Sentence recognition in the presence of competing speech messages presented in audiometric booths with reverberation times of 0.4 and 0.6 seconds

Kim S. Abouchacra, Janet Koehnke, Joan Besing, Tomasz Letowski

Research output: Contribution to journalArticle

Abstract

This study examined whether differences in reverberation time (RT) between typical sound field test rooms used in audiology clinics have an effect on speech recognition in multi-talker environments. Separate groups of participants listened to target speech sentences presented simultaneously with 0-to-3 competing sentences through four spatially-separated loudspeakers in two sound field test rooms having RT = 0.6 sec (Site 1:N= 16) and RT = 0.4 sec (Site 2: N = 12). Speech recognition scores (SRSs) for the Synchronized Sentence Set (S3) test and subjective estimates of perceived task difficulty were recorded. Obtained results indicate that the change in room RT from 0.4 to 0.6 sec did not significantly influence SRSs in quiet or in the presence of one competing sentence. However, this small change in RT affected SRSs when 2 and 3 competing sentences were present, resulting in mean SRSs that were about 8-10% better in the room with RT = 0.4 sec. Perceived task difficulty ratings increased as the complexity of the task increased, with average ratings similar across test sites for each level of sentence competition. These results suggest that site-specific normative data must be collected for sound field rooms if clinicians would like to use two or more directional speech maskers during routine sound field testing.

Original languageEnglish
Pages (from-to)3-14
Number of pages12
JournalArchives of Acoustics
Volume36
Issue number1
DOIs
StatePublished - 13 Apr 2011

Fingerprint

sentences
reverberation
messages
speech recognition
rooms
sound fields
field tests
ratings
audiology
loudspeakers
estimates

Keywords

  • Reverberation
  • Sound field testing
  • Speech recognition

Cite this

@article{30a49f9ec3384bf391073ab5d9999ac1,
title = "Sentence recognition in the presence of competing speech messages presented in audiometric booths with reverberation times of 0.4 and 0.6 seconds",
abstract = "This study examined whether differences in reverberation time (RT) between typical sound field test rooms used in audiology clinics have an effect on speech recognition in multi-talker environments. Separate groups of participants listened to target speech sentences presented simultaneously with 0-to-3 competing sentences through four spatially-separated loudspeakers in two sound field test rooms having RT = 0.6 sec (Site 1:N= 16) and RT = 0.4 sec (Site 2: N = 12). Speech recognition scores (SRSs) for the Synchronized Sentence Set (S3) test and subjective estimates of perceived task difficulty were recorded. Obtained results indicate that the change in room RT from 0.4 to 0.6 sec did not significantly influence SRSs in quiet or in the presence of one competing sentence. However, this small change in RT affected SRSs when 2 and 3 competing sentences were present, resulting in mean SRSs that were about 8-10{\%} better in the room with RT = 0.4 sec. Perceived task difficulty ratings increased as the complexity of the task increased, with average ratings similar across test sites for each level of sentence competition. These results suggest that site-specific normative data must be collected for sound field rooms if clinicians would like to use two or more directional speech maskers during routine sound field testing.",
keywords = "Reverberation, Sound field testing, Speech recognition",
author = "Abouchacra, {Kim S.} and Janet Koehnke and Joan Besing and Tomasz Letowski",
year = "2011",
month = "4",
day = "13",
doi = "10.2478/v10168-011-0001-4",
language = "English",
volume = "36",
pages = "3--14",
journal = "Archives of Acoustics",
issn = "0137-5075",
publisher = "Polish Academy of Sciences, Committee on Acoustics",
number = "1",

}

Sentence recognition in the presence of competing speech messages presented in audiometric booths with reverberation times of 0.4 and 0.6 seconds. / Abouchacra, Kim S.; Koehnke, Janet; Besing, Joan; Letowski, Tomasz.

In: Archives of Acoustics, Vol. 36, No. 1, 13.04.2011, p. 3-14.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Sentence recognition in the presence of competing speech messages presented in audiometric booths with reverberation times of 0.4 and 0.6 seconds

AU - Abouchacra, Kim S.

AU - Koehnke, Janet

AU - Besing, Joan

AU - Letowski, Tomasz

PY - 2011/4/13

Y1 - 2011/4/13

N2 - This study examined whether differences in reverberation time (RT) between typical sound field test rooms used in audiology clinics have an effect on speech recognition in multi-talker environments. Separate groups of participants listened to target speech sentences presented simultaneously with 0-to-3 competing sentences through four spatially-separated loudspeakers in two sound field test rooms having RT = 0.6 sec (Site 1:N= 16) and RT = 0.4 sec (Site 2: N = 12). Speech recognition scores (SRSs) for the Synchronized Sentence Set (S3) test and subjective estimates of perceived task difficulty were recorded. Obtained results indicate that the change in room RT from 0.4 to 0.6 sec did not significantly influence SRSs in quiet or in the presence of one competing sentence. However, this small change in RT affected SRSs when 2 and 3 competing sentences were present, resulting in mean SRSs that were about 8-10% better in the room with RT = 0.4 sec. Perceived task difficulty ratings increased as the complexity of the task increased, with average ratings similar across test sites for each level of sentence competition. These results suggest that site-specific normative data must be collected for sound field rooms if clinicians would like to use two or more directional speech maskers during routine sound field testing.

AB - This study examined whether differences in reverberation time (RT) between typical sound field test rooms used in audiology clinics have an effect on speech recognition in multi-talker environments. Separate groups of participants listened to target speech sentences presented simultaneously with 0-to-3 competing sentences through four spatially-separated loudspeakers in two sound field test rooms having RT = 0.6 sec (Site 1:N= 16) and RT = 0.4 sec (Site 2: N = 12). Speech recognition scores (SRSs) for the Synchronized Sentence Set (S3) test and subjective estimates of perceived task difficulty were recorded. Obtained results indicate that the change in room RT from 0.4 to 0.6 sec did not significantly influence SRSs in quiet or in the presence of one competing sentence. However, this small change in RT affected SRSs when 2 and 3 competing sentences were present, resulting in mean SRSs that were about 8-10% better in the room with RT = 0.4 sec. Perceived task difficulty ratings increased as the complexity of the task increased, with average ratings similar across test sites for each level of sentence competition. These results suggest that site-specific normative data must be collected for sound field rooms if clinicians would like to use two or more directional speech maskers during routine sound field testing.

KW - Reverberation

KW - Sound field testing

KW - Speech recognition

UR - http://www.scopus.com/inward/record.url?scp=79953778648&partnerID=8YFLogxK

U2 - 10.2478/v10168-011-0001-4

DO - 10.2478/v10168-011-0001-4

M3 - Article

AN - SCOPUS:79953778648

VL - 36

SP - 3

EP - 14

JO - Archives of Acoustics

JF - Archives of Acoustics

SN - 0137-5075

IS - 1

ER -