Abstract
The effect of fast-acting compression on speech recognitionin fully modulated (FUM) noise in listeners with normaland impaired hearing was investigated in two experiments. We wanted to determine the relationships between the benefitfrom compression and some audiological factors.Furthermore, the sensitivity to changes in compressionparameters was also evaluated. The results showed thattwo-thirds of the listeners performed worse with fast-actingcompression than with linear processing. Normal-hearinglisteners showed the most benefit from compression. A significantrelationship was found between benefit from compressionand speech-to-noise ratio at threshold (SNRT) inslightly modulated (SM) noise. Pure-tone threshold wasfound to be a weak predictor of benefit from compression.No relationship was found between benefit from compressionand the release of masking for the FUM noise. Thevariability in the results across different compressionparameters was related to SNRT in SM noise. The resultssuggest an inverse relationship between benefit from compressionand the severity of the suprathreshold hearing loss.
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