ISCA Archive Eurospeech 1997
ISCA Archive Eurospeech 1997

Data-driven design of RASTA-like filters

Sarel van Vuuren, Hynek Hermansky

We describe use of Linear Discriminant Analysis (LDA) for data-driven automatic design of RASTA-like filters. The LDA applied to rather long segments of time trajectories of critical-band energies yields FIR filters to be applied to these time trajectories in the feature extraction module. Frequency responses of the first three discriminant vectors are in principle consistent with the ad hoc designed RASTA, delta and double-delta filters. On a connected digit task the new features outperform the original RASTA processing.

doi: 10.21437/Eurospeech.1997-151

Cite as: Vuuren, S.v., Hermansky, H. (1997) Data-driven design of RASTA-like filters. Proc. 5th European Conference on Speech Communication and Technology (Eurospeech 1997), 409-412, doi: 10.21437/Eurospeech.1997-151

  author={Sarel van Vuuren and Hynek Hermansky},
  title={{Data-driven design of RASTA-like filters}},
  booktitle={Proc. 5th European Conference on Speech Communication and Technology (Eurospeech 1997)},