Dr. Steven Greenberg, ICSI, Berkeley, USA

Lecture
                                VORTRAG
                                *******

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
-------------------------------------------------------------------------

 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