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Work item:
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P.58
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Subject/title:
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Head and torso simulator for telephonometry
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Status:
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Approved on 2021-02-13 [Issued from previous study period]
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Approval process:
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AAP
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Type of work item:
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Recommendation
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Version:
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Rev.
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Equivalent number:
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-
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Timing:
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-
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Liaison:
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3GPP, ETSI
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Supporting members:
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-
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Summary:
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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.
The artificial ears described in this Recommendation support narrowband, wideband, 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 narrowband, wideband and 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.
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Comment:
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Improvement of the specifications for acoustic frontends, mainly artificial ears, in order to better match an extended frequency range and fit modern earphone devices, aiming to revise Recommendation P.58.
Investigation of the directivity - including performance behind the lip-plane - as well as extended frequency range of the artificial mouth, aiming to revise Recommendation P.58.
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Reference(s):
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Historic references:
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Contact(s):
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| ITU-T A.5 justification(s): |
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First registration in the WP:
2014-01-17 14:52:45
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Last update:
2021-02-17 10:12:59
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