The missing fundamental phenomenon in temporal vision
The missing fundamental phenomenon in temporal vision
复制标题
时间视觉中缺失的基本现象
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
Y. Ando
中科院分区：
文献类型：
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作者：
Kenji Fujii;S. Kita;T. Matsushima;Y. Ando
摘要 主观闪烁率是针对由五次谐波组成、不含基波成分的复合波形进行测量的。研究发现，观察者感知到基频的速率，尽管该频率的能量不包含在信号中。在听觉音高感觉中，这被称为缺失的基本现象，并且已知类似的发现也发生在空间视觉中。此外，即使在随机相位条件下，观察者也能感知到基频的闪烁率，其中基波分量的周期在实际波形中不清楚。结果表明，感知的闪烁率并不是从时间波形本身检测到的。用于提取信号中的这种周期性的一种可能的机制是真实时间波形的自相关函数。
Abstract Subjective flicker rates were measured for compound waveforms consisting of five harmonics without a fundamental component. It was found that observers perceived a rate at the fundamental frequency, although energy at this frequency was not included in the signals. In auditory pitch sensation this is called the missing fundamental phenomenon, and an analogous finding is known to occur in spatial vision. Moreover, observers perceived the flicker rates at the fundamental frequency even in the random-phase conditions, in which the period of the fundamental component is unclear in the real waveforms. The results indicate that the perceived flicker rates are not detected from the temporal waveforms per se. One possible mechanism for extracting such a periodicity in the signal is an autocorrelation function to the real temporal waveforms.