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ITU-T P.57

Artificial ears

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Organization: ITU-T
Publication Date: 1 December 2011
Status: active
Page Count: 54
scope:

This Recommendation specifies the artificial ears for telephonometric use. Three types are recommended, covering the different transducers, types, sizes and technologies.

The methods of use of the artificial ears are outside the scope of this Recommendation; however, some general rules are provided about the application force and the positioning of transducers.

Document History

ITU-T P.57
December 1, 2011
Artificial ears
This Recommendation specifies the artificial ears for telephonometric use. Three types are recommended, covering the different transducers, types, sizes and technologies. The methods of use of the...
ITU-T P.57
April 1, 2009
Artificial ears
This Recommendation specifies the artificial ears for telephonometric use. Three types are recommended, covering the different transducers, types, sizes and technologies. The methods of use of the...
ITU-T P.57
January 27, 2005
Artificial ears
A description is not available for this item.
ITU-T P.57
July 1, 2002
Artificial ears
A description is not available for this item.
ITU-T P.57
August 1, 1996
Artificial Ears - Series P: Telephone Transmission Quality Objective Measuring Apparatus
A description is not available for this item.
P.57
January 1, 1993
Artificial Ears - Telephone Transmission Quality - Objective Measuring Apparatus - Corrigendum 1 (Study Group XII) 16 pp
A description is not available for this item.
P.57
January 1, 1993
Artificial Ears - Telephone Transmission Quality - Objective Measuring Apparatus
A description is not available for this item.
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References

This document references:
ASTM D2240 - Standard Test Method for Rubber Property-Durometer Hardness
Published by ASTM on August 1, 2015
This test method covers twelve types of rubber hardness measurement devices known as durometers: Types A, B, C, D, DO, E, M, O, OO, OOO, OOO-S, and R. The procedure for determining indentation...
This document references:
IEC 60318-1 - Electroacoustics – Simulators of human head and ear – Part 1: Ear simulator for the measurement of supra-aural and circumaural earphones
Published by IEC on August 1, 2009
This International Standard relates to the specification of an ear simulator which covers the frequency band 20 Hz to 10 000 Hz and is intended for calibrating supra-aural earphones used in...
This document references:
IEC 60318-4 - Electroacoustics – Simulators of human head and ear – Part 4: Occluded-ear simulator for the measurement of earphones coupled to the ear by means of ear inserts
Published by IEC on January 1, 2010
This part of IEC 60318 describes an occluded-ear simulator intended for the measurement of insert earphones in the frequency range from 100 Hz to 10 000 Hz. It is suitable for air conduction hearing...
This document is referenced by:
ES 202 396-1 - Speech and multimedia Transmission Quality (STQ); Speech quality performance in the presence of background noise; Part 1: Background noise simulation technique and background noise database
Published by ETSI on October 1, 2017
The quality of background noise transmission is an important factor, which significantly contributes to the perceived overall quality of speech. Existing and even more the new generation of...
This document is referenced by:
CEI EN 60268-7 - Sound system equipment Part 7: Headphones and earphones
Published by CEI on November 1, 2018
A description is not available for this item.
This document is referenced by:
TS 126 132 - Universal Mobile Telecommunications System (UMTS); LTE; 5G; Speech and video telephony terminal acoustic test specification
Published by ETSI on November 1, 2020
The present document is applicable to any terminal capable of supporting narrowband, wideband, super-wideband or fullband telephony, either as a stand-alone service or as the telephony component of a...
This document is referenced by:
ITU-T P.381 - Technical requirements and test methods for the universal wired headset or headphone interface of digital mobile terminals
Published by ITU-T on October 1, 2020
This Recommendation 1 specifies electrical requirements and test methods for the universal analogue headset/headphone interface used in digital mobile terminals. It is also applicable for terminals...
This document is referenced by:
ES 200 381-1 - Telephony for hearing impaired people; Inductive coupling of telephone earphones to hearing aids; Part 1: Fixed-line speech terminals
Published by ETSI on October 1, 2012
The present document applies to fixed-line telephones having earphones (see ITU-T Recommendation P.57 [4]) which are intended for direct application to the ear (e.g. handsets, supra-aural headsets)...
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