5th European Conference on Speech Communication and Technology

Rhodes, Greece
September 22-25, 1997

Critically Sampled PR Filterbanks of Nonuniform Resolution Based on Block Recursive FAMlet Transform

Unto K. Laine

Laboratory of Acoustics and Audio Signal Processing, Helsinki University of Technology, Espoo, Finland

A new block recursive algorithm is introduced for effective FAMlet transform implementation. When the Fourier transform is combined with the algorithm a nonuniform resolution filterbank is created. The algorithm allows to approximate frequency resolutions of any type, the ERB-rate scale included. The signals can be vector based critically down sampled which allows a perfect reconstruction.

Full Paper

Bibliographic reference.  Laine, Unto K. (1997): "Critically sampled PR filterbanks of nonuniform resolution based on block recursive FAMlet transform", In EUROSPEECH-1997, 697-700.