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Stephan Grashey

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Featured researches published by Stephan Grashey.

2006 IEEE Odyssey - The Speaker and Language Recognition Workshop | 2006

Using a Vocal Tract Length Related Parameter for Speaker Recognition

Stephan Grashey; Christian GeiBler

The use of a parameter related to the vocal tract length of humans is investigated for a speaker recognition system. This parameter is a warping factor for the frequency spectrum and it was determined from a vocal tract length normalization module of an automatic speech recognizer. A decision fusion approach WHS used to combine the output of the stand-alone speaker verification with a separate classifier for the warping factor. The fused system exhibits a relative improvement of 23% compared to the stand-alone system

Archive | 2002

Continuous authentication of the identity of a speaker

Stephan Grashey; Wolfgang Kuepper

Archive | 2000

Verifying a speaker using random combinations of speaker's previously-supplied syllable units

Stephan Grashey; Wolfgang Kuepper

Archive | 2009

Verfahren zur Klassifizierung und Entfernung unerwünschter Anteile aus einer Äußerung bei einer Spracherkennung

Stephan Grashey; Klaus Lukas

Archive | 2008

Speaker identification method for use during speech recognition in infotainment system in car, involves assigning user model to associated entry, extracting characteristics from linguistic expression of user and selecting one entry

Stephan Grashey; Klaus Lukas

Archive | 2008

Speaker identification method, involves determining statistical distribution of extracted portions of speech signal, and determining threshold value for classification of speaker by using determined statistical distribution

Stephan Grashey

Odyssey | 2004

Evaluation of a small-footprint text and language independent speaker recognition system on forensic data.

Suhadi; Stephan Grashey; Sorel Stan; Tim Fingscheidt

Archive | 2003

Voice activity detection based on unsupervised trained clustering

Stephan Grashey

Archive | 2002

Continuous speaker authentication

Stephan Grashey; Wolfgang Kuepper

Archive | 2000

Verfahren und anordnung zur verifikation eines sprechers anhand eines rechners

Wolfgang A. Küpper; Stephan Grashey

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Wolfgang Kuepper

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Wolfgang A. Küpper

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Bernt Andrassy

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Christian GeiBler

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Klaus Lukas

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Bernhard Dipl Ing Littel

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Georg Stemmer

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Hans-Ulrich Block

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Petra Witschel

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Sorel Stan

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