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Optimum speech level to minimize listening difficulty in public spaces
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10.1121/1.2382499
/content/asa/journal/jasa/121/1/10.1121/1.2382499
http://aip.metastore.ingenta.com/content/asa/journal/jasa/121/1/10.1121/1.2382499

Figures

Image of FIG. 1.
FIG. 1.

Schematic diagram of impulse response of the test sound field.

Image of FIG. 2.
FIG. 2.

Word intelligibility scores and listening difficulty ratings as a function of the speech level. The reverberation time of the sound fields are constant at . The panel (a) shows the word intelligibility and the panel (b) shows the listening difficulty.

Image of FIG. 3.
FIG. 3.

Word intelligibility scores and listening difficulty ratings as a function of the speech level for each SN ratio. The reverberation time of the sound fields are constant at . The panel (a) shows the word intelligibility and the panel (b) shows the listening difficulty. The open and filled symbols indicate the scores for the SN and , respectively.

Image of FIG. 4.
FIG. 4.

Word intelligibility scores and listening difficulty ratings as a function of the background noise level and SN ratio. The reverberation time of the sound fields are constant at . Panel (a) shows the word intelligibility and panel (b) shows the listening difficulty [data from Morimoto et al. (Ref. 6)].

Image of FIG. 5.
FIG. 5.

Optimum speech levels as a function of speech and background noise level. The reverberation time of the sound fields are constant at . The open triangles and circles indicate the sound fields used in the first and second test, respectively. The filled circles indicate the sound fields used in the previous test (Ref 6). The numbers and numbers under the symbols representing the sound fields indicate listening difficulty ratings and intelligibility scores, respectively.

Tables

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TABLE I.

Four categories for listening difficulty.

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/content/asa/journal/jasa/121/1/10.1121/1.2382499
2007-01-01
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optimum speech level to minimize listening difficulty in public spaces
http://aip.metastore.ingenta.com/content/asa/journal/jasa/121/1/10.1121/1.2382499
10.1121/1.2382499
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