VORTRAG
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Oesterreichisches Forschungsinstitut fuer Artificial Intelligence(OeFAI)
Freyung 6/6, A-1010 Wien
Tel.: +43-1-53361120, Fax: +43-1-5336112-77, Email: sec@oefai.at
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Dr. Steven Greenberg
International Computer Science Institute, Berkeley
A MULTI-TIER THEORETICAL FRAMEWORK FOR
UNDERSTANDING SPOKEN LANGUAGE
Spoken language is often viewed merely as sequences of words and
phonemes. The listener's task is one of decoding the speech signal into
its constituent elements derived from spectral decomposition of the
acoustic signal. However, under acoustic interference, spectral
decomposition is particularly challenging. Future-generation speech
separation methods are likely to utilize a more comprehensive set of
representational approaches than merely decoding words and phonemes.
This presentation outlines a multi-tier theory of spoken language in
which utterances are composed not only of words and phones, but
also syllables, articulatory-acoustic features and (most importantly)
prosemes, encapsulating the prosodic pattern in terms of prominence
and accent. This multi-tier framework portrays pronunciation variation
and the phonetic micro-structure of the utterance with far greater
precision than the conventional lexico-phonetic approach, and thereby
offers the prospect of improving machine-based recognition and
separation systems in the future.
Zeit: Donnerstag, 21. Oktober 2004, 18:00 Uhr pktl.
Ort: Oesterreichisches Forschungsinstitut
fuer Artificial Intelligence
FREYUNG 6/6, 3. Stock, 1010 Wien.
OESTERREICHISCHES FORSCHUNGSINSTITUT
FUER ARTIFICIAL INTELLIGENCE
o.Univ.-Prof. Ing. Dr. Robert Trappl