Patent ID: 6580903
Filing Date: 2003-06-17
Classification: H04M

Abstract:
A circuit for recording and playing back voice and other sounds in digital mobile radio devices, comprising:a transmit signal path including a first voice encoder configured therein for encoding voice signals to be transmitted via a radio link; a receive signal path including a first voice decoder configured therein for decoding voice signals received via the radio link; a memory for storing voice signals and for outputting the voice signals; a second voice encoder having an output connected to said memory; a second voice decoder having an input connected to said memory for receiving the voice signals from said memory, said second voice decoder configured for decoding the voice signals and for sending the voice signals to a loudspeaker; said first voice decoder configured to always decode ones of the voice signals received via the radio link that are to be stored in said memory and to send the decoded ones of the voice signals to said second voice encoder for subsequent encoding; and a third voice decoder having an input connected to said memory for receiving the voice signals from said memory, said third voice decoder configured for decoding the voice signals from said memory and for sending the voice signals to the transmit signal path.