Modified FIR filter with phase compensation technique to feedforward active noise controller design

Kuo Kai Shyu, Cheng Yuan Chang

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

In this paper, a finite-impulse response (FIR) filter with phase compensation is proposed to design the digital controller for active noise cancellation in ducts. This method can overcome the influence of delay effects, which arise from the analog devices, and then help to improve the ability of noise reduction. Moreover, all the control algorithms are implemented in a fixed-point-type digital signal processor that produces an antinoise signal to cancel noise in our experiments. Experiments are demonstrated in a polyvinyl chloride material circular duct. It is proved that, by using the FIR filter with phase compensation, the reduction of broadband noise is about 20 dB, and about 50 dB of narrowband noise. The system also provides the ability to cancel the noise with two harmonic components, like automobile noise.

Original languageEnglish
Pages (from-to)444-453
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Volume47
Issue number2
DOIs
StatePublished - 2000

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