Release from masking for small spatial separations: Effects of age and hearing loss.

Spatially separating target and masking speech can result in substantial spatial release from masking (SRM) for normal-hearing listeners. In this study, SRM was examined at eight spatial configurations of azimuth angle: maskers co-located with the target (0°) or symmetrically separated by 2°, 4°, 6°, 8°, 10°, 15°, or 30°. Results revealed that different listening groups (young normal-hearing, older normal-hearing, and older hearing-impaired) required different minimum amounts of spatial separation between target and maskers to achieve SRM. The results also indicated that aging was the contributing factor predicting SRM at smaller separations, whereas hearing loss was the contributing factor at larger separations.

[1]  Virginia Best,et al.  The influence of spatial separation on divided listening. , 2006, The Journal of the Acoustical Society of America.

[2]  Gerald Kidd,et al.  The effects of hearing loss and age on the benefit of spatial separation between multiple talkers in reverberant rooms. , 2008, The Journal of the Acoustical Society of America.

[3]  W. T. Nelson,et al.  A speech corpus for multitalker communications research. , 2000, The Journal of the Acoustical Society of America.

[4]  G. Kidd,et al.  The effect of spatial separation on informational and energetic masking of speech. , 2002, The Journal of the Acoustical Society of America.

[5]  Pavel Zahorik,et al.  Perceptually relevant parameters for virtual listening simulation of small room acoustics. , 2009, The Journal of the Acoustical Society of America.

[6]  Frederick J. Gallun,et al.  Independent impacts of age and hearing loss on spatial release in a complex auditory environment , 2013, Front. Neurosci..

[7]  C. Mason,et al.  Release from masking due to spatial separation of sources in the identification of nonspeech auditory patterns. , 1998, The Journal of the Acoustical Society of America.

[8]  S. Folstein,et al.  "Mini-mental state". A practical method for grading the cognitive state of patients for the clinician. , 1975, Journal of psychiatric research.

[9]  A. Bronkhorst.  The cocktail-party problem revisited: early processing and selection of multi-talker speech , 2015, Attention, Perception, & Psychophysics.

[10]  Gerald Kidd,et al.  Tuning in the spatial dimension: evidence from a masked speech identification task. , 2008, The Journal of the Acoustical Society of America.

[11]  Michael A Akeroyd,et al.  The perception of apparent auditory source width in hearing-impaired adults. , 2014, The Journal of the Acoustical Society of America.

[12]  B. Moore,et al.  Age-group differences in speech identification despite matched audiometrically normal hearing: contributions from auditory temporal processing and cognition , 2015, Front. Aging Neurosci..

[13]  H. Dillon,et al.  The Effects of Hearing Impairment and Aging on Spatial Processing , 2013, Ear and hearing.

[14]  R L Freyman,et al.  The role of perceived spatial separation in the unmasking of speech. , 1999, The Journal of the Acoustical Society of America.