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    The influence of discrete arriving reflections on perceived intelligibility and speech transmission index measurements

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    Authors
    Hammond, Ross
    Mapp, Peter
    Hill, Adam J.
    Affiliation
    University of Derby
    Peter Mapp Associates
    Issue Date
    2016-09-20
    
    Metadata
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    Abstract
    The most widely used objective intelligibility measurement method, the Speech Transmission Index (STI), does not completely match the highly complex auditory perception and human hearing system. Investigations were made into the impact of discrete reflections (with varying arrival times and amplitudes) on STI scores, subjective intelligibility, and the subjective “annoyance factor.” This allows the effect of comb filtering on the modulation transfer function matrix to be displayed, as well as demonstrates how the perceptual effects of a discrete delay cause subjective “annoyance,” that is not necessarily mirrored by STI. This work provides evidence showing why STI should not be the sole verification method within public address and emergency announcement systems, where temporal properties also need thoughtful consideration.
    Citation
    Hammond, R. et al (2016) 'The influence of discrete arriving reflections on perceived intelligibility and speech transmission index measurements' Proc. 141st Convention of the Audio Engineering Society, paper 9629, Los Angeles, USA, September 2016
    Publisher
    Audio Engineering Society
    Journal
    Proceedings of the 141st Convention of the Audio Engineering Society
    URI
    http://hdl.handle.net/10545/620836
    Additional Links
    http://www.aes.org/e-lib/browse.cfm?elib=18433
    Type
    Meetings and Proceedings
    Language
    en
    Collections
    Department of Electronics, Computing & Maths

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