Speech Recognition in an Enclosure with a Long Reverberation Time

Kociński, J.; Ozimek, E.

doi:10.1515/aoa-2016-0025

Artykuł - szczegóły

Tytuł artykułu

Speech Recognition in an Enclosure with a Long Reverberation Time

Autorzy

Kociński J. , Ozimek E.

Treść / Zawartość

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DOI

10.1515/aoa-2016-0025

Warianty tytułu

Języki publikacji

Abstrakty

The aim of this work was to measure subjective speech intelligibility in an enclosure with a long reverberation time and comparison of these results with objective parameters. Impulse Responses (IRs) were first determined with a dummy head in different measurement points of the enclosure. The following objective parameters were calculated with Dirac 4.1 software: Reverberation Time (RT), Early Decay Time (EDT), weighted Clarity (C₅₀) and Speech Transmission Index (STI). For the chosen measurement points, a convolution of the IRs with the Polish Sentence Test (PST) and logatome tests was made. PST was presented at a background of a babble noise and speech reception threshold – SRT (i.e. SNR yielding 50% speech intelligibility) for those points were evaluated. A relationship of the sentence and logatome recognition vs. STI was determined. It was found that the final SRT data are well correlated with speech transmission index (STI), and can be expressed by a psychometric function. The difference between SRT determined in condition without reverberation and in reverberation conditions appeared to be a good measure of the effect of reverberation on speech intelligibility in a room. In addition, speech intelligibility, with and without use of the sound amplification system installed in the enclosure, was compared.

Słowa kluczowe

speech intelligibility speech recognition sentence test reverberation time clarity speech transmission index

Wydawca

Instytut Podstawowych Problemów Techniki PAN
Komitet Akustyki PAN
Polskie Towarzystwo Akustyczne

Czasopismo

Archives of Acoustics

Rocznik

2016

Tom

Vol. 41, No. 2

Strony

255--264

Opis fizyczny

Bibliogr. 51 poz., rys., tab., wykr.

Twórcy

autor

Kociński J.

jedrzej.kocinski@amu.edu.pl

Institute of Acoustics, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

autor

Ozimek E.

Institute of Acoustics, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.

Typ dokumentu

Bibliografia

Identyfikator YADDA

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