1
Scope
2 References
3 Abbreviations and acronyms
4 Mathematical expressions
5 General description of the
coder
5.1 Input/output sampling
rate
5.2 Codec delay
5.3 DTX/CNG operation
5.4 Optional noise
reduction
5.5 ITU-T
G.722.2-interoperable option
5.6 Complexity and memory
5.7 Coder description
5.8 Organization of the
rest of this Recommendation
6 Functional description of the
encoder
6.1 Common processing
6.2 Signal activity
detection
6.3 Noise reduction
aspects
6.4 Linear prediction
analysis
6.5 Perceptual weighting
6.6 Open-loop pitch
analysis
6.7 Noise energy
estimation
6.8 Classification-based
core layer (layer 1)
6.9 Embedded ACELP
enhancement layer (layer 2)
6.10 Frame erasure
concealment side information (layer 3)
6.11 Transform coding of
higher layers (layers 3, 4, 5)
6.12 DTX/CNG operation
6.13 ITU-T
G.722.2-interoperable option
7 Functional description of the
decoder
7.1 Core layer decoding
(layer 1)
7.2 Embedded ACELP
enhancement layer decoding (layer 2)
7.3 Synthesis
7.4 NB post-processing
7.5 De-emphasis
7.6 Resampling from 12.8
kHz to the output sampling frequency
7.7 NB music enhancer
7.8 Reconstruction of the
high-frequency band for WB output
7.9 Decoding of frame
erasure concealment side information (layer 3)
7.10 Higher layer transform
decoding (layers 3, 4, 5)
7.11 Frame erasure
concealment
7.12 Decoding in DTX/CNG
operation
7.13 Decoding in ITU-T
G.722.2-interoperable option
7.14 Common post-processing
8 Description of the transmitted
parameter indices
8.1 Bit allocation for the
default option
8.2 Bit allocation for SID
frames in the DTX operation
8.3 Bit allocation for the
ITU-T G.722.2-interoperable option
9 Bit-exact description of the
ITU-T G.718 coder
9.1 Use of the simulation
software
9.2 Organization of the
simulation software
Annex A – Reference floating-point implementation for ITU-T
G.718
A.1 Scope
A.2 References
A.3 Overview
A.4 Algorithmic
description
A.5 ANSI
C-code
Bibliography Electronic attachment: ANSI C source code