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An inverse signal approach to computing the envelope of a real valued signal

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1 Author(s)
Kumaresan, R. ; Dept. of Electr. Eng., Rhode Island Univ., Kingston, RI, USA

We address the problem of estimating the envelope of a real valued signal, s(t) that is observed for a duration of T seconds. We model s(t) using a Fourier series, by considering periodic extensions of the signal. By using an analog of the auto-correlation method of linear prediction on the Fourier coefficients of s(t) the envelope of the signal is estimated without explicitly computing the analytic signal.

Published in:

Signal Processing Letters, IEEE  (Volume:5 ,  Issue: 10 )