Digital Speech: Coding for Low Bit Rate Communication Systems, 2nd Edition

Index

μ-Law PCM 32–3

3.7 kb/s ACELPC coder 319

4 kb/s ACELP coder 332

6 kb/s ACELP coder 332–3

8 kb/s ACELP coder 333–4

4.15 kb/s IMBE coder 270–1

2.4 kb/s MELP coder 113

4 kb/s MELP/CELP coder 283, 285

1.2 kb/s SB-LPC coder 128

4 kb/s SB-LPC coder 128, 271–5, 319

4.8 kb/s STC coder 268–70

1-tap pitch filter 81–2

3-tap pitch filter 82

A

AaS, see analysis-and-synthesis

AbS-LPC coder

block diagram 201

CELP 212, 213, 214, 219–60

excitation signal 200, 206–8, 208–12

generally 199–200

MPLPC 215–17, 218

perceptually-based error minimization procedure 200, 203–6

procedure 201–2

RPELPC 217–19

SELP 212–15

time-varying filter 200, 202–3

weighting filter 204–5

AC, see autocorrelation

ACELP mode 298

ACELP mode error 348, 350

ACELP transition quantization 332–4

acoustic noise, performance of hybrid coder 336, 337–45

acoustic noise, robustness of SWPM 342

active noise suppression 2

adaptive codebook 52, 53

adaptive differential pulse code modulation (ADPCM) 1, 2, 8, 12, 13

adaptive multi-rate (AMR) coder 13, 14

adaptive multi-rate (ETSI) coding standard 360, 362–3, 364–8, 374–5

adaptive normalized least mean squared (ANLMS) algorithm 416–18

adaptive post-filtering 257–8

adaptive quantizer 33–6, 36–9

adaptive sequential LMS method 100–1

adaptive transversal filter in echo cancellation 413–14

ADPCM, see adaptive differential pulse code modulation

A-Law PCM 32–3

algebraic codebook excitation 247–51

algorithm

adaptive normalized least mean squared 416–18

Burg 74

Durbin 69, 72

frequency-domain pitch ...