first watermarking audio data stream.
- the first client terminal T1 obtains in B4 the stream of audio data marked FX1 in another way.
- the first client terminal T1 does not receive the digital marking code WT1 from the mediation server DV2 but obtains this code in B2 in another way, for example by consulting its memory MR1 in which said code is prerecorded WT 1 .
- the first client terminal T 1 can then insert the digital marking code WT1, for example by digital watermarking, into an audio data stream FX to obtain the audio data stream marked FX1.
- the audio data stream marked FX1 is pre-recorded in a memory (for example MR1) of the first client terminal T1 and the latter consults its memory to obtain in B4 the audio data stream marked FX1, so that the step B2 of reception is not necessary either.
- a memory for example MR1
- the mediation server SV2 records in its memory (here the memory MR2), during a step D3 d recording (FIG. 5), marking data DM associating the identifier ID1 of the first client terminal T1 with the digital marking code WT1 assigned to said first client terminal T 1 .
- the first client terminal T1 sends the audio data stream marked FX1 to the conference server SV2.
- the conference server SV2 receives the audio data stream marked FX1 during a reception step A6.
- the conference server SV1 then sends (step A8, FIG. 5) to the second client terminal T2 a second audio data stream marked FX2 comprising the digital marking code WT1 integrated for example by digital watermarking.
- the conference server SV1 determines beforehand the stream of audio data marked FX2 from a processing of the stream of audio data marked FX1 received at A6.
- the audio data stream marked FX2 comprises the audio data stream marked FX1.
- the audio data stream marked FX2 can be a mixed audio data stream generated by the conference server SV1 by mixing (or combining) the audio data stream marked FX1 received at A6 with at least one other audio data stream transmitted by another client terminal, for example by the second client terminal T2.
- the SV2 mediation server can thus mix the audio streams coming from the different client terminals when users speak or emit sounds so as to redistribute audio streams to all participants.
- the conference server SV1 decodes (from codecs) each audio data stream that it receives from the client terminals (including the audio data stream marked FX1), then mixes the audio data thus decoded to generate a stream of mixed audio data which are marked since they incorporate the digital marking code WT 1.
- the conference server SV1 then generates (from codes) the stream of marked audio data FX2 by re-encoding this mixed audio data.
- the second client terminal T2 receives, during a reception step C8, the audio data stream marked FX2 coming from the conference server SV1.
- the second client terminal T2 detects the digital marking code WT1 integrated into the marked audio data stream FX2, for example by digital watermarking. To do this, the second client terminal T2 analyzes the incoming audio data stream and checks whether this stream contains a digital marking code (or a mark). It is assumed in this example that the second client terminal T2 is capable of recognizing a digital marking code WT but does not know the client terminal associated with each digital marking code WT (although other examples are possible).
- the second client terminal T2 it is not necessary for the second client terminal T2 to restore the audio data stream marked FX2 in acoustic form by means in this example of the loudspeaker HP2, although this is possible.
- the sound reproduction of the FX2 audio stream can however be useful when at least one of the participants in the audio and/or video conference is emitting sounds.
- the second client terminal T2 sends to the mediation server SV2 a notification NF1 indicating the detection of the digital marking code WT1, this notification NF1 comprising the digital marking code WT1 in association with the identifier ID2 of the second client terminal T1.
- the mediation server SV2 receives the notification NF1 during a reception step D12 (FIG. 5).
- the mediation server SV2 determines, from the marking data DM recorded in its memory MR3, whether a notification NF1 - indicating that the second client terminal T2 has detected the digital marking code WT1 - Is received from the second client terminal T2, this notification NF1 comprising the digital marking code WT1 in association with the identifier ID2 of the second client terminal T2.
- the execution of the fourth method by the mediation server SV2 may vary at this stage depending on the result of the determination step D14.
- the result of this step D14 can be positive (the mediation server SV2 detects the notification NF1) or negative (the mediation server SV2 does not detect the notification NF1).
- the mediation server SV2 receives from the second client terminal T2 a notification indicating the detection of a digital marking code, it consults its marking data DM to determine whether this notification includes the digital marking code WT1 associated with identifier ID1 in its DM tagging data. If so, the mediation server SV2 determines that the second terminal client T2, identified by the identifier ID2 included in the notification NF1 received, has detected the digital marking code WT1 associated with the first client terminal T1.
- the mediation server SV2 determines in D14 an absence of reception of the notification NF1 in D12 if no said notification, indicating that the second client terminal T2 has detected the digital marking code WT1, is received in a first delay DL1 from a reference instant tO.
- the first delay DL1 expires without the notification NF1 having been received by the mediation server SV2, the latter detects that no notification NF1 indicating that the second client terminal T2 has detected the digital marking code WT1 n has been received.
- this reference instant may vary depending on the case, and may correspond for example to an instant during which the sending D2 is carried out.
- the mediation server SV2 determines, from a result of the determination D14, audio capacity data DTA2 indicating whether the second client terminal T2 is able to receive a data stream audio FX from the first client terminal T1.
- the audio capacity data DTA2 characterizes the capacity of the second client terminal T2 to receive an audio data stream FX transmitted by the first client terminal T1 during the audio and/or video conference.
- the detection by the second client terminal T2 of the digital marking code WT1 indicates that the second client terminal T2 has been able to receive the audio data stream marked FX2 comprising the audio data stream marked FX1 emitted at B6 by the first client terminal T 1 .
- the audio capacity data DTA2 generated in D16 consequently indicate that the second client terminal T2 is able to receive an audio data stream transmitted by the first client terminal T 1 .
- the second client terminal T2 has not detected the digital marking code WT2, this means that it has not been able to receive the audio data stream marked FX2 transmitted by the conference server SV1.
- a negative result of the determination D14 means that the test of reception of an audio stream from the first client terminal T1 to the second client terminal T2 has failed.
- the audio capacity data DTA2 generated at D16 by the mediation SV2 indicate that the second client terminal T2 is not able to receive an audio data stream from the first client terminal T 1.
- the mediation server SV2 can optionally update previous audio capacity data DTA2 already stored in its memory MR3.
- the mediation server SV2 then sends to the first client terminal T1 the audio capacity data DTA2 determined in D16.
- the mediation server SV2 also sends (D18) to the first client terminal T1 acoustic capacity data DTB representative of acoustic capacities of the second loudspeaker HP2 coupled to the second client terminal T2 to produce a transmission (or output) acoustic.
- acoustic capacity data DTB can be obtained in various ways by the mediation server SV2, specific embodiments being described below.
- the first client terminal T 1 receives the audio capacity data DTA2, and if necessary the acoustic capacity data DTB2, during a reception step B20.
- the data received may optionally be associated with the identifier ID2 of the second client terminal T2 to allow the first client terminal T 1 to determine that it is data characterizing the second client terminal T2.
- the first client terminal T 1 then triggers, based on the DTA2 capacity data (and possibly the DTB2 acoustic capacity data) received, at least one action for managing the audio conference and/or current video.
- the management action(s) executed by the first client terminal T1 may vary depending on the case and consist in adapting the operation of the first client terminal T1 according to the ability or non-ability of the second client terminal T2 to receive a data stream audio emitted by the first client terminal T1 (and possibly the ability to reproduce the corresponding sounds) during the audio and/or video conference.
- the first client terminal T1 restores (or renders), by means of its user interface IU1, information IF1 which is a function of the audio capacity data DTA2 received (and also possibly acoustic capacity data DTB2 received), this information IF1 indicating whether the second client terminal T2 is capable of receiving an audio data stream FX (and possibly whether it is capable of restoring the corresponding sounds).
- This restitution which can take various forms (visual, auditory, etc.) can help, at least in certain embodiments, the user UR1 to determine whether he is, or will be, heard correctly when he speaks or emits sounds during the audio and/or video conference.
- the first client terminal T1 modifies at least one operating parameter or an audio configuration according to which it operates to exchange audio data streams in cooperation with the conference server SV1 at the course of the conference.
- the first client terminal T1 switches from the audio and/or video conference in progress to a second audio and/or video conference (backup or replacement conference) in which also cooperate at least the terminals T1 and T2 to exchange audio streams.
- the first terminal T1 can for example cooperate with at least the second client terminal T2 in several conferences simultaneously, or even in several successive conferences over a given period.
- a switch to a new conference can allow the first client terminal T1 to resolve an audio reception problem identified from the data DTA2 (and possibly DTB2) received at B20 (FIG. 5).
- the conference server SV1 can send the mixed audio data stream FX2 to a plurality of second client terminals, for example to T2, T3 and T4.
- the client terminals T3 and T4 can process the audio data stream marked FX2 by executing the steps C8-C12 in the same way as the second client terminal T2.
- the mediation server SV2 can then execute for example steps D12, D14 and D16 for at least one (for example each) of the second client terminals T2-T4 so as to generate in D16 audio capacity data DTA2, DTA3 and/or DTA4 respectively indicating whether said second client terminal has detected the code digital marking WT1 in an audio data stream received from the audio and/or video conference server SV1.
- the mediation server SV2 can thus send in D18, to the first client terminal T1, the audio capacity data DTA2, DTA3 and/or DTA4 (as well as possibly acoustic capacity data DTB2, DTB3 and DTB4 associated respectively with the terminals T2, T3 and T4).
- the management action or actions executed in B22 by the first client terminal T1 can be a function of the various data received.
- the invention involves the sending by a first client terminal of an audio data stream incorporating a digital marking code.
- a second third-party terminal can only detect the marking code if it has the capacity to receive and correctly process the audio data stream coming from the first client terminal. If the second client terminal detects the digital marking code, it then informs the mediation server SV2 thereof, which updates its audio capacity data, so that they indicate that the second client terminal is capable of receiving the audio data streams sent by the first terminal.
- the digital marking technique may involve the use of an audio data stream to carry the digital marking code.
- This code which may be inaudible to a user of the second client terminal, is used to mark the audio data stream reliably and securely to verify that the transmission of the audio stream from the first client terminal to the second client terminal is operational.
- the conference server SV1 is for example in charge of managing the audio data stream exchanges between the first client terminal T1 and the second client terminals T2-T4.
- the conference server SV1 can be configured to process all the audio data streams transmitted by the client terminals so as to produce a mixed audio data stream FX2 which is distributed to all of the client terminals (or at least to second customer terminal T2).
- the processing carried out by the conference server SV1 can in particular comprise a decoding of the audio data streams FX received (including the stream FX1) and a mixing of these streams so as to produce a stream of mixed audio data which is re-encoded before sending to client terminals.
- the technique of marking by digital watermarking can offer, at least in certain embodiments, good robustness insofar as the digital marking code WT1 present in the audio data stream marked FX1 received (A6, FIG. 5) coming from the first client terminal T 1 inherently resists the various processing operations of decoding, mixing, encoding, etc. made by the mediation server SV1.
- the mixed audio data stream FX2 sent at A8 to the second client terminal T2 comprises the same digital marking code WT 1 as that present in the marked audio data stream FX1 received at A6 from the first client terminal T 1.
- the first client terminal T1 and the second client terminal T2 respectively execute the computer programs PG1 and PG2 to implement a first method and a second method.
- these first and second methods collectively form a third method implemented by the system SY1 represented in FIG. 1.
- the mediation server SV2 (FIGS. 1 and 4) implements a fourth method by executing the program computer PG3.
- the users UR1 and UR2 respectively using the client terminals T1 and T2 wish to communicate together, at least by audio, during an audio and/or video conference.
- the client terminals T1 and T2 each establish a communication session in cooperation with the conference server SV1 managing exchanges of audio data streams between the first client terminal T1 and the second client terminal T2.
- the first client terminal T 1 tests the audio reception of a single second client terminal T2, although other examples are possible where the audio reception of at least two second client terminals T2 is tested.
- each second client terminal executes the second method in the same way as the second client terminal T2.
- a unique identifier ID is assigned to each client terminal participating in the audio and/or video conference.
- the first and second client terminals respectively obtain their respective identifiers ID1 and ID2.
- the manner in which these terminals obtain their unique identifier may vary depending on the case. According to a particular example, it is the conference server SV1 which transmits to the client terminals T1 and T2 their respective identifier. According to another example, it is the users UR1 and UR2 who respectively define the identifiers ID1 and ID2 (or these are defined by default by their client terminal).
- the first client terminal T1 can obtain (B4, FIG. 5) the audio data stream marked FX1 in various ways depending on the implementation considered.
- the first client terminal T1 sends (B42, FIG. 6) to the mediation server SV2 a digital marking code request RQ1 (or code request request), this request RQ1 comprising the identifier ID1 of the first client terminal T1.
- the mediation server SV2 receives this request RQ1 during a reception step D42.
- the mediation server SV2 then obtains (D44) a digital marking code WT1 assigned to the first client terminal T1. To do this, the mediation server SV2 can determine or generate the digital marking code WT 1 in any suitable way. This marking code WT 1 can take various forms and can for example be a series of bits. The mediation server SV2 then sends (D46) the digital marking code WT 1 to the first client terminal T 1. In response to the request RQ1, the first client terminal T1 thus receives at B46 the digital marking code WT 1 assigned to it. According to a particular example, a distinct digital marking code WT is assigned by the mediation server SV2 to each second client terminal T2-T4.
- the mediation server SV2 records, in marking data DM, the digital marking code WT1 in association with the identifier ID1 of the first client terminal T1. It should be noted that this recording step D48 can be carried out at various times, for example before or after the sending step D46, or even before the step D4 of receiving the request RQ1 (in the latter case, the server mediator SV2 defined the ID1/WT 1 association before receiving the RQ1 request).
- the first client terminal T1 determines, during the establishment S2 of the communication session (or at least before the sending B42 of the request RQ1), an identifier IDC of the audio conference.
- the first client terminal T1 can then insert into the request RQ1 this identifier IDC of the audio and/or video conference before sending B42 to the mediation server SV2, so as to allow, for example, the mediation server SV2 to record the code digital marking WT 1 in association with the identifier ID1 of the first client terminal T 1 and the identifier IDC of the audio and/or video conference.
- the conference identifier IDC allows the mediation server SV2 to recognize the requests associated with the audio and/or video conference in progress, to generate a unique digital marking code WT for at least one client terminal (or even for each of among themselves) participating in said conference.
- the mediation server SV2 can for example supervise the audio stream reception test for a plurality of distinct audio and/or video conferences, including when the first client terminal T1 participates in several conferences simultaneously or successively over a given period. .
- the mediation server SV2 performs steps D44, D46 and D48 without this being requested by the first client terminal T1, that is to say independently of any request RQ1 sent by the first client terminal T 1.
- the first client terminal T1 can obtain the audio data stream marked FX1 in various ways.
- the first client terminal T1 generates or determines (B50) a stream of audio data marked FX1 by integrating (or inserting) by digital watermarking the digital marking code WT 1 into a first stream of audio data FXO which serves as the carrier stream.
- This first audio data stream FXO can be a test audio data stream, that is to say a stream whose audio data is intended solely to test the audio reception of the second client terminal T2 and which is not intended to be returned by the second client terminal T2 to its user UR2.
- the first client terminal T 1 generates the first audio data stream FXO by emulating random noise. In this example, this emulation can be performed while the microphone MIC1 of the first client terminal T 1 is deactivated. It is thus possible to produce a carrier signal for the digital marking code WT 1 , even if no acoustic signal is acquired by the microphone MIC1 (for example when a mute or “mute” function is activated).
- the first client terminal T 1 generates the first audio data stream FXO from useful audio data, that is to say from audio data transmitted by the first client terminal T1 during the conference audio and/or video and intended to be returned by the second client terminal T2 to the user UR2.
- the first audio data stream FXO can for example be generated from acoustic signals (or sounds) acquired by the first microphone MIC1 coupled to the first client terminal T1.
- This variant makes it possible to test the audio reception of the second client terminal T2 while the first client terminal T1 is picking up sounds (for example while the user UR1 is speaking during the audio and/or video conference ).
- the acoustic signals from which the first audio data stream FXO is generated represent (or result from) background noise acquired by the first microphone MIC1, the intensity of this background noise being less than a first intensity value 11.
- the audio data stream marked FX1 can then be generated at B50 from this background noise, for example when the user UR1 of the first client terminal T1 is not speaking.
- This value 11 can be adapted by those skilled in the art as appropriate.
- the first client terminal T1 triggers the sending B40 of the digital marking code request RQ1 on detection, by means of its microphone MIC1, of a period of silence of a duration at least equal to a first duration D1, during which a background noise of an intensity lower than said first intensity value I1 is detected.
- a period of silence is for example detected when a mute function (called “mute”) is activated, this function having the effect of deactivating the microphone MIC1 (blocking of acoustic acquisition).
- mute mute function
- This variant can help save processing and network resources by performing an audio reception test only to predict the ability or inability of the second client terminal T2 to receive an audio data stream even before the first client terminal T1 n transmit an audio data stream.
- the first client terminal T1 then sends the audio data stream marked FX1 to the conference server SV1.
- this sending B52 causes the conference server SV1 to send, to the second client terminal T2, a stream of audio data marked FX2 comprising the stream of audio data marked FX1.
- the conference server SV1 receives the audio data stream marked FX1 during a reception step A52.
- the first client terminal T1 also sends in B53 a notification NF2 informing of the sending B52 of the audio data stream marked FX1 to the conference server SV1 to carry out an audio test.
- This notification NF2 which may include the identifier ID1 of the first client terminal T1
- the reception D53 of the notification NF2 can mark, if necessary, a reference instant t0 subsequently used by the mediation server SV2 during the fourth method.
- the conference server SV1 then carries out processing (A54) from the audio data stream marked FX1 received at A52, and possibly from at least one other audio data stream FX transmitted by a client terminal other than the first client terminal T1, so as to produce a stream of audio data marked FX2 comprising the digital marking code WT1.
- the conference server SV1 decodes each audio data stream received (including the stream FX1), mixes or combines the decoded audio data and encodes the mixed audio data so as to obtain an audio data stream marked FX2 including the numeric marking code WT1.
- the mediation server SV1 sends the audio data stream marked FX2 to the second client terminal T2.
- the second client terminal T2 receives the audio data stream marked FX2 at C56 and detects in this stream FX2 the digital marking code WT1 at C58, identically respectively to the steps C8 and C10 previously described (FIG. 5).
- the second client terminal T2 can reproduce the audio data stream marked FX2 in acoustic form by means in this example of the loudspeaker HP2, although variants are possible without such sound reproduction. If the second client terminal T2 generates acoustic signals from the audio stream FX2, then the digital marking code WT2 may not be perceptible for the user UR2 (the WT2 code is not converted into sound), so that it does not interfere with listening during the conference.
- the second client terminal T2 sends (identically to sending C12, FIG. 5) a notification NF1 indicating that the second client terminal T2 has detected the digital marking code WT1, this notification NF1 comprising the digital marking code WT1 in association with the identifier ID2 of the second client terminal T2.
- the mediation server SV2 receives the notification NF1 during a reception step D62.
- the mediation server SV2 determines (D64) whether it has received a notification NF1 indicating that the second client terminal T2 has detected the digital marking code WT1. As already described, the mediation server SV2 can for this purpose consult its marking data DM and determine in D64 if the notification NF1 received includes the digital marking code WT1 associated with the identifier ID1 of the first client terminal T1 in the data of DM marking. The second client terminal T2 therefore does not need to know which other client terminal is associated with the digital marking code WT1.
- the mediation server SV2 uses a reference time t0 to determine at D64 whether said notification NF1 is received within a first time period DL1 from this reference time t0.
- This reference instant tO can, for example, correspond to the reception D53 of the notification NF2 sent, if necessary, by the first client terminal T1 to warn that an audio test is being carried out. It is thus possible for the mediation server SV2 to be informed when (for example each time) that the first client terminal T1 performs an audio test. Multiple audio tests can thus be carried out over time by the first client terminal T1 to test whether the user UR1 is, or will be, of course heard by the second client terminal T2.
- the mediation server SV2 is configured to know in advance a reference instant t0 during which the first client terminal T1 carries out the sending B52 of the audio data stream marked FX1. According to a variant, the mediation server SV2 uses as reference time t0 a time during which any one of the steps D42, D44, D46 and D48 is performed.
- the mediation server SV2 thus determines that the result of the determination D64 is positive if it detects that the notification NF1 emitted by the second client terminal T2 is received before the expiry of a first delay DL1 from this reference instant t0. Otherwise, the mediation server SV2 determines that the result of the determination D64 is negative.
- the mediation server SV2 can then determine (D66), from a result of the determination D64, audio capacity data DTA2 indicating whether the second client terminal T2 is capable of receiving an audio data stream FX originating from the first client terminal T1. More specifically, if the result of the determination D64 is positive, the fourth method continues at step D66a, otherwise the fourth method continues at step D66b.
- step D66a the mediation server SV2 determines, from the positive result of the determination D64, audio capacity data DTA2 indicating that the second client terminal T2 is able to receive an audio data stream coming from the first customer terminal T 1.
- step D66b the mediation server SV2 determines, from the negative result of the determination D64, audio capacity data DTA2 indicating that the second client terminal T2 is not able to receive an audio data stream in from the first client terminal T 1.
- the mediation server SV2 then sends (D68) the audio capacity data DTA2 to the first client terminal T1 as already described with reference to step D18 (FIG. 5).
- the first client terminal T 1 thus receives at B68 the audio capacity data DTA2 sent by the mediation server SV2.
- the first client terminal T1 can then perform steps D22 and D24 identically to steps B20 and B22 as previously described with reference to Figure 5.
- the mediation server SV2 can also send (D70) the audio capacity data DTA2 to the second terminal T2 to indicate to it that its audio reception test from the client terminal T1 to the second client terminal T2 has failed.
- the second client terminal T2 then receives the audio capability data DTA2 during a reception step C70.
- the second client terminal T2 can thus perform at least one management action, such as for example restoring (C72a) by means of its user interface IU2 information IF2 indicating the failure of the reception test audio and/or modify (C72b) an audio configuration of the second client terminal T2 with a view, if possible, to resolving the audio reception problem.
- This change of audio configuration can for example comprise a reconfiguration of any audio equipment of the second client terminal T2.
- a change of audio configuration can include for example a change of an audio input used by the second terminal T2 to receive audio data streams during the audio and/or video conference.
- the mediation server SV2 executes the fourth method according to steps D2-D18 (FIG. 5) or D42-D70 (FIG. 6) for a plurality of second client terminals, for example in cooperation with each of the terminals T2 , T3 and T4, so as to send in D68 to the first client terminal T1 audio capacity data DTA2, DTA3 and DTA4 respectively characterizing the second client terminals T2, T3 and T4.
- the mediation server SV2 can generate, and transmit at D68 to the first client terminal T 1 , an audio capacity matrix indicating for each second client terminal T2-T4 whether it has detected the digital marking code WT 1 and therefore if it is capable of receiving an audio data stream FX transmitted by the first client terminal T 1 during the audio and/or video conference.
- the first client terminal T1 can thus perform step B22 (FIGS. 5-6) by taking into account the audio capacity data DTA2, DTA3 and DTA4.
- the first client terminal T1 can restore information IF1 indicating whether at least one (for example each) of the second client terminals T2, T3 and T4 is capable of receiving an audio data stream emitted by the first client terminal T 1 during of the current audio and/or video conference.
- the user UR1 can easily know if he is, or will be, heard by each of the participants in the audio and/or video conference.
- the invention makes it possible to test the ability of one or more second client terminals to receive an audio data stream transmitted by the first client terminal during an audio and/or video conference. The invention therefore makes it possible to limit the risks of the user UR1 speaking without being heard by another participant in the audio and/or video conference.
- the second client terminal T2 is actually capable of receiving an audio data stream FX transmitted by the first client terminal T 1 , problems related to the acoustic equipment of the first client terminal and/or of the second client terminal may cause obstacle in the audio communications transmission chain from the microphone MIC1 of the first client terminal T 1 to the loudspeaker HP2 of the second client terminal T2.
- the user UR1 does not have the guarantee that the user UR2 can or will be able to hear it even if the second client terminal T2 is capable of receiving an audio data stream emitted by the first client terminal T 1.
- the invention may also comprise an acoustic test of at least one of the first client terminal T1 and the second client terminal(s) T2-T4, in order to complete the audio capacity data DTA2 generated by the mediation server SV2 (steps D16 and D66, Figures 5-6) with acoustic capacity data DTB.
- the first client terminal T1 performs an acoustic test of the microphone MIC1 to which it is coupled (and more generally a test of the acoustic equipment of the first client terminal T1), by performing steps B80-B88 at course of the first method as described with reference to steps B2-B24 (FIG. 5) or steps B40-B68 (FIG. 6).
- This test more generally makes it possible to test the entire acoustic chain (including the loudspeaker HP1 and the microphone MIC1) of the first client terminal T 1 .
- the first client terminal T 1 activates (B80) its microphone MIC1 if it is not already active, and can optionally deactivate (B82) an echo cancellation function F1 in the case where such a function is active.
- An echo cancellation function is in fact likely to hinder the smooth running of the acoustic test of the microphone MIC1.
- the cancellation, where appropriate, of an echo cancellation function F1 allows good acoustic acquisition by the microphone MIC1 of an acoustic emission (or output) from the loudspeaker HP1 coupled to the first client terminal T 1 .
- the first client terminal T1 generates an acoustic test signal denoted SA1 (FIG. 1) by means of the loudspeaker HP1.
- SA1 acoustic test signal denoted SA1 (FIG. 1) by means of the loudspeaker HP1.
- the first client terminal T1 can supply at the input of the loudspeaker any test audio data stream, so as to produce an acoustic test signal SA1 at the output of the
- the acoustic test signal SA1 is preferably a signal (sound emission) inaudible to the human ear (for example at high frequencies) so as not to disturb the user UR1 during the audible and/or video conference, but can possibly be an audible signal.
- the test acoustic signal SA1 is emitted at a frequency of at least 20 KHz. It can be a single-frequency signal or a sinusoidal signal, although other implementations are possible.
- the acoustic test signal SA1 thus generated has a sampling frequency of at least 44.1 KHz.
- the acoustic test signal SA1 is also emitted preferably for a short time (for example for a maximum duration of 250 ms), in order to avoid possibly disturbing the user UR1 and so as to save resources and speed up as much as possible. the acoustic test process while ensuring that this acoustic test signal SA1 is detectable by the microphone MIC1.
- the first client terminal T1 makes an acoustic acquisition by means of the microphone MIC1 while the loudspeaker HP1 emits the acoustic test signal SA1, so as to attempt to capture this acoustic test signal SA1.
- the first client terminal T 1 determines (B88), from a result of the acoustic acquisition B86, acoustic capacity data DTB1 characterizing the acoustic capacities of the microphone MIC1 (and more generally of the acoustic equipment of the first terminal customer T1).
- the first client terminal T1 acquires in B86 a test audio data stream DA1 produced by the microphone MIC1 from an acoustic signal picked up by said microphone.
- the first client terminal T 1 analyzes (B86), from the test audio data stream DA1 , an acoustic signal picked up by the microphone MIC1.
- the first client terminal T1 can in particular compare the acoustic signal picked up on the one hand, with the test acoustic signal SA1 generated in B84 on the other hand. Based on a result of this comparison, the first client terminal T 1 evaluates whether there is correspondence between the acoustic signal picked up and the acoustic test signal SA1.
- the acoustic capacitance data DTB1 can then be a function of a degree of correspondence between these two signals. If there is a match, this means that the microphone MIC1 (and more generally the acoustic equipment of the first client terminal T1) is functional. Otherwise, this means that the microphone MIC1 is likely to be defective, or at least that the acoustic equipment of the first client terminal T1 is not functional.
- the first client terminal T1 can thus carry out the management step B22 (FIGS. 5-6) also according to the acoustic capacity data DTB1 obtained in B88.
- the information IF1 restored if necessary by the first client terminal T1 during the restoration step B24 can be representative not only of the audio capacity data DTA2 received but also of the acoustic capacity data DTB1 of the first client terminal T 1.
- the first client terminal T1 can transmit to the mediation server SV2 the acoustic capacity data DTB1 obtained in B88.
- the mediation server SV2 can then also transmit these acoustic capacity data DTB1 to the second client terminal T2, or more generally to each second client terminal T2-T4.
- the acoustic test (B80-B88, FIG. 7) can be carried out at various stages of the first method implemented by the first client terminal T1 (FIGS. 5-6).
- the first client terminal T1 triggers this acoustic test on detection of the reception B2 (FIG. 5) or B46 (FIG. 6) of the digital marking code WT1 transmitted by the mediation server SV2, or at least before the step B4 for obtaining (FIG. 5) or step B50 for generating (FIG. 6) the audio data stream marked FX1.
- the terminal T1 can reactivate the echo cancellation function F1 if necessary, in order to avoid possible disturbances of the acoustic acquisition of the microphone MIC1 during the conference. audio and/or video.
- the first client terminal T1 is for example configured to trigger the sending B6 or B52 of the audio data stream marked FX1 only if the acoustic test B80-B88 is passed successfully, that is to say if it indicates that the microphone MIC1 is functional. Thus, if the acoustic test of the microphone MIC1 of the first client terminal T1 fails, the latter does not continue the audio test, or possibly selects the random noise emulation technique as described previously to generate in B50 (FIG. 6) the audio data stream marked FX1.
- the first client terminal T1 carries out an acoustic test of the loudspeaker HP2 to which it is coupled (and more generally a test of the acoustic equipment of the second client terminal T2), by performing steps C100- C108 during the second process as described with reference to steps C8-C12 (FIG. 5) or to steps C40-C72 (FIG. 6).
- This acoustic test C100-C108 is performed analogously to the acoustic test B80-B88 of the first client terminal T1 as described above. This test more generally makes it possible to test the entire acoustic chain (including the loudspeaker HP2 and the microphone MIC2) of the second client terminal T2.
- the second client terminal T2 activates (C100) its microphone MIC2 if it is not already active, and can optionally deactivate (C102) an echo cancellation function F2 in the case where such a function is active .
- An echo cancellation function is in fact liable to hinder the smooth running of the acoustic test of the loudspeaker HP2.
- the cancellation, where appropriate, of an echo cancellation function F2 allows good acoustic acquisition by the microphone MIC2 of an acoustic emission (or output) from the loudspeaker HP2 coupled to the second client terminal T2.
- the second client terminal T2 generates an acoustic test signal denoted SA2 (FIG. 1) by means of the loudspeaker HP2.
- SA2 acoustic test signal denoted SA2 (FIG. 1) by means of the loudspeaker HP2.
- the second client terminal T2 can supply at the input of the loudspeaker HP2 any test audio data stream, so as to produce an acoustic test signal SA2 at
- the acoustic test signal SA2 is preferably a signal inaudible to the human ear (for example at high frequencies) so as not to disturb the user UR2 during the audible and/or video conference, but may optionally be a signal audible.
- the test acoustic signal SA2 is emitted at a frequency of at least 20 KHz. It can be a single-frequency signal or a sine wave, although other implementations are possible.
- the acoustic test signal SA2 thus generated has a sampling frequency of at least 44.1 KHz.
- the acoustic test signal SA2 is also emitted preferably for a short time (for example for a maximum duration of 250 ms), in order to avoid possibly disturbing the user UR1 and so as to save resources and speed up as much as possible. the acoustic test process, while ensuring that this acoustic test signal SA2 is detectable by the microphone MIC2.
- the second client terminal T2 makes an acoustic acquisition by means of the microphone MIC2 while the loudspeaker HP2 emits the test acoustic signal SA2, so as to attempt to pick up this acoustic signal from SA2 test.
- the second client terminal T2 determines (C108), from a result of the acoustic acquisition C106, acoustic capacity data DTB2 characterizing the acoustic capacities of the loudspeaker HP2 (and more generally of the acoustic equipment of the second customer terminal T2).
- the second client terminal T2 acquires at C106 a test audio data stream DA2 produced by the microphone MIC2 from an acoustic signal picked up by said microphone.
- the second client terminal T2 analyzes (C106), from the test audio data stream DA2, an acoustic signal picked up by the microphone MIC2.
- the second client terminal T2 can in particular compare the acoustic signal picked up on the one hand, with the test acoustic signal SA2 generated in C104 on the other hand. Based on a result of this comparison, the second client terminal T2 evaluates whether there is correspondence between the acoustic signal picked up and the acoustic test signal SA2.
- the DTB2 acoustic capacity data can then be a function of a degree of correspondence between these two signals. If there is a match, this means that the loudspeaker HP2 (and more generally the acoustic equipment of the first client terminal T1) is functional. Otherwise, this means that the loudspeaker HP2 is likely to be defective, or at least that the acoustic equipment of the second client terminal T2 is not functional.
- the second client terminal T1 can transmit to the mediation server SV2 the acoustic capacity data DTB2 obtained in C108.
- the mediation server SV2 can then also transmit these acoustic capacity data DTB1 to the first client terminal T1, or more generally to each other client terminal T1, T3 and T4 participating in the audio and/or video conference.
- the first client terminal T1 can thus carry out the management step B22 (FIGS. 5-6) also according to the acoustic capacity data DTB2 received from the mediation server SV2.
- the information IF1 restored if necessary by the first client terminal T1 during the restoration step B24 can also be representative of the acoustic capacitance data DTB2 of the second client terminal T2.
- the acoustic test (C100-C108, FIG. 8) can be carried out at various stages of the second method implemented by the second client terminal T2 (FIGS. 5-6). Once the acoustic test of the second client terminal T2 has been completed, the terminal T2 can reactivate the echo cancellation function F2 if necessary, in order to avoid possible disturbances of the acoustic acquisition of the microphone MIC1 during the conference. audio and/or video.
- each client terminal participating in the audio and/or video conference can trigger an acoustic test of its own acoustic equipment (including its microphone and loudspeaker), for example during (or in response to) the establishment S2 (FIG. 6) of the communication session with the conference server SV1.
- each client terminal sends to the mediation server SV2 acoustic capacity data DTB representative of its own acoustic capacities.
- the acoustic capacity data obtained by each client terminal can thus be indicative of the capacity of said client terminal to: produce an acoustic emission (or output) by means of a microphone coupled to said client terminal, from an audio data stream received from the audio and/or video conference server SV1; and acoustically acquiring, by means of a loudspeaker coupled to said client terminal, an acoustic signal.
- all or part of the first method as described above with particular reference to FIGS. 5-6 can be repeated a plurality of times by the first client terminal T1.
- at least some of the steps B4-B22 (or even B2-B24) are repeated during the communication session, so as to check several times (for example periodically) whether said at least one second client terminal T2-T4 is capable of receiving an audio data stream FX transmitted by the first client terminal T1. It is thus possible to monitor over time the audio capacities of one or more second terminals T2-T4, in particular while the user UR1 of the client terminal T1 is speaking or while he is silent.
- the periodic or regular reiteration of the first method can in particular make it possible to continuously or repeatedly monitor the ability of one or more second terminals to receive an audio data stream transmitted by the first client terminal T 1 .
- the client terminal T1 uses at least two distinct digital marking codes WT1 to implement a plurality of iterations of the first method. Changing the digital marking code WT1 during several iterations of the first method can help ensure better robustness of the audio test (for example better security of the test process in the event of interception and use authorization of a digital marking code by a third party, the possibility of using several different types of marking code for more flexibility, etc.).
- the second client terminal T2 can in particular modify its audio configuration upon receipt of audio capacity data DTA2 indicating that said second client terminal T2 is not able to receive an audio data stream emitted by the first client terminal T 1.
- the first client terminal T 1 performs the following steps for each of a plurality of audio configurations, as long as a first audio condition is not satisfied: configuration of the first client terminal T 1 according to said audio configuration; and reiteration of at least part of the first method as previously described (steps B2-B24).
- the second client terminal T2 can in particular modify its audio configuration upon receipt of audio capacity data DTA2 indicating that said second client terminal T2 is not able to receive a data stream audio transmitted by the first client terminal T1.
- the second client terminal T2 performs the following steps for each of a plurality of audio configurations, as long as a second audio condition is not satisfied: configuration of the second client terminal T2 according to said audio configuration; and repeating at least part of steps C56-C72 of the second method (FIG. 6).
- the first and/or second client terminals can thus test each possible audio configuration until a positive audio test is obtained.
- each client terminal T1-T4 (acting as a first client terminal) can thus implement the first method as previously described with reference to FIGS. 5-8 so as to test the capacity of each other client terminal (acting as a second client terminal) to receive an audio data stream transmitted by said client terminal.
- the mediation server SV2 can for example generate a capacity matrix comprising audio capacity data DTA associated with each client terminal, these data indicating whether an audio stream emitted by said client terminal is able to be received by each other client terminal.
- This capacity matrix may optionally also include acoustic capacity data DTB characterizing the acoustic capacities of each client terminal. In other words, this capacity matrix can be obtained by completing the audio capacity matrix previously described with the DTB acoustic capacity data of the client terminals.
- the mediation server SV2 can also transmit this capacity matrix to at least one (for example each) client terminal T1-T4 so that the latter manages the audio and/or video conference by adapting its operation accordingly.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Telephonic Communication Services (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2106700A FR3124675A1 (fr) | 2021-06-23 | 2021-06-23 | Gestion d’une audioconférence audio et/ou vidéo |
| PCT/FR2022/051191 WO2022269181A1 (fr) | 2021-06-23 | 2022-06-20 | Gestion d'une audioconference audio et/ou video |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4360298A1 true EP4360298A1 (fr) | 2024-05-01 |
Family
ID=76807901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22737648.0A Pending EP4360298A1 (fr) | 2021-06-23 | 2022-06-20 | Gestion d'une audioconference audio et/ou video |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240297937A1 (fr) |
| EP (1) | EP4360298A1 (fr) |
| FR (1) | FR3124675A1 (fr) |
| WO (1) | WO2022269181A1 (fr) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2247082B1 (fr) * | 2009-04-30 | 2013-11-20 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Dispositif de télécommunication, système de télécommunication et procédé de télécommunication de signaux vocaux |
| US8351589B2 (en) * | 2009-06-16 | 2013-01-08 | Microsoft Corporation | Spatial audio for audio conferencing |
| US8407287B2 (en) * | 2009-07-14 | 2013-03-26 | Radvision Ltd. | Systems, methods, and media for identifying and associating user devices with media cues |
| US9659571B2 (en) * | 2011-05-11 | 2017-05-23 | Robert Bosch Gmbh | System and method for emitting and especially controlling an audio signal in an environment using an objective intelligibility measure |
| US10291495B2 (en) * | 2016-08-11 | 2019-05-14 | Thales Avionics, Inc. | Analyzing passenger connectivity experiences while using vehicle cabin networks |
| US10462536B2 (en) * | 2017-06-16 | 2019-10-29 | M/S. Amagi Media Labs Pvt. Ltd | System for low-latency detection of known audio video content using audio fingerprinting and audio watermarking |
| US10811018B2 (en) * | 2018-12-04 | 2020-10-20 | Saudi Arabian Oil Company | System and method for using a unidirectional watermark for information leak identification |
| CN113516991B (zh) * | 2020-08-18 | 2026-04-03 | 腾讯科技(深圳)有限公司 | 基于群组会话的音频播放、设备管理方法及装置 |
-
2021
- 2021-06-23 FR FR2106700A patent/FR3124675A1/fr not_active Ceased
-
2022
- 2022-06-20 WO PCT/FR2022/051191 patent/WO2022269181A1/fr not_active Ceased
- 2022-06-20 EP EP22737648.0A patent/EP4360298A1/fr active Pending
- 2022-06-20 US US18/571,955 patent/US20240297937A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3124675A1 (fr) | 2022-12-30 |
| WO2022269181A1 (fr) | 2022-12-29 |
| US20240297937A1 (en) | 2024-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1649677B1 (fr) | Procedes et dispositifs d'evaluation de delais de transmission et de traitement d'un signal de parole recu dans un terminal relie a un reseau de paquets | |
| US11095997B2 (en) | Undesirable noise detection and management | |
| FR2995122A1 (fr) | Dispositif et procede pour fournir un signal audio de reference a une unite de traitement acoustique | |
| US20250080644A1 (en) | Authenticating A Call Recording Using Audio Scores | |
| US11488612B2 (en) | Audio fingerprinting for meeting services | |
| US11417340B2 (en) | Fault detection and management in a real-time communication | |
| EP2882161A1 (fr) | Procédé et dispositf d' établissement d'une communication | |
| EP4360298A1 (fr) | Gestion d'une audioconference audio et/ou video | |
| US12542821B2 (en) | Call quality analysis, notification and improvement | |
| EP1859600B1 (fr) | Procédé amélioré de transmission de données et d'informations de service qui leur sont associeés | |
| EP2273759B1 (fr) | Réplication optimisée dans un réseau pair-à-pair | |
| EP1985093A1 (fr) | Procédé et dispositif de gestion d'au moins un groupe d'utilisateurs, produit programme d'ordinateur correspondant | |
| EP3809154B1 (fr) | Procede de regroupement d'equipements par espaces sonores | |
| WO2008035009A1 (fr) | Procede de communication entre plusieurs terminaux | |
| EP4016279B1 (fr) | Procede de vote et dispositif mettant en oeuvre ledit procede | |
| EP4016938B1 (fr) | Procédé de synchronisation et système mettant en oeuvre ledit procédé | |
| CA3217956A1 (fr) | Procede de traitement de flux de donnees d'une session de conference par un serveur de session | |
| CN115914673A (zh) | 一种基于流媒体服务的合规检测方法及装置 | |
| FR3101725A1 (fr) | Procédé de détection de la position de participants à une réunion à l’aide des terminaux personnels des participants, programme d’ordinateur correspondant. | |
| WO2017103480A1 (fr) | Système et procédé de réalisation d'un tour de table lors d'une réunion à distance | |
| EP2351342A1 (fr) | Qualite de transmission dans un systeme de communication | |
| WO2007028533A1 (fr) | Procédé de transmission d'informations à pérennité améliorée | |
| EP4546174A1 (fr) | Procede d'obtention d'un modele d'identification, programme d'ordinateur et procede d'identification associes | |
| WO2025003195A1 (fr) | Classification d'un jeu de données multi-activités dans un réseau de télécommunications | |
| EP4016280A1 (fr) | Procede de lecture synchronisee par des dispositifs de reproduction contrôles par un contrôleur, dispositif de reproduction et contrôleur mettant en uvre ledit procede |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20240116 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20251218 |