Attenuation Effects of Discrete Tone Using Adaptive Feedback Active Noise Control

Bibliographic Information

Other Title
  • 適応フィードバック能動騒音制御による離散周波数音の抑制
  • テキオウ フィードバック ノウドウ ソウオン セイギョ ニ ヨル リサン シュウハスウオン ノ ヨクセイ

Search this article

Abstract

The attenuation characteristics of a slit resonator that combined the adaptive feedback ANC system at a ventilation aperture of the package for leakage noise is investigated. The discrete tones radiated from an AC axial flow fan are controlled by DSP using Filtered-X Least Meane Square algorithm. The attenuation is found at the range of : 3dB-14dB with circular slit resonator, 2dB-15dB with elliptic slit resonator. Results of measurement show that the proposed system can achieve TNR (Tone to Noise Ratio) and PR (Prominence Ratio) under threshold effectively.

Journal

Citations (1)*help

See more

References(12)*help

See more

Details 詳細情報について

Report a problem

Back to top