ROBUST SPEECH TRANSMISSION

摘要

In transmission of speech data from a mobile transmitter over an air interface at least two different parallel speech data frames from a stream of speech data are encoded. The transmitter selects one of the at least two speech data frames for transmission based on one or more pre-defined parameters. Hereby the transport layer will have the possibility to send the speech data frame using the encoding that has the best chance of arriving at the receiver without bit errors. As a result the speech quality is enhanced in poor radio conditions.