Opticom


Standards:



> ETSI
[www.etsi.org]

ETSI Technical Report ETR 250, Transmission and Multiplexing (TM); Speech communication quality from mouth to ear for 3,1 kHz handset telephony across networks, ETSI 1996 [see also ITU-T Recommendation G.107]

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> ISO/IEC
[www.iso.org]

ISO/IEC/JTC1/SC29/WG11 Draft Document N1557, Evaluation Methods and procedures for MPEG-4 tests, 1997

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> ITU-R
[www.itu.org]

ITU-R Recommendation BS.562-3, Subjective assessment of sound quality

no summary available


ITU-R Recommendation BS.1116-1, Methods for the Subjective Assessment of small Impairments in Audio Systems including Multichannel Sound Systems, 1997

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ITU-R Recommendation BS.1387-1, Method for Objective Measurements of Perceived Audio Quality (PEAQ), Revised 11/01

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ITU-R Recommendation BS.1534, Method for the subjective assessment of intermediate quality level of coding systems), June 2001

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> ITU-T
[www.itu.org]

ITU-T Contribution COM12-74-E, Review of Validation Tests for Objective Speech Quality Measures, March 1996

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ITU-T Recommendation G.107, The E-model, a computational model for use in transmission planning, May 2000

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ITU-T Recommendation E.420, Checking the Quality of the International Telephone Service – General Considerations, 1988, (Extract from the Blue Book)

no summary available


ITU-T Recommendation P.562, Analysis and interpretation of INMD voice-service measurements, May 2000

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ITU-T Recommendation P.563, Single Ended Method for Objective Speech Quality Assessment in Narrow-Band Telephony Applications, 2004

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ITU-T Recommendation P.800, Methods for subjective determination of transmission quality, 1996

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ITU-T Recommendation P.800.1, Mean Opinion Score (MOS) Terminology, March 2003

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ITU-T Recommendation P.810, Modulated Noise Reference Unit (MNRU), 1996

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ITU-T Recommendation P.830, Subjective Performance Assessment of Telephone-Band and Wideband Digital Codecs, 1996

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ITU-T Recommendation P.833, Methodology for Derivation of Equipment Impairment Factors from Subjective Listening-Only Tests, 2001

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ITU-T Recommendation P.834, Methodology for the Derivation of Equipment Impairment Factors from Instrumental Models, 2002

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ITU-T Recommendation P.861, Objective Quality measurement of telephone-band (300 - 3400 Hz) speech codecs, 1996

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ITU-T Recommendation P.862, PESQ an objective method for end-to-end speech quality assessment of narrowband telephone networks and speech codecs, February 2001

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> Further Information For further information on OPTICOM Voice/Audio Quality measurement products refer to our [OPERA download] information.

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