Method and devices for evaluating transmission times and for procesing a vioce singnal received in a terminal connected to a packet network

摘要

A method of evaluating the processing delay of a speech signal contained in data packets received in a receiver terminal equipped with a telephony module during a voice call to a terminal sending said data packets over a packet-switched network. The method includes the step of obtaining (E 32 ) from the received data packets a stream of audio packets containing the speech signal. Within a predetermined decoding time, the stream of obtained audio packets is decoded (E 34 ) and a first reconstituted speech signal is created (F 1 ). At least a portion of the speech reconstituted by the telephony module is duplicated (E 36 ) to constitute a second speech signal (F 2 ). The delay difference between the first speech signal (F 1 ) and the second speech signal (F 2 ) is determined (E 39 ). The processing delay (D 3 ) of the speech signal in the receiver terminal is calculated (E 40 ) from at least the measured delay difference between said first speech signal (F 1 ) and said second speech signal (F 2 ) and the predetermined decoding time.