The role of excitation-pattern, temporal-fine-structure, and envelope cues in the discrimination of complex tones
The role of excitation-pattern, temporal-fine-structure, and envelope cues in the discrimination of complex tones
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DOI：
10.1121/1.4864306
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发表时间：
2014-03-01
影响因子：
2.4
通讯作者：
Moore, Brian C. J.
中科院分区：
文献类型：
--
作者：
Jackson, Helen M.;Moore, Brian C. J.
带通滤波谐波(H)和非谐波(I)音调（通过将H音调的所有分量向上移动固定的Hz量而产生）的区分可以基于激励模式（EP）中波纹模式的移动或音调引起的时间精细结构的变化。将两种计算EP模型的预测结果与实测性能进行了比较。其中一个模型使用了由Glasberg和Moore[(1990)]指定带宽值的听觉滤波器。听到的。Res. 47, 103-138]，其中一个使用了两倍的滤镜。刺激变量包括通频带宽度、基频、通频带内最低分量的谐波阶数(N)、分量相位（余弦或随机）、信噪比（SNR）以及各分量在音调中电平的随机扰动。虽然EP模型正确地预测了相位的影响和数据中的一些趋势作为基频和N的函数，但两个模型都没有预测到性能随着通带宽度的增加而恶化，也没有预测到信噪比和电平扰动的影响。由此得出结论，对H和I音调的辨别并不仅仅基于EP线索的使用。(C) 2014年美国声学学会。
The discrimination of bandpass-filtered harmonic (H) from inharmonic (I) tones (produced by shifting all components of the H tones upwards by a fixed amount in Hz) could be based on shifts in the pattern of ripples in the excitation pattern (EP) or on changes in the temporal fine structure evoked by the tones. The predictions of two computational EP models were compared with measured performance. One model used auditory filters with bandwidth values specified by Glasberg and Moore [(1990). Hear. Res. 47, 103-138] and one used filters that were twice as sharp. Stimulus variables were passband width, fundamental frequency, harmonic rank (N) of the lowest component within the passband, component phase (cosine or random), signal-to-noise ratio (SNR), and random perturbation in level of each component in the tones. While the EP models correctly predicted the lack of an effect of phase and some of the trends in the data as a function of fundamental frequency and N, neither model predicted the worsening in performance with increasing passband width or the lack of effect of SNR and level perturbation. It is concluded that discrimination of the H and I tones is not based solely on the use of EP cues. (C) 2014 Acoustical Society of America.