1 Introduction
2
General description of the coder
2.1 Encoder
2.2 Decoder
2.3 Delay
2.4 Speech coder description
2.5 Notational conventions
3
Functional description of the encoder
3.1 Pre-processing
3.2 Linear prediction analysis and quantization
3.3 Perceptual weighting
3.4 Open-loop pitch analysis
3.5 Computation of the impulse response
3.6 Computation of the
target signal
3.7 Adaptive-codebook search
3.8 Fixed codebook – Structure and search
3.9 Quantization of the gains
3.10 Memory update
4
Functional description of the decoder
4.1 Parameter
decoding procedure
4.2 Post-processing
4.3 Encoder and decoder initialization
4.4 Concealment of frame erasures
5
Bit-exact description of the CS-ACELP coder
5.1 Use of the simulation software
5.2 Organization of the simulation software