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Effects of aging on word intelligibility and listening difficulty in various reverberant fields
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10.1121/1.2713715
/content/asa/journal/jasa/121/5/10.1121/1.2713715
http://aip.metastore.ingenta.com/content/asa/journal/jasa/121/5/10.1121/1.2713715

Figures

Image of FIG. 1.
FIG. 1.

Impulse response of the test sound field. Pd and Pr are the sound pressure level of a direct sound and the onset of a reverberation signal, respectively.

Image of FIG. 2.
FIG. 2.

Audiogram for listeners used in the listening test. Open circles and two solid lines represent the mean and s.d. of the hearing level of listeners, respectively. Dashed line represents the estimated mean hearing level of listeners by ISO 7029.

Image of FIG. 3.
FIG. 3.

Word intelligibility scores as a function of hearing level and a parameter of the sound fields, for each frequency at which the hearing level was measured. The word intelligibility scores and hearing level are the average for the group classified according to hearing level in steps. Different symbols represent different sound fields.

Image of FIG. 4.
FIG. 4.

As for Fig. 3, but for listening difficulty ratings.

Image of FIG. 5.
FIG. 5.

values of word intelligibility scores for the aged as a function of those for the young for each group classified by the average of hearing levels at 2 and . The word intelligibility scores for the young are obtained by Morimoto et al.

Image of FIG. 6.
FIG. 6.

The relation between estimated and measured word intelligibility scores for the aged.

Image of FIG. 7.
FIG. 7.

Estimated word intelligibility scores for the aged as a function of word intelligibility scores for the young and as a parameter of hearing level.

Image of FIG. 8.
FIG. 8.

As for Fig. 5, but for listening difficulty ratings.

Image of FIG. 9.
FIG. 9.

As for Fig. 6, but for listening difficulty ratings.

Image of FIG. 10.
FIG. 10.

As for Fig. 7, but for listening difficulty ratings.

Tables

Generic image for table
TABLE I.

Categories of listening difficulty.

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TABLE II.

The number of listeners for the groups that are classified by hearing level in steps.

Generic image for table
TABLE III.

F-ratios of the simple main effect of “hearing level” on word intelligibility scores for each sound field. The values were obtained by a repeated measures two-way analysis of variance with “hearing level” and “sound field.” The analyses of variance were performed for the hearing level at each frequency.

Generic image for table
TABLE IV.

As for Table III, but for listening difficulty ratings.

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/content/asa/journal/jasa/121/5/10.1121/1.2713715
2007-05-01
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of aging on word intelligibility and listening difficulty in various reverberant fields
http://aip.metastore.ingenta.com/content/asa/journal/jasa/121/5/10.1121/1.2713715
10.1121/1.2713715
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