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Soft Audio Suite

Optimized Audio Algorithms for Digital Consumer Applications

The MIPS™ Soft Audio Suite is a comprehensive set of audio algorithms highly-tuned for MIPS32-Based™ processors commonly used in cost- sensitive consumer applications, ranging from digital cameras to high- definition television SOC designs.

Silicon vendors can quickly integrate the MIPS Soft Audio Suite into a MIPS-Based design to reduce time-to-market and lower overall system costs by eliminating the digital signal processor.

Low-Cost Solutions

  • SOC designers can employ a dedicated MIPS32® core for audio processing or subsume audio onto the MIPS32 host CPU. In either case, vendors will only need to support one development tool chain.
  • Customers can leverage the robust ecosystem of optimized software, development environments, IP and design tools that support the MIPS32 architecture.
  • A single audio code base for multiple consumer devices reduces engineering costs.

Quick Time-to-Market

  • Each audio algorithm is optimized for best performance on a MIPS32 processor.
  • Rigorous testing of decoders, and certification as necessary, ensure the highest quality.
  • Algorithms compile with GCC and run with MontaVista Linux and VxWorks.
  • Using the common API, future algorithms from MIPS Technologies can be easily incorporated into existing audio driver applications.

Maximize Product Opportunity

  • Algorithms can be reused across multiple high-volume consumer applications, ranging from battery-powered devices to home entertainment systems.
  • Algorithms support global standards, extending the reach of a single SOC design which can be tailored for multiple regions with the addition of appropriate algorithms:
    • Association of Radio Industries and Businesses (ARIB)
    • Advanced Television Systems Committee (ATSC)
    • Digital Video Broadcasting (DVB)

Applications for MIPS™ Soft Audio Suite Include:

  • Digital Cameras and Camcorders
  • High-Definition Television (HDTV)
  • Personal Video Recorder (PVR)
  • Digital Versatile Disc (DVD) Player and Recorder (DVD-Rec)
  • Set-Top Box (STB)
  • Home Theater-in-a-Box (HTIBs)
  • Media Center
  • Telematics

Algorithms

Algorithm (MIPS32®-optimized)NicknameSampling Rates (kHz)Bit Rates (kbps)Supported Input/Output Resoutions (bits)Internal Computation Precision (bits)Output Modes
Dolby® Digital DecoderAC-332, 44.1, 4832-64016, 24, 32322 Channel, Downmix, Multi-Channel (1-6)
Dolby® Digital Plus Decoder-ConverterE-AC-332, 44.1, 48, (and 88.2, 96 with sample rate conversion)32-614416, 20, 24, 32322 Channel, 5.1-Channel, Downmix, E-AC-3 to AC-3 Conversion
Dolby® Pro Logic® II Decoder32, 44.1, 48N/A16, 24, 32323, 4 and 5 Channels
MPEG-2 Layer I & II Audio Decoder - ISO/IEC 11172-3, ISO/IEC 13818-316, 32, 44.1, 22.05, 24, 48 Layer 1: 32-44816, 2432Mono, Stereo and Multi-Channel
Layer 2: 8-384
MPEG-1 Layer III Audio Decoder - ISO/IEC 11172-3MP332, 44.1, 48Layer 3: 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 32016, 2432Mono, Stereo and Multi-Channel
MPEG-2 AAC LC Audio Decoder - ISO/IEC 13818-7AAC8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48, 64, 88.2, 96Supports all AAC-defined bit-rates16, 2432Mono, Stereo and Multi-Channel
SRS TruSurround XT®32, 44.1, 48, 88.2, 96N/A16, 24, 32322 Channel


MIPS™ MPEG-1 and MPEG-2 Layer I & II Audio Decoder

The MPEG-2 audio decoder is fully compliant with the ISO/IEC 13818-3 specification. This decoder is backwards compatible with the MPEG-1 audio standard and supports multi-channel and multilingual features. MPEG-2 Layer I & II audio are used in various consumer devices such as high-definition TVs, DVD players and set-top boxes.

MIPS™ Pro Logic® II Decoder

The Pro Logic II decoder processes a two-channel input into a multi-channel output. It supports all the required sampling rates as well as various emulation modes, including Dolby Pro Logic. This product is certified by Dolby Laboratories.

MIPS™ MPEG-2 AAC Low Complexity Audio Decoder

The Advanced Audio Coding (AAC) algorithm is a very efficient, high-quality, low-bit-rate audio codec. The MIPS MPEG-2 AAC decoder conforms to the ISO/IEC 13818-7 specification. MPEG-2 AAC Low Complexity is the required audio standard in ARIB digital TV applications.

MIPS™ Dolby® Digital Decoder

The Dolby Digital decoder supports 2 channel, multi-channel and down-mix modes. The MIPS implementation of the Dolby Digital decoder supports all the specified sampling rates, bit rates, Annex D, Karaoke modes and required input/output channel configurations. This product is certified by Dolby Laboratories.

SRS TruSurround XT®

SRS TruSurround XT is a virtual audio solution that delivers a compelling, surround sound experience through any two-speaker playback system. The technology creates a stunning 3D sound image from stereo or multi-channel sources, with deep, rich bass enhancement and improved dialog intelligibility.


Deliverables

Audio Module Deliverables

The MIPS™ Soft Audio Suite includes all necessary components to quickly integrate software modules into a silicon solution.
  • Datasheet
  • Application Programmer Interface Guide
  • APWin Plots (where applicable)
  • Audio Standards Certification Letter (where applicable)
  • Audio Software
  • Release Notes
  • Integration Guide
  • Implementer's Guide