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Digital Voice and Picture Communication

Digital Voice and Picture Communication. Instructor: Prof. Somnath Sengupta, Department of Electronics and Communication Engineering, IIT Kharagpur. The course discusses topics in digital voice and picture communication: speech production model, speech coding: objectives and requirements, quantizers for speech signal, mu-law and optimum quantizer, adaptive quantizer, differential quantization, LDM and ADM, differential PCM and adaptive prediction, linear prediction of speech, computational aspects of LPC parameters, Cholesky decomposition, lattice formulation of LPC coefficient, linear predictive synthesizer, LPC vocoder, voice coding, theory of wavelets, discrete wavelet transforms, embedded zero tree wavelet encoding, motion estimation techniques, DCT quantization and limitations, H.323, MPEG-1 audio coding, video coding, video conferencing: SIP protocol, and 4G multimedia conferencing. (from nptel.ac.in)

Lecture 06 - Adaptive Quantizer

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Lecture 01 - Introduction

Lecture 02 - Speech Production Model

Lecture 03 - Speech Coding: Objectives and Requirements

Lecture 04 - Quantizers for Speech Signal

Lecture 05 - Mu-Law and Optimum Quantizer

Lecture 06 - Adaptive Quantizer

Lecture 07 - Differential Quantization

Lecture 08 - Linear Delta Modulation (LDM) and Adaptive Delta Modulation (ADM)

Lecture 09 - Differential PCM and Adaptive Prediction

Lecture 10 - Linear Prediction of Speech

Lecture 11 - Computational Aspects of LPC Parameters

Lecture 12 - Cholesky Decomposition and Durbin's Recursive Approach

Lecture 13 - Lattice Formulation of LPC Coefficient

Lecture 14 - Linear Predictive Synthesizer

Lecture 15 - LPC Vocoder

Lecture 16 - Introduction to Image and Video Coding

Lecture 17 - Lossy Image Compression: Discrete Cosine Transform (DCT)

Lecture 18 - DCT Quantization and Limitations

Lecture 19 - Theory of Wavelets

Lecture 20 - Discrete Wavelet Transforms and Multi-resolution Analysis

Lecture 21 - DWT on the Images and its Encoding

Lecture 22 - Embedded Zero Tree Wavelet Encoding

Lecture 23 - Video Coding: Basic Building Blocks

Lecture 24 - Motion Estimation Techniques

Lecture 25 - Fast Motion Estimation Techniques

Lecture 26 - Video Coding Standards: H.264

Lecture 27 - H.264: Advanced Coding Aspects

Lecture 28 - Audio Coding: Basic Concepts

Lecture 29 - Audio Coding: AC3

Lecture 30 - AC3 Decoder

Lecture 31 - MPEG-1 Audio Coding

Lecture 32 - Introduction to VoIP

Lecture 33 - VoIP Signaling: H.323 Protocol

Lecture 34 - H.323 Call Controls and Enhancements

Lecture 35 - H.323: Interworking with PSTN, Limitations and Solutions

Lecture 36 - H.323: Multiplexing Schemes

Lecture 37 - H.323: Multiplexing: Header Compression and BW Efficiency

Lecture 38 - ISDN Video Conferencing

Lecture 39 - Video Conferencing: SIP Protocol

Lecture 40 - 4G Multimedia Conferencing