Finite impulse response filter

Details Finite impulse response filter Finite impulse response filter

1992-08-13

1994-03-22

Nguyen, Long T.

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G06F 1531

Patent

active

052970698

ABSTRACT:
Output data points of a digital FIR filter are calculated by storing input data points in an addressable memory and accessing the addressable memory to supply a new input data point exactly once for each output data point after a first output data point and storing each input data point in a first recirculating memory for so long as that input data point is needed to calculate a next output data point. The input data points stored in the first recirculating memory are used to calculate output data points. Furthermore, coefficients are stored in a second recirculating memory and are used to calculate the output data points. As a result, only one memory access is required per output data point.

REFERENCES:
patent: 4080660 (1978-03-01), Constant
patent: 5153846 (1992-10-01), Rao

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