This Recommendation is based on Annex BP.80 and on experience gained from several international experiments [5], [6], [9], [lo], [12], [13], [15] and [17]. Further, this Recommendation defines a specific testing method for evaluating digital processes. This method allows the subjective effects of distortion introduced by the speech coding process to be taken into account when assessing the performance of the evolving international network.This Recommendation contains advice on how to assess the performance of digital codecs. This Recommendation must be read in conjunction with Recommendation P.80. Additional information is available in sources listed in the Bibliography.
ITU-T P.830 FRENCH-1996 Referenced Document
ITU-T G.113-1996 Transmission Impairments - Transmission Systems and Media General Characteristics of International Telephone Connections and International Telephone Circuits (Study Group 12) 33 pp
ITU-T G.191-1993 Software Tools for Speech and Audio Coding Standardization (Study group 15)
ITU-T G.192-1996 A Common Digital Parallel Interface for Speech Standardisation Activities - General Characteristics of International Telephone Connections and International Telephone Circuits Study Group 15
ITU-T G.711-1988 PULSE CODE MODULATION (PCM) OF VOICE FREQUENCIES
ITU-T G.712-1992 Transmission Performance Characteristics of Pulse Code Modulation (Study Group XV) 33 pp
ITU-T G.722-1988 7 kHz Audio-Coding within 64 kBit/s - General Aspects of Digital Transmission Systems; Terminal Equipments Study Group XV and XVIII; Covering Note May 30, 2003
ITU-T G.728-1992 Coding of Speech at 16 kBit/s Using Low-Delay Code Excited Linear Prediction General Aspects of Digital Transmission Systems; Terminal Equipments Study Group XV; 65 pp
ITU-T O.131-1988 QUANTIZING DISTORTION MEASURING EQUIPMENT USING A PSEUDO-RANDOM NOISE TEST SIGNAL
ITU-T O.132-1988 QUANTIZING DISTORTION MEASURING EQUIPMENT USING A SINUSOIDAL TEST SIGNAL
ITU-T O.133-1993 EQUIPMENT FOR MEASURING THE PERFORMANCE OF PCM ENCODERS AND DECODERS Study Group IV
ITU-T O.41-1994 Psophometer for Use on Telephone-Type Circuits - Specifications for Measuring Equipment - Equipment for the Measurement of Analogue Parameters (Study Group 4) 17 pp [Superseded: ITU-T P.53]
ITU-T P.10-1993 Vocabulary of Terms on Telephone Transmission Quality and Telephone Sets - Telephone Transmission Quality Vocabulary and Effects of Transmission Parameters on Customer Opinion of Transmission Quality and Their Assessment (Study Group XII; 18 pp)
ITU-T P.48-1988 SPECIFICATION FOR AN INTERMEDIATE REFERENCE SYSTEM
ITU-T P.830 FRENCH-1996 history
1996ITU-T P.830 FRENCH-1996 SUBJECTIVE PERFORMANCE ASSESSMENT OF TELEPHONE-BAND AND WIDEBAND DIGITAL CODECS