Linear Predictive Coding (LPC) analysis and synthesis of speech using MATLAB

The speech analysis and synthesis have many applications and is essential especially in transmission of signals due to its bandwidth availability. In this paper, a Linear Predictive Coding (LPC) is used to analyze the speech parameters and synthesis the production of speech by using stored speech parameters. Two female speech samples parameters are analyzed according to Voice Activity Detection (VAD), formant frequency estimation, and autocorrelation analysis and cepstrum analysis for fundamental frequency estimation. After the speech was synthesized, the quality was measured based on Signal-to-Noise Ratio (SNR) and Perceptual Evaluation of Speech Quality (PESQ). All of this was done in MATLAB software environment.