Sampling frequency converter

Details Sampling frequency converter Sampling frequency converter

1981-10-13

1984-09-18

Shaw, Gareth D.

Boots, shoes, and leggings

328155, G06F 100

Patent

active

044727852

ABSTRACT:
A sampling frequency converter for converting a first signal sampled at a first sampling frequency f1 into a second signal sampled at a second sampling frequency f2 comprising an interpolation device supplied with the first signal, for inserting L-1 zeros (L is an integer) for every sampling time, a filter circuit for attenuating a frequency component over a frequency f/2 (f is a frequency) within an output signal of said interpolation device, where the filter circuit has a series circuit consisting of a finite impulse response digital filter and an infinite impulse response digital filter, and the frequency f is equal to the first sampling frequency f1 when f1<f2 and equal to the second sampling frequency f2 when f1>f2, and a decimation device for extracting every M-th (M is an integer) output signal of the filter circuit, to produce said second signal.

REFERENCES:
patent: 3997772 (1976-12-01), Crochiere et al.

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