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ITU-T P.58 (05/2013)

Head and torso simulator for telephonometry

Recommendation ITU-T P.58 specifies the electroacoustic characteristics of the head and torso simulator (HATS) to be used for telephonometric measurements. Both the sound generation and sound pick up characteristics of this device are specified.
This revised Recommendation describes new distortion and output linearity requirements for the artificial mouth of the HATS (as described in Recommendation ITU-T P.51 (1996)), and describes the positioning on the HATS of the revised type 3.2 and new type 3.4 artificial ears.
The artificial ears described in this Recommendation support super-wideband as well as full-band applications. However, it should be noted that the acoustical impedance of the artificial ears has some limitations in realistically simulating human ears.
The artificial mouth described in this Recommendation supports super-wideband applications. However, it should be noted that the directionality of the artificial mouth is limited in its ability to simulate the human mouth in the super-wideband frequency range.

Citation:	https://handle.itu.int/11.1002/1000/11932
Series title:	P series: Telephone transmission quality, telephone installations, local line networks P.50-P.59: Objective measuring apparatus
Approval date:	2013-05-14
Approval process:	AAP
Status:	Superseded
Maintenance responsibility:	ITU-T Study Group 12
Further details:	Patent statement(s) Development history [2 related work items in progress]

Ed.	ITU-T Recommendation	Status	Summary	Table of Contents	Download
7	P.58 (03/2023)	In force	here	here	here
6	P.58 (06/2021)	Superseded	here	here	here
5	P.58 (02/2021)	Superseded	here	here	here
4	P.58 (05/2013)	Superseded	here	here	here
3	P.58 (12/2011)	Superseded	here	here	here
2.2	P.58 (1996) Err. 2 (07/2008)	Superseded	-	-	here
2.1	P.58 (1996) Err. 1 (01/2003)	Superseded	-	-	here
2	P.58 (08/1996)	Superseded	here	here	here
1	P.58 (03/1993)	Superseded	-	here	here


ITU-T Supplement	Title	Status	Summary	Table of contents	Download
P Suppl. 10 (11/1988)	Considerations relating to transmission characteristics for analogue handset telephones	In force	-	here	here
P Suppl. 16 (11/1988)	Guidelines for placement of microphones and loudspeakers in telephone conference rooms and for group audio terminals (GATs)	In force	-	here	here
P Suppl. 20 (03/1993)	Examples of measurements of handset receive-frequency responses: dependence on earcap leakage losses	In force	-	here	here
P Suppl. 23 (02/1998)	ITU-T coded-speech database	In force	here	here	here
P Suppl. 24 (10/2005)	Parameters describing the interaction with spoken dialogue systems	In force	here	here	here
P Suppl. 25 (01/2011)	Parameters describing the interaction with multimodal dialogue systems	In force	here	here	here
P Suppl. 26 (09/2017)	Scenarios for the subjective evaluation of audio and audiovisual multiparty telemeeting quality	In force	here	here	here
P Suppl. 28 (09/2020)	Considerations for the development of new QoS and QoE related objective models to be embedded in Recommendations prepared by ITU-T Study Group 12	In force	here	here	here

Title	Approved on	Download
Addition to Section 2.3 of the Handbook on Telephonometry	2000	here
Addition to Section 3 of the Handbook on Telephonometry	2000	here
Additions to the Handbook on Telephonometry	1999	here
Telephonometry	1992	here

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ITU-T P.58 (05/2013)