Investigation of a possible process identity between DRM and Linear Filtering

Sacha Krstulovi'c

IDIAP-RR 97-19, 1997

The classical analogy between linear filtering and acoustical filtering by tubes is applied in the non-classical case where the tubes are made of unequal-length sections (such as the DRM case). It is shown that the filtering process identity is substantially more complicated than in the case of equal-length sections. In particular, it prevents the use of the Levinson algorithm for inverting the filtering process and recovering the tube characteristics from sound alone.

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