Recommendation ITU-T P.834 gives a methodology for deriving equipment impairment factors (Ies)for digital signal processing devices, namely low bit-rate codecs.The Ie values are intended to be used as an input to the E-model (see Recommendation ITU-T G.107).The methodology specified in this Recommendation makes use of instrumental models (so-called"objective methods"),e.g.,of the model defined in Recommendation ITU-T P.862.It is to be considered as supplementary to the methodology based on auditory listening only tests,described in Recommendation ITU-T P.833.It will provide valid Ie values only for those codecs for which the used instrumental model produces meaningful estimations.This Recommendation includes an electronic attachment containing speech material.
ITU-T P.834-2015 Referenced Document
ITU-T G.107-2015 The E-model: a computational model for use in transmission planning (Study Group 12)
ITU-T G.113-2007 Transmission impairments due to speech processing Study Group 12*， 2024-04-20 Update
ITU-T G.711-1988 PULSE CODE MODULATION (PCM) OF VOICE FREQUENCIES
ITU-T G.712-2001 Transmission performance characteristics of pulse code modulation channels = SERIES G: TRANSMISSION SYSTEMS AND MEDIA DIGITAL SYSTEMS AND NETWORKS - Digital terminal equipments - Coding of analogue signals by pulse code modulation*， 2024-04-20 Update
ITU-T G.727-1990 5- 4- 3- and 2-Bits Sample Embedded Adaptive Differential Pulse Code Modulation (ADPCM) (Study Group XV) 58 pp
ITU-T G.728-2012 Coding of speech at 16 kbit/s using low-delay code excited linear prediction (Study Group 16)
ITU-T G.729-2012 Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear prediction (CS-ACELP) (Study Group 16)
ITU-T P.810-1996 Modulated Noise Reference Unit (MNRU) - Telephone Transmission Quality Methods for Objective and Subjective Assessment of Quality (Study Group 12) 14 pp
ITU-T P.834-2015 history
2015ITU-T P.834-2015 Methodology for the derivation of equipment impairment factors from instrumental models (Study Group 12)