Sampling frequency converter

Details Sampling frequency converter Sampling frequency converter

1993-09-14

1995-09-26

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

Data rate conversion

3647241, H03M 700

Patent

active

054537410

ABSTRACT:
A sampling frequency converter of a compact size a for converting input data sampled at a sampling frequency of M=F * m.sub.1 * m.sub.2, . . . , * m.sub.k * m.sub.k+1 (m.sub.1, m.sub.2, . . . , m.sub.k, m.sub.k+1 are positive integers) into data sampled at a sampling frequency of N=F * n.sub.1 * n.sub.2, . . . , * n.sub.k (n.sub.1, n.sub.2, . . . , n.sub.k are positive integers). The converter includes a serial circuit of cascaded n stages of over-sampling filters Vi for over-sampling the input data by an n.sub.i -fold (i=1, 2, . . . , k) and down-sampling filters Wi for down-sampling the outputs of the over-sampling filters by an m.sub.i -fold, and a down-sampling filter W.sub.k+1 for down-sampling an output of the down-sampling filter at the stage k by an m.sub.k+1 -fold.

REFERENCES:
patent: 5126737 (1992-06-01), Torii
patent: 5191334 (1993-03-01), Yasuda
International Journal of Electronics, vol. 71, No. 6, Dec. 1991, London, GB, pp. 939-949, X000275090, R. Aboul-Hosn et al., "Multirate Techniques In Narrow Band Fir Filters".

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