Effect of hearing aid release time and presentation level on speech perception in noise in elderly individuals with hearing loss
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To investigate the effect of compression time settings and presentation levels on speech perception in noise for elderly individuals with hearing loss. To compare aided speech perception performance in these individuals with age-matched normal hearing subjects. Twenty (normal hearing) participants within the age range of 60–68 years and 20 (mild-to-moderate sensorineural hearing loss) in the age range of 60–70 years were randomly recruited for the study. In the former group, SNR-50 was determined using phonetically balanced sentences that were mixed with speech-shaped noise presented at the most comfortable level. In the SNHL group, aided SNR-50 was determined at three different presentation levels (40, 60, and 80 dB HL) after fitting binaural hearing aids that had different compression time settings (fast and slow). In the SNHL group, slow compression time settings showed significantly better SNR-50 compared to fast release time. In addition, the mean of SNR-50 in the SNHL group was comparable to normal hearing participants while using a slow release time. A hearing aid with slow compression time settings led to significantly better speech perception in noise, compared to that of a hearing aid that had fast compression time settings.
KeywordsCompression time settings SNR-50 Elderly individuals Hearing loss Speech perception in noise
The authors would like to thank the Director, All India Institute of Speech and Hearing for granting permission to carry out the study. Sincere gratitude to Rissimol and Ruby for their comments on English.
Compliance with ethical standards
Conflict of interest
The authors (Dr. Jijo Pottackal Mathai and Mr. Mohammed Hasheem) report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee. This article does not contain any studies with animals performed by any of the authors.
Informed consent was obtained from all individual participants included in the study.
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