1 Scope
2 Normative references
3 Definitions, symbols and abbreviations
3.1 Definitions
3.2 Symbols
3.3 Abbreviations
4 Outline description
4.1 Functional description of audio parts
4.2 Preparation of speech samples
4.3 Principles of the adaptive multi-rate wideband speech encoder
4.4 Principles of the adaptive multi-rate speech decoder
4.5 Sequence and subjective importance of encoded parameters
5 Functional description of the encoder
5.1 Preprocessing
5.2 Linear prediction analysis and quantization
5.3 Perceptual weighting
5.4 Open‑loop pitch analysis
5.5 Impulse
response computation
5.6 Target signal computation
5.7 Adaptive codebook
5.8 Algebraic codebook
5.9 Quantization of the adaptive and fixed codebook gains
5.10 Memory update
5.11 High-band
gain generation
6 Functional description of the decoder
6.1 Decoding and speech synthesis
6.2 High-pass filtering, up-scaling and interpolation
6.3 High frequency band
7 Detailed bit allocation of the adaptive multi-rate wideband codec
8 Homing sequences
8.1 Functional description
8.2 Definitions
8.3 Encoder homing
8.4 Decoder homing
9 Voice Activity Detector (VAD)
9.1 VAD symbols
9.2 Functional description
10 Mandatory AMR-WB
codec modes for the speech telephony service in 3GPP
BIBLIOGRAPHY