对一种保留听觉空间线索的混合波束形成器的检查。
Examination of a hybrid beamformer that preserves auditory spatial cues.
作者信息
Best Virginia, Roverud Elin, Mason Christine R, Kidd Gerald
机构信息
Department of Speech, Language and Hearing Sciences, Boston University, Boston, Massachusetts 02215, USA
出版信息
J Acoust Soc Am. 2017 Oct;142(4):EL369. doi: 10.1121/1.5007279.
Abstract
A hearing-aid strategy that combines a beamforming microphone array in the high frequencies with natural binaural signals in the low frequencies was examined. This strategy attempts to balance the benefits of beamforming (improved signal-to-noise ratio) with the benefits of binaural listening (spatial awareness and location-based segregation). The crossover frequency was varied from 200 to 1200 Hz, and performance was compared to full-spectrum binaural and beamformer conditions. Speech intelligibility in the presence of noise or competing speech was measured in listeners with and without hearing loss. Results showed that the optimal crossover frequency depended on the listener and the nature of the interference.
摘要
研究了一种在高频结合波束形成麦克风阵列与低频自然双耳信号的助听器策略。该策略试图在波束形成的益处（提高信噪比）和双耳聆听的益处（空间感知和基于位置的分离）之间取得平衡。交叉频率在200至1200赫兹之间变化，并将性能与全频谱双耳和波束形成器条件进行比较。在有听力损失和无听力损失的听众中测量了存在噪声或竞争性言语时的言语可懂度。结果表明，最佳交叉频率取决于听众和干扰的性质。
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