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Showing papers on "Time–frequency analysis published in 1962"


Journal ArticleDOI
TL;DR: In this paper, it was shown that cochlear models of the Bekesy-type perform a time/frequency analysis in the sense of Gabor's Gabor analysis, i.e., the resolution depends upon spectral as well as temporal features of the applied signal.
Abstract: With respect to the present inquiry, cochlear analysis of an applied signal is considered to be given by the distribution of amplitudes along the partition. Since Ohm and Helmholtz, this form of resolution has been thought to correspond to the result of a straightforward Fourier analysis. The present paper intends to show that cochlear models of the Bekesy‐type perform a time/frequency analysis in the sense of Gabor. Along the existing time/frequency continuum, the response to sinusoidal signals represents one extreme, approaching a pure Fourier (frequency) analysis, and the response to transients the other extreme, approaching a pure time (waveform) analysis. Responses to all other signals arrange themselves between those two extremes; i.e., the resolution depends upon spectral as well as temporal features of the applied signal.With modulated signals, a process of demodulation occurs. Its origin was finally traced to hydrodynamic events which take place in the region of rapid phase changes of the traveli...

27 citations