Department of Otorhinolaryngology, Eye, Ear, Nose & Throat Hospital, Fudan University, 83 Fenyang Road, Shanghai 200031, People's Republic of China.
J Acoust Soc Am. 2011 Dec;130(6):3562-5. doi: 10.1121/1.3658474.
Pitch, timbre, and/or timing cues may be used to stream and segregate competing musical melodies and instruments. In this study, melodic contour identification was measured in cochlear implant (CI) and normal-hearing (NH) listeners, with and without a competing masker; timing, pitch, and timbre cues were varied between the masker and target contour. NH performance was near-perfect across different conditions. CI performance was significantly poorer than that of NH listeners. While some CI subjects were able to use or combine timing, pitch and/or timbre cues, most were not, reflecting poor segregation due to poor spectral resolution.
音高、音色和/或时值提示可用于混合和分离竞争的音乐旋律和乐器。在本研究中，在有和没有竞争掩蔽的情况下，对人工耳蜗（CI）和正常听力（NH）的听众进行旋律轮廓识别测试；掩蔽和目标轮廓之间变化了时值、音高和音色提示。NH 在不同条件下的表现接近完美。CI 的表现明显比 NH 听众差。虽然一些 CI 受试者能够使用或结合时值、音高和/或音色提示，但大多数不能，这反映出由于光谱分辨率差导致的较差的分离。
