{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T05:53:24Z","timestamp":1790402004580,"version":"4.1.0"},"reference-count":37,"publisher":"Acoustical Society of America (ASA)","issue":"1","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2001,7,1]]},"abstract":"<jats:p>A new method \u201csimultaneous inverse filtering and model matching\u201d (SIM) is proposed that allows one to calculate voice source measures without any user interaction. It is based on the discrete all-pole modeling (DAP) technique for inverse filtering (IF), which is modified to include a model of the glottal flow as integral part [LF model, Fant et al., STL-QPSR (Stockholm) 4\/1985, 1\u201313 (1986)]. As the correct LF parameters are initially unknown, they are estimated in an iterative procedure using multi-dimensional optimization techniques that are initialized according to the results of an exhaustive search. The error criteria applied reflect how well the IF is performed after the spectral contribution of the glottal flow has been removed. The resulting optimal LF parameter constellation serves as the basis to calculate 11 voice source measures. The performance was evaluated using synthesized signals and recordings of natural utterances. For the synthesized signals, the accuracy to reproduce the original parameters was high (correlations exceeding 0.88) for measures where the starting point of the glottal cycle did not enter explicitly. Errors were smaller compared to conventional estimation methods where the measures were estimated from the IF signal. The analysis of natural utterances indicates that problems still exist with regard to robustness, but that under advantageous conditions the open quotient, the speed quotient, the closing quotient, the parabolic spectral parameter, and the negative peak amplitude of the glottal flow derivative can indeed be determined automatically by the SIM method.<\/jats:p>","DOI":"10.1121\/1.1379076","type":"journal-article","created":{"date-parts":[[2002,7,26]],"date-time":"2002-07-26T14:09:06Z","timestamp":1027692546000},"page":"479-488","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":30,"title":["SIM\u2014simultaneous inverse filtering and matching of a glottal flow model for acoustic speech signals"],"prefix":"10.1121","volume":"110","author":[{"given":"Matthias","family":"Fr\u00f6hlich","sequence":"first","affiliation":[{"name":"Drittes Physikalisches Institut, Universit\u00e4t G\u00f6ttingen, B\u00fcrgerstr. 42-44, D-37073\u2009G\u00f6ttingen, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dirk","family":"Michaelis","sequence":"additional","affiliation":[{"name":"Drittes Physikalisches Institut, Universit\u00e4t G\u00f6ttingen, B\u00fcrgerstr. 42-44, D-37073\u2009G\u00f6ttingen, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hans Werner","family":"Strube","sequence":"additional","affiliation":[{"name":"Drittes Physikalisches Institut, Universit\u00e4t G\u00f6ttingen, B\u00fcrgerstr. 42-44, D-37073\u2009G\u00f6ttingen, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"231","reference":[{"key":"2023071401384152200_alk94"},{"key":"2023071401384152200_alk96","doi-asserted-by":"crossref","first-page":"240","DOI":"10.1159\/000266415","article-title":"A comparison of glottal voice source quantification parameters in breathy, normal and pressed phonation of female and male speakers","volume":"48","year":"1996","journal-title":"Folia Phoniatr. 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