| CPC G10L 19/008 (2013.01) [G10L 25/30 (2013.01)] | 12 Claims |

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1. An audio communication apparatus comprising
a set of two or more audio communication nodes;
each audio communication node comprising:
an audio encoder controlled by encoding parameters to generate encoded audio data to represent a vocal input generated by a user of that audio communication node, the encoded audio data being agnostic to the user that generated the vocal input; and
an audio decoder controlled by decoding parameters to generate a decoded audio signal as a reproduction of a vocal signal generated by a user of another audio communication node of the set of two or more audio communication nodes, the decoding parameters being specific to the user of the another audio communication node of the set of two or more audio communication nodes, wherein:
the audio encoder of each audio communication node of the set of two or more audio communication nodes is configured to include both a user identifier for indicating a user of that audio communication node and encoded audio data generated by that audio encoder in a given audio packet to be transmitted to another audio communication node of the set of two or more audio communication nodes,
the audio decoder of each audio communication node of the set of two or more audio communication nodes is configured to detect a user identifier in an audio packet including encoded audio data received from another audio communication node of the set of two or more audio communication nodes, and to select decoding parameters for decoding that encoded audio data included in the audio packet from two or more candidate decoding parameters associated with respective different users among a plurality of different users in dependence upon the detected user identifier, wherein the selected decoding parameters are stored in a parameter storage unit, which stores decoding parameters associated with the plurality of different users currently capable of sending audio communications to the audio communication apparatus.
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