Wideband Speech and Audio Coding

Esin Darici Haritaoglu

• INTRODUCTION
• WIDEBAND SPEECH CODING
  • The CCITT G.722 Wideband Speech Coding Standard
    • Subjective Performance
  • Low-delay CELP coding of 7kHz speech at 32 kbit/s
    • Perceptual Noise Weighting
    • Subjective Performance
  • Other Wideband Speech Coding Techniques
• HUMAN AUDITORY MASKING and PERCEPTION BASED CODING
  • Simultaneous Masking
  • Temporal Masking
  • Perception Based Coding
• AUDIO CODING
  • ISO/MPEG Standardization
    • Operating Modes
    • Frequency Mapping
    • Quantization and Bit Allocation
    • Pre-Echo Control
    • ISO/MPEG Layers
• References
• About this document ...