Digital Speech and Audio Coding

1. Introduction
Human speech production, Music production, Auditory perception, Brief overview on information theory and coding theory.
2. Applied Signal Processing
Brief overview on sampling and quantization, Discrete Fourier transform, Perfect reconstruction, Quadrature mirror filter, Modified discrete cosine transform, Stereo processing, Linear prediction (LP), Auditory filters, Auditory masking, Perceptual auditory models (Johnston's model, MPEG models), Spectral band replication, Temporal noise shaping.
3. Speech Coding
Scalar and Vector quantization, Lossless coding, Waveform and parametric coding, Vocoders, LP coders, Analysis by Synthesis and Code excited LP codec, Adaptive multi-rate (AMR).
4. Audio Coding and Emerging Trends
Perceptual audio coders, MPEG-1, MPEG-2, MPEG-4, Dolby AC, Sony, AMR-WB, Generic coding.
5. Evaluation and Standardization of Audio and Speech coders
Objective evaluation techniques (PESQ, PEAQ), Subjective evaluation techniques (MOS, MUSHRA, BS.1116), Standardization (ITU).
6. Laboratory Exercises
Auditory perception models, Auditory filters, Estimation of masking threshold, Simple perceptual waveform coder, Objective quality evaluation techniques.