Digital signal sampling rate conversion method by using sampling period which is integer multiple of length of polynomial elements of filter impulse response

摘要

A first digital signal x(kT1) with a sampling rate f1=1/T1 is converted into a second digital signal y(mT2) with a sampling rate f2=1/T2 with filtering provided by a filter whose impulse response h(t) can be built up from polynomial elements of equal length (Delta). The sampling period T2 of the output signal is an integer multiple of the length (Delta) of the polynomial elements of the impulse response. An Independent claim is also included for a sampling rate conversion circuit.