The simple algorithm of building nonrecursive digital filter for decimation purpose is described in this paper. The problem of decimation is rather often. The multichannel tunable filterring system is required to be built in our work. One of the simplest ways is a method, when a grid of filters uniformly set on interval from 0 to half sampling rate Fd, is created, and sample frequency itself changes by means of decimation of the source sequence, recorded with samle rate of F0. source sequence is to be passed throw low-frequancy shelf filter before undertaking decimation in order to avoid the imaging of the upper frequencies in lower area. The problem of decimation is simply to solve in case the nonrecursive filters are used. Though such filters are highly expensive on machine resource, the source sequence needs to be filtered only once per multichannel system building phase. So we may ignore the time of filter calculation and filtering of source sequence.
Cite as: Kornilov, A.U. (2004) The simple algorithm of building nonrecursive digital filter for decimation purpose. Proc. 9th Conference on Speech and Computer (SPECOM 2004), 210-211
@inproceedings{kornilov04b_specom,
author={Alexander U. Kornilov},
title={{The simple algorithm of building nonrecursive digital filter for decimation purpose}},
year=2004,
booktitle={Proc. 9th Conference on Speech and Computer (SPECOM 2004)},
pages={210--211}
}