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IEC 60268-16

Sound system equipment – Part 16: Objective rating of speech intelligibility by speech transmission index

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Organization: IEC
Publication Date: 1 June 2011
Status: inactive
Page Count: 76
ICS Code (Audio, video and audiovisual systems in general): 33.160.01
scope:

This part of IEC 60268 specifies objective methods for rating the transmission quality of speech with respect to intelligibility.

The objective of this standard is to provide a comprehensive manual for all types of users of the STI method in the fields of audio, communications and acoustics.

This standard does not provide STI criteria for certification of transmission channels (e.g. criteria for a voice-alarm system).

Three methods are presented, which are closely related and are referred to as STI, STIPA, and STITEL. The first two methods are intended for rating speech transmission performance with or without sound systems. The STITEL method has more restricted uses.

NOTE None of the methods are suitable for the measurement and assessment of speech privacy and speech masking systems, as STI has not been validated for conditions that represent speech privacy applications [1]1.

The following information is included:

• measurement techniques;

• prediction techniques.

1 Figures in square brackets refer to the Bibliography.

Document History

September 1, 2020
Sound system equipment – Part 16: Objective rating of speech intelligibility by speech transmission index
This part of IEC 60268 defines the STI model, test signals, measurement and prediction methods. The objective of this document is to provide a comprehensive manual for all types of users of the STI...
IEC 60268-16
June 1, 2011
Sound system equipment – Part 16: Objective rating of speech intelligibility by speech transmission index
This part of IEC 60268 specifies objective methods for rating the transmission quality of speech with respect to intelligibility. The objective of this standard is to provide a comprehensive manual...
May 1, 2003
Sound System Equipment - Part 16: Objective Rating of Speech Intelligibility by Speech Transmission Index
This part of IEC 60268 defines objective methods for rating the transmission quality of speech with respect to intelligibility. The four methods, which are closely related, are referred to as the...
March 1, 1998
Sound System Equipment - Part 16: Objective Rating of Speech Intelligibility by Speech Transmission Index
A description is not available for this item.
January 1, 1988
Sound System Equipment Part 16: The Objective Rating of Speech Intelligibility in Auditoria by the "RASTI" Method
A description is not available for this item.

References

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