行動通信所使用的語音編碼技術

Standard Service Type Speech coding Bit rate

type (k bps)

GSM Cellular RPE-LTP 13

CD-900 Cellular SBC 16

USDC(IS-54) Cellular VSELP 8

IS-95 Cellular CELP 1.2,2.4,4.8,9.6

IS-95 PCS PCS CELP 14.4

PDC Cellular VSELP 4.5,6.7,11.2

CT2 Cordless ADPCM 32

DECT Cordless ADPCM 32

PHS Cordless ADPCM 32

DCS1800 PCS(Cellular) RPE-LTP 13

PACS PCS ADPCM 32

LPC : Linear Predictive Coder

CELP : Code Excited LPC

RPE-LTP : Regular Pulse Excitation-Long Term Prediction

ADPCM : Adaptive Digital Pulse Code Modulation

VSELP : Vector Sum Excited Linear Predictor

SBS : Sub-Band Coding