Abstract
Previous research [E. W. Yund, H. J. Simon, and R. Efron, J. Rehab. Res. Dev. 24, 161–180 (1987)] has demonstrated the effectiveness of an eight‐channel compression hearing aid for individuals with sensorineural hearing loss in the task of speech discrimination in a background of speech‐band noise. In the present study, similar multichannel compression systems with 4, 6, 8, 12, and 16 channels were compared with each other and with linear (frequency equalized amplification) and unprocessed (flat amplification) conditions. The results on 15 hearing loss subjects showed increasing speech discrimination performance as the number of channels increased, although the difference between 4 and 8 channels was much greater than the difference between 8 and 16 channels. Confirming the previous results, the performance advantage of the multichannel compression conditions over the linear and unprocessed conditions was greater at low signal‐to‐noise ratios (S/N), e.g., + 5, 0, or − 5 dB as opposed to + 10 or + 15 dB. [Work supported by VA Rehabilitation Research and Development Service.]
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