A method for deriving of the active period in a speech decoder in the case of discontinuous transmission, as well as voice coder and transmitter - receiver

摘要

Method for detecting a period of active ingredients in a speech decoder (16) in a communication system, the discontinuous transmission between a transmitter and a receiver is used, wherein the discontinuous transmission of temporally successive periods, some of which no transmission, which is transferred to the frame and the other with:– By means of information transmission periods (200; 301; 302), the at least one frame, and contain information, such as those of a user is given to the transmitter device; and– Silence periods (208, 209; 303) with a length of at least one frame, the other piece of information is supplied by the user contain;– wherein an irregularly occurring period (t) of at least one frame, between an information transmission period (200) and the following silent period (208, 209) exists, the one according to active period for determining the information relating to the silent period forms;characterized by– Counting (411) of the number of frames until the moment in the receiver,– in the case of which the beginning of the silent period is detected; and..