A STUDY ON LINEAR PRIDICTION AND WARPED LINEAR PRIDICTION CODING OF SPEECH SIGNALS

Abstract

Digital signal processing techniques were first applied to speech processing to simulate complex analog system, Initially, it was viewed that analog systems can be simulated on a computer to avoid the necessity of building the system when digital simulations of analog systems were first applied. The computations required a good deal of time. Today, digital techniques in speech communication system have become vital part of research speech in digital form can be reliably transmitted over very noisy channels. A communication network can be used to transmit both speech and data in digital form. From the point of view of security and secrecy, the digital techniques for speech signal processing are also advantageous. In this paper the application of (+1, -1) system in speech signal processing have been discussed. This system is being employed in linear prediction and warped linear prediction coding of speech signals, power spectral density, prediction gain, correlation function and paracor coefficients have been theoretically analyzed and studied in detail.