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A comparison of the energy operator and the Hilbert transform approach to signal and speech demodulation
1994
Signal Processing
The Hilbert transform together with Gabor's analytic signal provides a standard linear integral approach to estimate the amplitude envelope and instantaneous frequency of signals with a combined amplitude modulation (AM) and frequency modulation (FM) structure. A recent alternative approach uses a nonlinear differential 'energy' operator to track the energy required to generate an AM-FM signal and separate it into amplitude and frequency components. In this paper, we compare these two
doi:10.1016/0165-1684(94)90169-4
fatcat:lood4cltevdzrjt35zcp6ln2ka