Patent ID: 7469209
Filing Date: 2008-12-23
Classification: G10L

Abstract:
1. An apparatus for performing frame classification and rate determination in a transcoding process operating on a source bitstream coded in a source voice codec, the transcoding process being performed without reconstructing a voice signal, the apparatus comprising: a source bitstream unpacker associated with the source codec, the source bitstream unpacker being operative to generate one or more parameters, wherein the source bitstream unpacker comprises: a buffer coupled to the source bitstream unpacker and operative to store one or more frame classification and rate determination parameters; and a frame classification and rate determination module coupled to the source bitstream unpacker and the buffer, the frame classification and rate determination module being operative to output a frame class and a rate for the destination voice codec through the use of one or more parameters associated with the source bitstream coded in the source voice codec and free from the use of a voice signal.