Q multi-codec audio transcoding engine

Aspex Q uses a dedicated software programmable Audio DSP unit to couple extremely flexible audio transcoding capability to the video compression engine. The core software programmability allows for multiple audio codecs to be implemented on-chip. Implemented audio codecs include:

• AAC and AACPlus
• MP3
• MPEG-1 Layer-2
• Dolby AC-3
• DTS
• WMA
• PCM
  
  
• more can be custom programmed on the DSP and SSP cores

Aspex Q Audio DSP offers support for up to 8 channels of audio (4 stereo pairs or 7.1 surround) and audio sampling rates of 44.1Khz, 48Khz and 96KHz.

The 24-bit audio processing unit delivers further audio processing capability such as:

• Source selection
• Delay compensation
• 8-way audio mixing
• gain and balance adjustment
• audio sample counter (synchronisation)
• delay compensation
• PTS/DTS insertion

The audio transcoding engine is coupled with the programmable System Stream Processor (SSP), which enables additional processing algorithms to be implemented, encapsulation into any container format and the application of standard or proprietory digital rights management algorithms (DRM).