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MPEG-1 Layer II Audio Codec
MPEG-1 Layer II (MP2) optimized for NXP Nexperia™ media processors

The fully ISO-compliant Streaming Networks MPEG1 Layer-I & II software audio codec brings high-performance audio encoding and decoding to embedded systems that require a low memory footprint. Optimized for use with the NXP Nexperia family of media processors (with TriMedia VLIW processor cores), the software codec is flexible, scalable, cost-effective, and easy-to-use. It can be used in time-shift applications where encoding and decoding of MPEG1 audio and video executes on a single Nexperia processor. Low frequency noise also makes the codec an excellent choice for security and surveillance applications. This codec delivers CD-quality music with performance near MP3 codec at equal bitrates. The codec can burn audio CDs four times faster than real time. The encoder converts standard analog audio signals into digital format, compressing it in real time. The result is an audio elementary stream ready for independent use or for multiplexing with video.

Well-documented, easy-to-use application programming interface (API) is included with the codec. The API lets developers control library behavior and provide all the functionality for audio capture, encoding/decoding, and rendering

 

Specification:  
 
  • Audio input type
    • Accepts “16-bit Linear PCM” format from live source or file
  • Output bit-stream
    • MPEG1 Layer-I & II ISO/IEC 11172-3
  • Supports Layer-I and Layer-II formats
  • Channels
    • Mono, Stereo
  • Bit rates per channel
    • Mono: 32, 48, 56, 64, 80, 96, 112, 128, 160, 192 Kbps
    • Stereo: 64, 96, 112, 128, 160, 192, 224, 256, 320, 384 Kbps
  • Sample rates
    • 32, 44.1, 48 KHz
  • Near CD-quality music
  • Burns audio CDs at 4x real time
 
 
 
 

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