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After summarizing several Time-Frequency Distributions (TFD), concretely the standard Short Time Fourier Transform (STFT), the Pseudo Wigner\u2013Ville Distribution (PWVD), reassignment and complex wavelets, a comparative study of the accuracy in the instantaneous frequency (IF) estimation is shown. The comparative study includes three different signal processing tools (based on the summarized TFD): the Time-Frequency Toolbox (TFTB) of Fran\u00e7ois Auger, the High Resolution Spectrographic Routines (HRSR) of Sean Fulop and the proposed CWAS algorithm. A set of eight synthetic signals have been analyzed using six different methods: the regular STFT spectrogram, the PWVD, their corresponding reassigned versions, the Nelson crossed spectrum method and finally the Complex Continuous Wavelet Transform (CCWT). Finally, two- and three-dimensional Time-Frequency representations of the IF provided by the CWAS algorithm are presented.<\/jats:p>","DOI":"10.1142\/s0219691314500301","type":"journal-article","created":{"date-parts":[[2014,2,7]],"date-time":"2014-02-07T11:39:21Z","timestamp":1391773161000},"page":"1450030","source":"Crossref","is-referenced-by-count":2,"title":["Instantaneous frequency estimation and representation of the audio signal through Complex Wavelet Additive Synthesis"],"prefix":"10.1142","volume":"12","author":[{"given":"Jes\u00fas","family":"Ponce de Le\u00f3n","sequence":"first","affiliation":[{"name":"Department of Electronic Engineering and Communications, University of Zaragoza, R\u00edo Ebro Campus, Mar\u00eda de Luna 1, 50018, Zaragoza, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 Ram\u00f3n","family":"Beltr\u00e1n","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering and Communications, University of Zaragoza, R\u00edo Ebro Campus, Mar\u00eda de Luna 1, 50018, Zaragoza, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fernando","family":"Beltr\u00e1n","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering and Communications, University of Zaragoza, R\u00edo Ebro Campus, Mar\u00eda de Luna 1, 50018, Zaragoza, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2014,5,26]]},"reference":[{"key":"rf1","first-page":"733","volume":"28","author":"Angelsen B. 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