BS EN 60268-16:2011
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Sound system equipment Objective rating of speech intelligibility by speech transmission index
Hardcopy , PDF
English
30-09-2011
18-11-2020
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Description of the STI method
5 Direct method of measuring STI
6 Indirect method of measuring STI using the impulse
response
7 Measurement procedures, post-processing of data
and applications
8 Use of STI as a design prediction tool
Annex A (normative) - Speech transmission index (STI)
and revised STI methods
Annex B (normative) - STIPA method
Annex C (normative) - STITEL method
Annex D (informative) - RASTI method (obsolete)
Annex E (informative) - Qualification of the STI and
relationships with other speech intelligibility
measures
Annex F (informative) - Nominal qualification bands
for STI
Annex G (informative) - Examples of STI qualification
bands and typical applications
Annex H (informative) - Non-native listeners
Annex I (informative) - Effect of age-related hearing
loss and hearing impairment on speech
intelligibility
Annex J (normative) - Calibration of STI test signal
level
Annex K (informative) - Example test report sheet
for STI measurements
Annex L (normative) - Prediction of STI using
statistical methods
Annex M (informative) - Adjustments to measured STI
and STIPA results for simulation of occupancy
noise and different speech levels
Annex N (informative) - Other methods of determining
speech intelligibility
Bibliography
Annex ZA (normative) - Normative references to
international publications with their
corresponding European publications
Describes objective methods for rating the transmission quality of speech with respect to intelligibility.
| Committee |
EPL/100
|
| DevelopmentNote |
Supersedes BS 6840-16(1989) and 02/206670 DC. (08/2003) Supersedes BS 6840-16(1998). (08/2015)
|
| DocumentType |
Standard
|
| Pages |
78
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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 acousti cs.
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.
| Standards | Relationship |
| I.S. EN 60268-16:2011 | Identical |
| NBN EN 60268-16 : 2011 | Identical |
| EN 60268-16:2011 | Identical |
| NF EN 60268-16 : 2015 | Identical |
| IEC 60268-16:2011 | Identical |
| DIN EN 60268-16:2012-05 | Identical |
| UNE-EN 60268-16:2004 | Identical |
| UNE-EN 60268-16:2011 | Equivalent |
A newer version of this standard is available.
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