logo Idiap Research Institute        
 [BibTeX] [Marc21]
On the Combination of Auditory and Modulation Frequency Channels for ASR applications
Type of publication: Idiap-RR
Citation: valente:rr08-12
Number: Idiap-RR-12-2008
Year: 2008
Institution: IDIAP
Note: Published in Interspeech 2008
Abstract: This paper investigates the combination of evidence coming from different frequency channels obtained filtering the speech signal at different auditory and modulation frequencies. In our previous work \cite{icassp2008}, we showed that combination of classifiers trained on different ranges of {\it modulation} frequencies is more effective if performed in sequential (hierarchical) fashion. In this work we verify that combination of classifiers trained on different ranges of {\it auditory} frequencies is more effective if performed in parallel fashion. Furthermore we propose an architecture based on neural networks for combining evidence coming from different auditory-modulation frequency sub-bands that takes advantages of previous findings. This reduces the final WER by 6.2\% (from 45.8\% to 39.6\%) w.r.t the single classifier approach in a LVCSR task.
Userfields: ipdmembership={speech},
Keywords:
Projects Idiap
Authors Valente, Fabio
Hermansky, Hynek
Crossref by valente:Interspeech2:2008
Added by: [UNK]
Total mark: 0
Attachments
  • valente-idiap-rr-08-12.pdf
  • valente-idiap-rr-08-12.ps.gz
Notes