DS/EN 300726 V.7.0.2
Digital cellular telecommunications system (Phase 2+); Enhanced Full Rate (EFR) speech transcoding; (GSM 06.60 version 7.0.2 Release 1998)
|Publication Date:||15 January 2002|
|ICS Code (Telecommunications in general):||33.020|
The present document describes the detailed mapping between input blocks of 160 speech samples in 13-bit uniform PCM format to encoded blocks of 244 bits and from encoded blocks of 244 bits to output blocks of 160 reconstructed speech samples. The sampling rate is 8 000 sample/s leading to a bit rate for the encoded bit stream of 12,2 kbit/s. The coding scheme is the so-called Algebraic Code Excited Linear Prediction Coder, hereafter referred to as ACELP.