MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
MAS3509F Datasheet PDF :
The MAS 35x9F is a single-chip, low-power MPEG layer 2/3 and MPEG2-AAC audio stereo decoder. It also contains the G.729 Annex A speech compression and decompression technology for use in memory based or broadcast applications. Additional functional ity is achievable via download software (e.g., CELP voice decoder, Micronas SC4 (ADPCM) encoder/decoder).