Apparatus for filtering a signal utilizing recursion and decimat

Details Apparatus for filtering a signal utilizing recursion and decimat Apparatus for filtering a signal utilizing recursion and decimat

1998-11-23

2000-01-25

Mai, Tan V.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

708313, 708303, G06F 1710, G06F 1717

Patent

active

060187549

ABSTRACT:
Digital filter bank device that operates in a frequency-time hierarchically arranged, recursively fed back scheme based on the concept of decimation of a multi-speed-rate-operated system. The digital filter bank device operates in accordance with the computational requirement of summation of products for generating a filter output signal, and the computations are performed according to a software scheme based on a distributed arithmetic algorithm. The use of minimum hardware is enabled by a time-multiplexed scheme for both the implementation of the decimation and the distributed arithmetic principles of signal processing. The use of such a digital filter bank device results in a digital filter hardware architecture that has a significantly reduced semiconductor device die surface area.

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