Davies-Venn Evelyn, Souza Pamela, Fabry David
University of Washington, Seattle 98105, USA.
J Am Acad Audiol. 2007 Sep;18(8):688-99. doi: 10.3766/jaaa.18.8.6.
This study evaluated quality ratings for speech and music stimuli processed using peak clipping (PC), compression limiting (CL), and wide-dynamic range compression (WDRC) hearing aid circuitry. Eighteen listeners with mild-to-moderate hearing loss were binaurally fitted with behind-the-ear (BTE) hearing aids and instructed to rate the quality of speech under various conditions in quiet and noise and two genres of music. Results for speech revealed a slight preference for WDRC at 80 dB SPL, and equivalent ratings for the three circuits under all other listening conditions. Music ratings revealed a marginally significant preference for WDRC and a preference for classical over popular music. For music, judgments on pleasantness were the most influential on overall circuit preference.
本研究评估了使用削峰（PC）、压缩限制（CL）和宽动态范围压缩（WDRC）助听器电路处理的语音和音乐刺激的质量评级。18名轻度至中度听力损失的受试者双耳佩戴耳背式（BTE）助听器，并被要求对安静和噪声环境下各种条件下的语音质量以及两种音乐类型进行评级。语音测试结果显示，在80 dB声压级时，受试者对WDRC稍有偏好，在所有其他聆听条件下，三种电路的评级相当。音乐评级显示，受试者对WDRC有微弱的显著偏好，且对古典音乐的偏好高于流行音乐。对于音乐而言，愉悦度判断对整体电路偏好的影响最大。
