Effects of Degree and Configuration of Hearing Loss on the Contribution of High- and Low-Frequency Speech Information to Bilateral Speech Understanding

摘要: OBJECTIVES The purpose of this study was to examine the effects degree and configuration hearing loss on use of, benefit from, information in amplified high- low-frequency speech presented background noise. DESIGN Sixty-two adults with a wide range sensorineural (5 115+ dB HL) participated study. To contribution different frequency regions, understanding noise assessed multiple low- high-pass filter conditions, as well band-pass (713 3534 Hz) wideband (143 8976 condition. increase audibility over range, were based each individual's loss. A stepwise linear regression approach used several factors (1) absolute performance condition (2) change addition components. RESULTS Results from analysis showed that strongest predictor for filtered materials. In addition, affected both severely low-pass extending high-frequency (3534 bandwidth. Specifically, individuals steeply sloping losses made better than similar thresholds but less contrast, given thresholds, flat received more bandwidth losses. CONCLUSIONS Consistent previous work, region generally decreases increases. However, loss, also affects ability regions. Except losses, providing amplification had either beneficial effect on, or did not significantly degrade, understanding. These findings highlight importance extended listeners when seeking maximize intelligibility.