Indian Journal of Science and Technology
Year: 2020, Volume: 13, Issue: 46, Pages: 4579-4586
S B Rathna Kumar1, P Chaithanya Sushma2*, Panchanan Mohanty3, Manish Kumar Gupta4, Ram Pravesh Sharma1
1Ali Yavar Jung National Institute of Speech and Hearing Disabilities (Divyangjan),, Mumbai, India
2Hear World Speech and Hearing Clinic, Hyderabad, Telangana, India. Tel.: +91 9440902210
3Department of English, GLA University, Mathura, Uttar Pradesh, India
4Department of ENT, Western Command Hospital, Panchkula, India
Tel: +91 9440902210
Email: [email protected]
Received Date:29 October 2020, Accepted Date:30 November 2020, Published Date:22 December 2020
Background: We assessed the speech perception performance of the elderly population with hearing impairment in quiet and noisy listening environments as a function of the number of compression channels in digital hearing aids. Materials and Methods: Participants were 14 elderly individuals with hearing impairment in the age range of 65 to 70 years (M=67.35; SD=1:63). Speech recognition score (SRS) testing as a measure of speech perception was performed on each participant in quiet and +5 dB SNR listening environments with hearing aids in 2, 4, 6, 8, 10, and 12 channel settings respectively. Results: Results revealed significant difference in SRS between 2 vs 4, 2 vs 6, 2 vs 8, 2 vs 10, 2 vs 12, 4 vs 12 channel settings, and no significant difference between 4 vs 6, 4 vs 8, 4 vs 10, 4 vs 12, 6 vs 8, 6 vs 10, 6 vs 12, 8 vs 10, 8 vs 12, 10 vs 12 channel settings in quiet listening environment. Whereas in +5 dB SNR listening environment, there was significant difference in SRS between 2 vs 4, 2 vs 6, 2 v 8, 2 vs 10, 2 vs 12, 4 vs 6, 4 vs 8, 4 vs 10, 4 vs 12 channel settings, and no significant difference between 6 vs 8, 6 vs 10, 6 vs 12, 8 vs 10, 8 vs 12, 10 vs 12 channel settings. Conclusions: Participants achieved maximum speech perception benefit with hearing aids in 4 and 6 channel settings in quiet and noisy listening environments respectively. Further, it was noticed that besides greater performance in the quiet listening environment, the presence of background noise considerably degraded speech perception irrespective of channel settings.
Keywords: Hearing impairment; elderly population; speech recognition score; compression channels; digital hearing aids
© 2020 Rathna Kumar et al.This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)
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