带通滤波对人工耳蜗使用者旋律轮廓识别的影响。
Effect of bandpass filtering on melodic contour identification by cochlear implant users.
机构信息
Department of Communication and Auditory Neuroscience, House Ear Institute, Los Angeles, California 90057, USA.
出版信息
J Acoust Soc Am. 2011 Feb;129(2):EL39-44. doi: 10.1121/1.3531708.
Melodic contour identification was measured in cochlear implant (CI) and normal-hearing (NH) subjects for piano samples processed by four bandpass filters: low (310-620 Hz), middle (620-2480 Hz), high (2480-4960 Hz), and full (310-4960 Hz). NH performance was near-perfect for all filter ranges and much higher than CI performance. The best mean CI performance was with the middle frequency range; performance was much better for some CI subjects with the middle rather than the full filter. These results suggest that acoustic filtering may reduce potential mismatches between fundamental frequencies and harmonic components thereby improving CI users' melodic pitch perception.
旋律轮廓识别在人工耳蜗（CI）和正常听力（NH）受试者中进行，针对经过四种带通滤波器处理的钢琴样本：低频（310-620 Hz）、中频（620-2480 Hz）、高频（2480-4960 Hz）和全频（310-4960 Hz）。NH 在所有滤波器范围内的表现近乎完美，远高于 CI 的表现。CI 的最佳平均表现是中频范围；对于一些 CI 受试者，中频滤波器的表现明显优于全频滤波器。这些结果表明，声学滤波可能会减少基频和谐波成分之间的潜在不匹配，从而改善 CI 用户的旋律音高感知。
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