ISO/IEC 14496-5:2001/Amd 10:2007

Overview

ISO/IEC 14496-5:2001/Amd 10:2007 is an important amendment to the international standard for coding audio-visual objects, focusing specifically on reference software implementations. This amendment extends Part 5 of the MPEG-4 system standard by including reference software for advanced audio coding technologies such as SSC, DST, ALS, and SLS. Developed by the ISO/IEC Joint Technical Committee JTC 1, Subcommittee SC 29, this update supports the enhancement of audio coding standards, ensuring consistent, interoperable implementations for high-quality audio compression and lossless coding.

Key Topics

• Reference Software for Audio Coding
  Amendment 10 introduces reference encoder and decoder software for four key audio coding technologies:

  • SSC (Parametric Coding of High Quality Audio): Provides efficient compression of high-fidelity audio by using parametric representation.
  • DST (Lossless Coding of Oversampled Audio): Supports lossless compression of oversampled audio signals, maintaining exact audio reproduction.
  • ALS (Audio Lossless Coding): Enables truly lossless audio compression preserving original quality.
  • SLS (Scalable Lossless Coding): Combines scalable and lossless coding techniques for flexible audio streaming and storage.

• Integration in Audio Software Archives
  The amendment includes updates to audio decoder and encoder directories within the MPEG-4 reference software archive. The SSC software is integrated into the mp4AudVm directory, while DST, ALS, and SLS have dedicated directories, ensuring clear organization for developers and implementers.

• Consistency with ISO/IEC 14496-3
  These reference implementations correspond directly to subparts 8, 10, 11, and 12 of ISO/IEC 14496-3, the audio coding standard of the MPEG-4 suite, promoting alignment across both parts of the MPEG-4 standards.

Applications

The reference software provided in ISO/IEC 14496-5:2001/Amd 10:2007 plays a critical role for organizations and professionals involved in:

• Audio Codec Development
  Developers use this reference software as a normative implementation to create, test, and verify new audio codecs compatible with the MPEG-4 standards.
• High-Fidelity Audio Streaming and Storage
  Streaming services, broadcasters, and archiving institutions benefit from SSC, DST, ALS, and SLS technologies to provide high-quality audio with scalable or lossless compression.
• Research and Education in Audio Compression
  The standardized reference codebase supports academic research and technical training by offering a practical example of state-of-the-art audio compression algorithms.
• Multimedia Authoring and Playback Systems
  Integration of these reference codecs facilitates interoperability in multimedia authoring tools and playback devices that comply with ISO/IEC MPEG-4 audio specifications.

Related Standards

• ISO/IEC 14496-3 - Coding of audio: This standard specifies the detailed audio codec specifications, including parametric, lossless, and scalable coding techniques referenced by this amendment.
• ISO/IEC 14496-1 to 4 - MPEG-4 system and visual parts: Complementary parts addressing the broader audiovisual object coding and system architecture.
• ISO/IEC JTC 1/SC 29 - Oversight body responsible for multimedia coding standards, including MPEG audio/video standards.

For more information on the MPEG-4 audio reference software and implementations, visit the official ISO website at www.iso.org.

Keywords: ISO/IEC 14496-5 amendment 10, MPEG-4 reference software, SSC audio coding, DST lossless coding, ALS audio codec, SLS scalable audio coding, audio compression standards, MPEG-4 audio encoder, ISO audio reference software, high-quality audio coding.