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Lizenz
Report (Bericht) zugänglich unter
Pitch determination considering laryngealization effects in spoken dialogs
URN: urn:nbn:de:bsz:291-scidok-40699
URL: http://scidok.sulb.uni-saarland.de/volltexte/2011/4069/
Quelle:
(1994) Saarbrücken, 1994
pdf-Format:
Dokument 1.pdf (287 KB)
SWD-Schlagwörter:
Künstliche Intelligenz
Institut:
DFKI Deutsches Forschungszentrum für Künstliche Intelligenz
DDC-Sachgruppe:
Informatik
Dokumentart:
Report (Bericht)
Schriftenreihe:
Vm-Report / Verbmobil, Verbundvorhaben, [Deutsches Forschungszentrum für Künstliche Intelligenz]
Bandnummer:
33
Sprache:
Englisch
Erstellungsjahr:
1994
Publikationsdatum:
02.08.2011
Kurzfassung auf Englisch:
A frequent phenomenon in spoken dialogs of the information seeking type are short elliptic utterances whose mood (declarative or interrogative) can only be distinguished by intonation. The main acoustic evidence is conveyed by the fundamental frequency or Fo-contour. Many algorithms for Fo determination have been reported in the literature. A common problem are irregularities of speech known as "laryngealizations". This article describes an approach based on neural network techniques for the improved determination of fundamental frequency. First, an improved version of our neural network algorithm for reconstruction of the voice source signal (glottis signal) is presented. Second, the reconstructed voice source signal is used as input to another neural network distinguishing the three classes "voiceless", "voiced non-laryngealized", and "voiced laryngealized". Third, the results are used to improve an existing Fo algorithm. Results of this approach are presented and discussed in the context of the application in a spoken dialog system.
Lizenz:
Standard-Veröffentlichungsvertrag