年轻正常听力人群的光谱调制传递函数分布。
Distribution of spectral modulation transfer functions in a young, normal-hearing population.
机构信息
Department of Communication Sciences and Disorders, University of South Florida, 4202 East Fowler Avenue, PCD 1017, Tampa, Florida 32620, USA.
出版信息
J Acoust Soc Am. 2018 Jan;143(1):306. doi: 10.1121/1.5020787.
Spectral modulation transfer functions (SMTFs) were measured in 49 young (18-35 years of age) normal-hearing listeners. Noise carriers spanned six octaves from 200 to 12 800 Hz. Sinusoidal (on a log-amplitude scale) spectral modulation with random starting phase was superimposed on the carrier at spectral modulation frequencies of 0.25, 0.5, 1.0, 2.0, 4.0, and 8.0 cycles/octave. Modulation detection thresholds (in dB) yielded SMTFs that were bandpass in nature, consistent with previous investigations reporting data for only a few subjects. Thresholds were notably consistent across subjects despite minimal practice. Population statistics are reported that may serve as reference data for future studies.
在 49 名年轻（18-35 岁）听力正常的听众中测量了光谱调制传递函数（SMTF）。噪声载波跨越六个八度，频率范围从 200 到 12800 Hz。在载波上叠加了正弦（对数幅度刻度）光谱调制，随机起始相位，光谱调制频率为 0.25、0.5、1.0、2.0、4.0 和 8.0 个倍频程/倍频程。调制检测阈值（以 dB 为单位）得出的 SMTF 呈带通特性，与之前仅报告少数受试者数据的研究结果一致。尽管练习很少，但阈值在受试者之间非常一致。报告了群体统计数据，可为未来的研究提供参考数据。
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