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The shape of low excursions of the envelope of a signal plus noise

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1 Author(s)
Blachman, Nelson M. ; 33 Linda Ave., Oakland, CA, USA

Like low excursions of the envelope of narrowband noise, those of the sum of a signal plus narrowband noise are hyperbolic in shape if the signal-to-noise ratio r is not high. When r≫1, low excursions of the envelope are hyperbolic if the signal is frequency-modulated but have a quartic shape with one or two minima if it is not. This article illuminates various aspects of FM clicks

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Information Theory, IEEE Transactions on  (Volume:44 ,  Issue: 2 )