Howling Cancellation for Active Noise Control with Two Sound Sources

Shinya Kijimoto; Hideo Tanaka; Yoichi Kanemitsu; Koichi Matsuda

doi:10.1299/kikaic.67.948

Howling Cancellation for Active Noise Control with Two Sound Sources

Shinya Kijimoto, Hideo Tanaka, Yoichi Kanemitsu, Koichi Matsuda

Dynamics of Mechanical Systems

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

In the active noise control, a transfer characteristics of an acoustic feedback path has a considerable influence on the stability of the control system. When an acoustic system has a feedback path, the control system often causes unstable behavior called howling. An approach to prevent the howling named directional control sound source (DCSS) is investigated and compared with an ordinary approach (howling canceller) in this paper. This DSCC is composed of two sound sources and a finite impulse response (FIR) filter. Active noise control using the filtered-x LMS (Least-Mean-Square) algorithm is carried out in an L-formed duct model. It is shown that the DCSS approaches prevented the howling effectivery through the experiment.

Original language	English
Pages (from-to)	948-953
Number of pages	6
Journal	Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume	67
Issue number	656
DOIs	https://doi.org/10.1299/kikaic.67.948
Publication status	Published - 2001

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

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AU - Kijimoto, Shinya

AU - Tanaka, Hideo

AU - Kanemitsu, Yoichi

AU - Matsuda, Koichi

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AB - In the active noise control, a transfer characteristics of an acoustic feedback path has a considerable influence on the stability of the control system. When an acoustic system has a feedback path, the control system often causes unstable behavior called howling. An approach to prevent the howling named directional control sound source (DCSS) is investigated and compared with an ordinary approach (howling canceller) in this paper. This DSCC is composed of two sound sources and a finite impulse response (FIR) filter. Active noise control using the filtered-x LMS (Least-Mean-Square) algorithm is carried out in an L-formed duct model. It is shown that the DCSS approaches prevented the howling effectivery through the experiment.

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JO - Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C

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Howling Cancellation for Active Noise Control with Two Sound Sources

Abstract

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