MATLAB Source Code for G729 Encoding and Decoding

This package provides complete MATLAB source code for G729 speech compression standard implementation. The codec operates as follows: For encoding: Execute "G729code(speech)" in MATLAB command window, where 'speech' must be a pre-loaded row vector containing audio data in the workspace. The encoder processes speech frames using Code Excited Linear Prediction (CELP) algorithm, performing LPC analysis, pitch detection, and codebook search. The output generates a "coding.bit" file containing compressed parameters including LSP coefficients, adaptive codebook indices, and fixed codebook parameters. For decoding: Copy "coding.bit" to the "G729 decoder" directory and run "G729decodermain" in MATLAB. The decoder reconstructs speech by processing encoded parameters through synthesis filters, generating "syn_speech.wav" output file. The decoding process involves parameter decoding, excitation generation, and speech synthesis using LPC filter banks. The implementation maintains G729 standard specifications including 10ms frame processing, 5ms look-ahead, and proper handling of speech parameters quantization. Suitable for speech processing research and educational purposes.