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(1) 3GPP TS26.190, AMR Wideband speech codec;
Transcoding functions(Release 5).
(2) 3GPP TS 26.194, Voice Activity Detection (VAD).
(3) 3GPP TS 26.174, AMR wideband speech codec; Test sequences.
(4) 3GPP TS 26.194, Frame Structure.
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