Interpolation filter of cascaded integrator-comb type

Details Interpolation filter of cascaded integrator-comb type Interpolation filter of cascaded integrator-comb type

1989-10-25

1991-08-27

Shaw, Dale M.

Boots, shoes, and leggings

36472417, G06F 1531

Patent

active

050439332

ABSTRACT:
This interpolative filter comprising N differentiating stages (4A-4N) constituting a section of low sampling frequency and N integrating stages (5A-5N) constituting a section of high sampling frequency is characterized in that is further comprises modulators (7A-7N) which are inserted into the string of integrators and which are intended to eliminate the increasing of the number of bits of the signal at each integration stage, and in that the said integrators are each included in a differentiation loop.

REFERENCES:
patent: 4302631 (1981-11-01), Shenoi et al.
patent: 4833717 (1989-05-01), Nakamura et al.
patent: 4864526 (1989-09-01), Dyer
Hogenauer, E., "An Economical Class of Digital Filters for Decimation and Interpolation", IEEE Trans. On Acoustics, Speech, and Signal Processing, vol. ASSP-29, #2, pp. 155-162, Apr. 1987.
Chu et al., "Multirate Filter Designs Using Comb Filters", IEEE Trans. on Circuits and Systems, vol. CAS-31, #11, pp. 913-923, Nov. 1984.
Hogenauer, E., "A Class of Digital Filters for Decimation and Interpolation", ICASSP 80 Proceedings, 4/9-4/11/80, pp. 271-274.

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