Chapter 2 Low Bit-Rate Speech Coding

In this chapter an overview is given of speech coding techniques at several bit rates. Most

of them use Linear Prediction. This overview is not meant to be complete its purpose is

to make the reader somewhat familiar with Linear Predictive Coding which is necessary for

a proper understanding of later chapters. Section 2.1 treats the subject of quantisation and

coding. In section 2.2 a descr iption of speech production and speech sounds is given. Coders

based on linear prediction can be considered as being based on a simple speech production

model. This model is explained in section 2.3. Section 2.4 describes various speech coding

algorithms and techniques. Section 2.5 briefly describes some measures for the quality of

coded speech.-In　this chapter an overview　is given of speech coding　techniques at several bit　rates. Most

of　them use Linear Prediction. This overview　is not meant　to be complete　 its purpose　is

to make the reader somewhat familiar with Linear Predictive Coding which　is necessary for

a proper understanding of　later chapters. Section 2.1　treats　the subject of quantisation and

coding. In section 2.2 a descr iption of speech production and speech sounds is given. Coders

based on linear prediction can be considered as being based on a simple speech production

model. This model　is explained　in section 2.3. Section 2.4 describes various speech coding

algorithms and　techniques. Section 2.5 briefly describes some measures　for　the quality of

coded speech.