ITU-T P.833.1-2009 PDF

Scope: The extension of the methodology described in this Recommendation is intended to derive wideband equipment impairment factors Ie,wbquantifying the impairment introduced by wideband (50-7000 Hz) speech codecs, including or not the effects of transmission errors, such as random bit errors, random packet loss or discard, or bursty packet loss or discard. Such wideband equipment impairment factors have been introduced as a simplified measure of the degradation introduced by wideband speech codecs on the integral transmission quality from mouth to ear. They are in no way an exact description of the effects related to each individual codec or codec tandem, which may be very diverse in their perceptualnature. Instead, they represent the relative degradation in comparison to other impairments occurring in a connection.

ITU-T P.833.1-2009 Referenced Document

ITU-T G.107-2008 (Pre-Published) 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*， 2024-04-19 Update
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.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.341-2005 Transmission characteristics for wideband (150-7000 Hz) digital hands-free telephony terminals Study Group 12
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P: Telephone Transmission Quality; Methods for Objective and Subjective Assessment of Quality Study Group 12; 38 pp [Superseded: ITU-T P.80 ITU-T P.80]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.833-2001 Methodology for Derivation of Equipment Impairment Factors from Subjective Listening-Only Tests Series P: Telephone Transmission Quality Telephone Installations Local Line Networks Methods for Objective and Subjective Assessment of Quality Study Group 12

2009 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
2008 ITU-T P.833.1-2008 (Pre-Published) Methodology for the derivation of equipment impairment factors from subjective listening-only tests for wideband speech codecs