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Complementary envelope estimation for frequency-modulated random signals
2013
2013 IEEE International Conference on Acoustics, Speech and Signal Processing
The Hilbert envelope is a well-known indicator for amplitude modulation in subband time series. However, frequency modulation estimators typically impose temporal smoothness constraints that limit their general use for stochastic signals. We introduce the complementary envelope as a direct indicator of stochastic phase coherence and frequency modulation. Rooted in the second-order statistics of randomly-phased sinusoids, the complementary envelope is distinct from the Hilbert envelope, and can
doi:10.1109/icassp.2013.6638687
dblp:conf/icassp/ClarkKA13
fatcat:atv25vwjm5h5lnhc7wfkgfavsa