Technology - Audio-Visual Coding 2 - MPEG 2 AAC and Video

Synopsis

We discuss Advanced Audio Coding and how it improves on MP3. We explain enhancements to both AAC including Spectral Band Replication, Parametric Stereo and Scalable Lossless Coding. We discuss HILN parametric audio coding and voice compression algorithms including CELP. We also explain the process of MPEG-2 video compression, which is the basis of almost all digital television systems.

Table of Contents

  • 1. Synopsis
  • 2. Introduction
  • 3. MPEG-2 Transport Stream
  • 4. MPEG-2 audio compression
    • 4.1 5.1 channels
  • 5. MPEG-2/4 Advanced Audio Coding (AAC)
    • 5.1 MDCT block lengths
    • 5.2 Temporal Noise Shaping (TNS)
    • 5.3 Frequency domain prediction
    • 5.4 Perceptual Noise Substitution (PNS)
    • 5.5 Long Term Prediction (LTP)
    • 5.6 Low Complexity (AAC-LC)
    • 5.7 Scalable Sample Rate (AAC-SSR)
    • 5.8 Bit-Sliced Arithmetic Coding (AAC-BSAC)
    • 5.9 AAC advantages over MP3
    • 5.10 Low Delay AAC
    • 5.11 Error Resilient AAC
    • 5.12 HE-AAC – aacPlus
    • 5.13 Spectral Band Replication (SBR)
    • 5.14 Parametric Stereo
    • 5.15 Scalable Lossless Coding (SLS)
  • 6. MPEG-4 Parametric Audio Coding – HILN
    • 6.1 Speech compression
      • 6.1.1 Code-Excited Linear Predictive (CELP)
      • 6.1.2 Harmonic Vector Excitation Coding (HVXC)
  • 7. MPEG-2 video compression
    • 7.1 Chroma sub-sampling
    • 7.2 Motion compensation
    • 7.3 Discrete Cosine Transform (DCT)
    • 7.4 Variable bit rate
    • 7.5 Encoder – decoder compatibility
    • 7.6 Profiles and levels
      • 7.6.1 MainProfile@MainLevel (MP@ML)
      • 7.6.2 MainProfile@HighLevel (MP@HL)
      • 7.6.3 SNR Profile – Scalable for Hierarchical Broadcasting
      • 7.6.4 SpatialProfile@High-1440Level
  • 8. Related reports

Related Reports

Purchase this Report

US$50.00

Licence Information

Focus Report Profile

Technologies

Digital Media
Internet
Mobile & Wireless Broadband and Media
Mobile Communications (voice and infrastructure)

Number of pages 14

Status Archived

Last updated 14 Feb 2006
Update History

Analyst: Robin Whittle

Share this Report

Purchase with Confidence

I have both worked with Paul and valued his opinion on many occasions. Following, his many comments on the telecommunications industry has been rewarding and insightful. His reports have always been of value and help guide us through the maze of jargon, politics and defined the real road map of this complex industry.

David Hayes, Country Manager - Australia at Bulletin Wireless

Special Offers

Hong Kong - Telecoms, Mobile and Broadband - Statistics and Analyses
US$575.00 until 3 Oct 2018
(normal price US$1,150.00)

Indonesia - Telecoms, Mobile and Broadband - Statistics and Analyses
US$575.00 until 3 Oct 2018
(normal price US$1,150.00)

Sample Reports

A selection of downloadable samples from our Annual Publications catalogue.


Download a Sample Report

More than 4,000 customers from 140 countries utilise BuddeComm Research

Are you interested in BuddeComm's Custom Research Service?

News & Views

Have the latest telecommunications industry news delivered to your inbox by subscribing to Paul's FREE weekly News & Views.