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MPEG-1 audio decoder software library module


  • The MPEG audio decoder accepts a stream of MPEG 1 layer 1 and layer 2 encoded audio at its input stream and generates a linear PCM format output stream. It is also able to handle the respective MPEG-2 bit streams. However, it decodes only the stereo channels of MPEG-2 streams. The decoder is capable of decoding all Layer 1and Layer 2 bit streams except for bit streams using the free data rate format. Such bit streams cause an error message. The decoder is also not performing de-emphasis. It, however, indicates if emphasis is applied to MPEG bit stream via the progress callback function when the appropriate flag is installed.


  • MPEG-1 layer 1 and layer 2 decoding
  • MPEG-2 stereo decoding
  • compatible with TriMedia Software Development Environment
  • supported by pSOS+ real-time operating system
  • can be demonstrated on TM-1300 IREF board


  • MPEG-1 audio decoding supports compressed stereo audio formats.