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Computing the Instantaneous Frequency for AN ECG Signal

Author(s): Ferenc – Emil MÓZES | János SZALAI

Journal: Scientific Bulletin of the ''Petru Maior" University of Tîrgu Mureș
ISSN 1841-9267

Volume: 9 (XXVI);
Issue: 2;
Start page: 28;
Date: 2012;
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Keywords: empirical mode decomposition | analytical signal | Hilbert transform | AM-FM decomposition | instantaneous frequency

Physical phenomena have non-stationary nature that cannot be analyzed by conventional numerical methods. The Hilbert-Huang transform is a relatively new way to look at nonstationary signals by introducing the new concept of instantaneous frequency. This paper presents some remarks on how to compute the instantaneous frequency of a nonstationary signal, by the means of the Hilbert-Huang transform and with the empirical AM-FM decomposition.
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