SGS-Thomson DSP D950-core audio compression

Dolby Laboratories provides a detailed flow of operation of the Composite multichannel audio compression algorithm, from receiving a frame in the input data buffer all the way to outputting PCM audio signals, in the form of a C-like floating-point pseudocode. This pseudocode helps the licensees in understanding the details in implementing a real-time AC-3 decoder. A set of bitstreams or test vectors are designed to exercise different aspects of the AC-3 algorithm and are used for design verification. This paper describes how these tools were used in order to implement the AC-3 decoder algorithm on a DSP-core.