ITU-T P.834.1-2015 Extension of the methodology for the derivation of equipment impairment factors from instrumental models for wideband speech codecs (Study Group 12)
Recommendation ITU-T P.834.1 describes an extension of the methodology for deriving equipment impairment factors from instrumental models of Recommendation ITU-T P.834.It is intended that it be primarily applied to determine wideband equipment impairment factors Ie,wb,capturing the degradation introduced by wideband speech codecs.The resulting wideband equipment impairment factors derived by this methodology are intended to be used on the extended transmission rating scale underlying the E-model (see Appendix II of Recommendation ITU-T G.107).They reflect the auditory impairments of the corresponding equipment in a listening-only mode.The methodology of Recommendation ITU-T P.834.1makes use of instrumental models (so called "objective methods"),e.g.,the model defined in Recommendation ITU-T P.862.2.It is to be considered as supplementary to the methodology based on auditory listening-only tests,described in Recommendation ITU-T P.833.1.It provides valid Ie,wb values only for those codecs for which the instrumental model used produces meaningful estimations. Speech material associated with Recommendation ITU-T P.834.1 is freely available on the test signal database at www.itu.int/net/ITU-T/sigdb.
ITU-T P.834.1-2015 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.722-2012 7 kHz audio-coding within 64 kbit/s (Study Group 16)
ITU-T G.722.1-2005 Low-complexity coding at 24 and 32 kbit/s for hands-free operation in systems with low frame loss Study Group 16
ITU-T G.722.2-2003 Wideband coding of speech at around 16 kbit/s using Adaptive Multi-Rate Wideband (AMR-WB) (Study Group 16)
ITU-T P.341-2011 (Pre-Published) Transmission characteristics for wideband digital loudspeaking and hands-free telephony terminals
ITU-T P.501-2012 Test signals for use in telephonometry (Study Group 12)
ITU-T P.56-2011 (Pre-Published) Objective measurement of active speech level
ITU-T P.800-1996 Methods for Subjective Determination of Transmission Quality - Series P: Telephone Transmission Quality; Methods for Objective and Subjective Assessment of Quality Study Group 12; 38 pp [Superseded: ITU-T P.80 ITU-T P.80]
ITU-T P.830-1996 Subjective Performance Assessment of Telephone- Band and Wideband Digital Codecs - Telephone Transmission Quality Methods for Objective and Subjective Assessment of Quality (Study Group 12) 27 pp
ITU-T P.833.1-2009 Methodology for the derivation of equipment impairment factors from subjective listening-only tests for wideband speech codecs Study Group 12
ITU-T P.834-2015 Methodology for the derivation of equipment impairment factors from instrumental models (Study Group 12)
ITU-T P.862.2-2007 Wideband extension to Recommendation P.862 for the assessment of wideband telephone networks and speech codecs Study Group 12*， 2024-04-20 Update
ITU-T P.834.1-2015 history
2015ITU-T P.834.1-2015 Extension of the methodology for the derivation of equipment impairment factors from instrumental models for wideband speech codecs (Study Group 12)
2009ITU-T P.834.1-2009 Extension of the methodology for the derivation of equipment impairment factors from instrumental models for wideband speech codecs Study Group 12