Fractional Distortion Pairs in the Cochlea
作者:
J. R. Boston,
Ruth G. Robbins,
Peter Dallos,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1972)
卷期:
Volume 52,
issue 2B
页码: 530-535
ISSN:0001-4966
年代: 1972
DOI:10.1121/1.1913141
出版商: Acoustical Society of America
数据来源: AIP
摘要:
Experiments that were designed to investigate the properties of a peculiar type of distortion that has been observed in the cochlea at high excitation intensities are described. The pairs consist of two components with frequencies that are equally spaced about one‐half the excitation frequency and that sum to the excitation frequency. Pairs centered on odd‐harmonics of one‐half the excitation frequency were also observed. The pairs exhibit a threshold of appearance, their frequencies can drift with time, and at excitation intensities well above threshold the pairs develop into noisy bands instead of remaining as discrete frequency components. Distortion pairs with similar properties were observed in five different species of the order Rodentia. An analogy between the behavior of the pairs with increasing excitation intensity and the development of turbulence in the boundary layer over a flat plate is discussed. The turbulence arises from an instability in the flow, and it is suggested that the cochlear distortion pairs develop from a similar instability in the cochlear flow.
点击下载:
PDF
(682KB)
返 回