HUT ACOUSTICS LAB
FAMBAC PROJECT



PERSONNEL

SHORT INFO

The project started in summer 1995 and was at the begining financiated by The Foundation for Finnish Inventions. Later the main supporter has been The Academy of Finland. New extension in the project starts in spring-98. This part is financiated by Tekes (Technology Development Centre) and two Finnish companies.

MAIN R&D DIRECTIONS

The general goal is to study and test perceptually motivated time-frequency methods and techniques for audio coding. Our main interest is to develop and apply frequency warping technigues. FAM and FAMlet classes have provided promising tools and theoretical background for these new developments.


Topics of Basic Research

On the basic research level a central problem has been computationally effective algorithms for FAMlet transform able to produce good approximations for any type of frequency warping. Also effective algorithms are needed for auditory filterbank and spectrogram computation and warped autocorrelation computation for warped linear prediction (WLP). During fall-96 and spring-97 a novel block recursive warping method was developed. A novel idea of block recursive FAMlet transform combined with Fourier transform to form a block recursive auditory filterbank is published in EUROSPEECH'97. (more about basic research)
Applied Research and Developments


This URL: http://www.acoustics.hut.fi/~unski/FAMbac.html
Last modified: 22.01.1998 Author: <Unto.Laine@hut.fi>