Speech Compression Techniques: An Overview

Abstract

Speech is the natural phenomena of human for communication purpose. The aim of speech coding is to compress the speech signal to the highest possible compression ratio but maintaining user acceptability. In this paper basically two major approaches for speech compression techniques are discussed like waveform coder: pulse code modulation, adaptive differential pulse code modulation, Sub-band coding, transform coding and vocoder: linear predictive coder, formant coder/synthesis.