Ninth International Conference on Spoken Language Processing

Pittsburgh, PA, USA
September 17-21, 2006

Discriminant Linear Processing of Time-Frequency Plane

Fabio Valente, Hynek Hermansky

IDIAP Research Institute, Switzerland

Extending previous works done on considerably smaller data sets, the paper studies linear discriminant analysis of about 30 hours of phoneme-labeled speech data in the time-frequency domain. Analysis is carried both independently in time and frequency and jointly. Data driven spectral basis show similar frequency sensitivity as human hearing. LDA-derived temporal FIR filters are consistent with temporal lateral inhibition. Considerable improvement is obtained using first temporal discriminant.

Full Paper

Bibliographic reference.  Valente, Fabio / Hermansky, Hynek (2006): "Discriminant linear processing of time-frequency plane", In INTERSPEECH-2006, paper 1300-Mon2BuP.2.