Reassignment method: Difference between revisions

Revision as of 17:49, 9 August 2012

Revision as of 18:00, 9 August 2012

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of any member of Cohen's class

<ref name = "improving">

{{cite journal |author=F. Auger and P. Flandrin, ''|year=1995 | month=May |title=Improving the readability of time-frequency and

time-scale representations by the reassignment method'', |journal=IEEE Transactions on Signal Processing |volume=43 |issue=5 |pages=1068-1089 |publisher= |doi=10.1109/78.382394 |url= |accessdate= }}

</ref>

IEEE Transactions on Signal Processing, vol. 43, pp. 1068 – 1089, May 1995.</ref>

<ref>P. Flandrin, F. Auger, and E. Chassande-Mottin,

''Time-frequency reassignment: From principles to algorithms'',

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published by Kodera, Gendrin, and de Villedary under the

name of ''Modified Moving Window Method''

<ref>

<ref>K. Kodera, R. Gendrin, and C. de Villedary,

{{cite journal |author=K. Kodera, R. Gendrin, and C. de Villedary |year=1978 |title=Analysis of time-varying signals with small BT values |journal=IEEE Transactions on Acoustics, Speech and Signal Processing |volume=26 |issue=1 |pages=64 – 76 |month=Feb | publisher= |doi=10.1109/TASSP.1978.1163047 |url= |accessdate= }}

''Analysis of time-varying signals with small BT values'',

</ref>

IEEE Transactions on Acoustics, Speech and Signal Processing,

vol. ASSP-26, pp. 64 – 76, Feb. 1978.</ref>

Their technique enhances the resolution in time and

frequency of the classical Moving Window Method (equivalent

Line 271 ⟶ 270:

spectrum.

<ref name = "crossspectral">

{{cite journal |author=D. J. Nelson, ''|year=2001 |month=Nov |title=Cross-spectral methods for processing speech'', |journal=Journal of the Acoustical Society of America |volume=110 |issue=5 |pages=2575 – 2592 |publisher= |doi=10.1121/1.1402616 |url= |accessdate= }}

</ref>

Journal of the Acoustical Society of America, vol. 110, pp. 2575 – 2592, Nov. 2001.</ref>

It is easily shown that Nelson's

''cross spectral surfaces'' compute an approximation of the derivatives that