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Binaural dichotic presentation to reduce the effects of spectral masking in moderate bilateral sensorineural hearing loss.
Int J Audiol. 2012 Apr; 51(4):334-44.IJ

Abstract

OBJECTIVE

The objective of the study was to evaluate the effectiveness of binaural dichotic presentation using comb filters with complementary magnitude responses, based on fixed bandwidth and auditory critical bandwidth, in improving speech perception by persons with moderate bilateral sensorineural hearing loss, and to assess its effect on localization of the sound source.

DESIGN AND STUDY SAMPLE

Listening tests involving consonant recognition and source direction identification were conducted on six normal-hearing subjects under simulated hearing loss and on eleven subjects with moderate bilateral sensorineural loss in quiet.

RESULTS

The tests on normal-hearing subjects showed higher recognition scores and smaller response times for the comb filters based on the auditory critical bandwidth. The tests using these comb filters on the hearing-impaired subjects resulted in an increase of 14%-31% (mean: 22%) in recognition scores and a significant decrease in response times, with no significant effect on the identification of the direction of broadband sound sources.

CONCLUSIONS

The results show that dichotic presentation may be useful for speech processing in binaural hearing aids.

Authors+Show Affiliations

Department of Electrical Engineering, Indian Institute of Technology Bombay, Powai, Maharashtra, India.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22201526

Citation

Kulkarni, Pandurangarao N., et al. "Binaural Dichotic Presentation to Reduce the Effects of Spectral Masking in Moderate Bilateral Sensorineural Hearing Loss." International Journal of Audiology, vol. 51, no. 4, 2012, pp. 334-44.
Kulkarni PN, Pandey PC, Jangamashetti DS. Binaural dichotic presentation to reduce the effects of spectral masking in moderate bilateral sensorineural hearing loss. Int J Audiol. 2012;51(4):334-44.
Kulkarni, P. N., Pandey, P. C., & Jangamashetti, D. S. (2012). Binaural dichotic presentation to reduce the effects of spectral masking in moderate bilateral sensorineural hearing loss. International Journal of Audiology, 51(4), 334-44. https://doi.org/10.3109/14992027.2011.642012
Kulkarni PN, Pandey PC, Jangamashetti DS. Binaural Dichotic Presentation to Reduce the Effects of Spectral Masking in Moderate Bilateral Sensorineural Hearing Loss. Int J Audiol. 2012;51(4):334-44. PubMed PMID: 22201526.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Binaural dichotic presentation to reduce the effects of spectral masking in moderate bilateral sensorineural hearing loss. AU - Kulkarni,Pandurangarao N, AU - Pandey,Prem C, AU - Jangamashetti,Dakshayani S, Y1 - 2011/12/27/ PY - 2011/12/29/entrez PY - 2011/12/29/pubmed PY - 2012/7/4/medline SP - 334 EP - 44 JF - International journal of audiology JO - Int J Audiol VL - 51 IS - 4 N2 - OBJECTIVE: The objective of the study was to evaluate the effectiveness of binaural dichotic presentation using comb filters with complementary magnitude responses, based on fixed bandwidth and auditory critical bandwidth, in improving speech perception by persons with moderate bilateral sensorineural hearing loss, and to assess its effect on localization of the sound source. DESIGN AND STUDY SAMPLE: Listening tests involving consonant recognition and source direction identification were conducted on six normal-hearing subjects under simulated hearing loss and on eleven subjects with moderate bilateral sensorineural loss in quiet. RESULTS: The tests on normal-hearing subjects showed higher recognition scores and smaller response times for the comb filters based on the auditory critical bandwidth. The tests using these comb filters on the hearing-impaired subjects resulted in an increase of 14%-31% (mean: 22%) in recognition scores and a significant decrease in response times, with no significant effect on the identification of the direction of broadband sound sources. CONCLUSIONS: The results show that dichotic presentation may be useful for speech processing in binaural hearing aids. SN - 1708-8186 UR - https://www.unboundmedicine.com/medline/citation/22201526/Binaural_dichotic_presentation_to_reduce_the_effects_of_spectral_masking_in_moderate_bilateral_sensorineural_hearing_loss_ L2 - https://www.tandfonline.com/doi/full/10.3109/14992027.2011.642012 DB - PRIME DP - Unbound Medicine ER -