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AAC Audio Codec
AAC audio codec optimized for NXP Nexperia™ media processors

Streaming Networks offers an ISO compliant AAC software audio Codec supporting encoding & decoding of both MPEG4 and MPEG2 formats. The AAC Codec library is targeted for embedded systems, requiring low memory footprints and is fully optimized for the TriMedia VLIW processor. The encoder and decoder libraries are available with the TriMedia streaming interface (TSSA).

Well-documented, easy to use application programming interface allow developers to control the behavior of the library. The sample demo provides functionality necessary to capture audio, encode it, decode it, and finally render it for listening.


  • Audio Input type
    • Accepts "Linear PCM" format from a live source or a file in 16 bit audio for mono and stereo.
  • Output bit-stream
    • MPEG4/MPEG2 AAC-LC ISO/IEC14496-3, ISO/IEC 13818-3 compliant.
  • Channels
    • Mono, Stereo and 5.1
  • Bit rates per channel
    • 8, 16, 32, 64, 128 kbps
  • Sample rates
    • 8, 16, 22.050, 32, 44.1, 48 kHz
  • Profile
    • Main
    • Low Complexity
  • Tools implemented
    • Filter Bank
    • Temporal Noise Shaping
    • Perceptual model
    • Rate Distortion control
    • Noiseless coding
    • Intensity Stereo and mid/side matrixing
    • Long Term Prediction

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