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5   Functional description of the encoder   PDF-p. 25
5.1   Common processing
5.1.1   High-pass Filtering
5.1.2   Complex low-delay filter bank analysis
5.1.3   Sample rate conversion to 12.8 kHz   PDF-p. 27      Up
5.1.4   Pre-emphasis
5.1.5   Spectral analysis   PDF-p. 30
5.1.6   Bandwidth detection   PDF-p. 32
5.1.7   Bandwidth decision   PDF-p. 34      Up
5.1.8   Time-domain transient detection   PDF-p. 37
5.1.9   Linear prediction analysis   PDF-p. 38
5.1.10   Open-loop pitch analysis   PDF-p. 43
5.1.11   Background noise energy estimation   PDF-p. 52
5.1.12   Signal activity detection   PDF-p. 68
5.1.13   Coding mode determination   PDF-p. 90
5.1.13.1   Unvoiced signal classification   PDF-p. 91
5.1.13.2   Stable voiced signal classification   PDF-p. 96
5.1.13.3   Signal classification for FEC
5.1.13.4   Transient signal classification   PDF-p. 99
5.1.13.5   Modification of coding mode in special cases   PDF-p. 100
5.1.13.6   Speech/music classification   PDF-p. 101      Up
5.1.14   Coder technology selection

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