Plyler Patrick N, Trine Timothy D, Blair Hill Ashley
Department of Audiology and Speech Pathology, University of Tennessee, Knoxville, Tennessee 37996, USA.
Int J Audiol. 2006 Jun;45(6):331-6. doi: 10.1080/14992020600582224.
The present study investigated the subjective evaluation of expansion time constants in single-channel wide dynamic range compression (WDRC) hearing instruments. Thirty participants utilized binaural WDRC hearing instruments for a two-week trial. Subjective evaluations were conducted by having each participant rate their satisfaction with the expansion time constant on a daily basis and by having each participant indicate their preferred expansion time constant following the completion of the two-week trial. Each change in expansion time constant significantly affected listener satisfaction; however, all time constants resulted in satisfactory performance. Of the users expressing a preference, 75% preferred fast-acting over slow-acting expansion. These findings suggest that dynamic expansion parameters play an important role in determining the effectiveness of the feature for a given listener.
本研究调查了单通道宽动态范围压缩（WDRC）助听器中扩展时间常数的主观评价。30名参与者使用双耳WDRC助听器进行了为期两周的试验。主观评价通过让每位参与者每天对其对扩展时间常数的满意度进行评分，以及在两周试验结束后让每位参与者指出其偏好的扩展时间常数来进行。扩展时间常数的每一次变化都显著影响听众满意度；然而，所有时间常数都带来了令人满意的表现。在表达偏好的用户中，75%更喜欢快速作用的扩展而非慢速作用的扩展。这些发现表明，动态扩展参数在确定该功能对特定听众的有效性方面起着重要作用。
