SSH EN 301 245 V4.0.1:1997

Sistemi i telekomunikacionit dixhital celular (Faza 2); Përdorimi i Vlerave të Plota (EFR) ndërkodimi i fjalimit (GSM 06.60 versioni 4.0.1)

Digital cellular telecommunications system (Phase 2); Enhanced Full Rate (EFR) speech transcoding (GSM 06.60 version 4.0.1)

Scope

This EN 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.