### Abstract

A new adaptive control algorithm in the frequency domain was propose. This frequency domain approach is an alternative to the ordinary filtered x least mean squares (LMS) algorithm in the time domain. A transfer characteristic of an acoustic path is identified adaptively in the frequency domain using the fast Fourier transform (FFT). The real time control of the noise reduction in an L formed duct model was carried out. A digital signal processor and a personal computer were used for the active noise control. The maximum noise reduction level of about 30 dB and the average reduction level of about 7 dB were obtained through the experiment. As a result, it was shown that this frequency domain adaptive algorithm has faster convergence compared to the ordinary filtered x LMS algorithm.

Original language | English |
---|---|

Pages (from-to) | 1397-1402 |

Number of pages | 6 |

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

Volume | 62 |

Issue number | 596 |

DOIs | |

Publication status | Published - Jan 1 1996 |

Externally published | Yes |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering

### Cite this

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

*62*(596), 1397-1402. https://doi.org/10.1299/kikaic.62.1397

**Frequency domain adaptive algorithm for active noise control (2nd report, Investigation with an experimental duct model).** / Kijimoto, Shinya; Shimojima, Hiroshi; Shibahara, Akihiro.

Research output: Contribution to journal › Article

*Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C*, vol. 62, no. 596, pp. 1397-1402. https://doi.org/10.1299/kikaic.62.1397

}

TY - JOUR

T1 - Frequency domain adaptive algorithm for active noise control (2nd report, Investigation with an experimental duct model)

AU - Kijimoto, Shinya

AU - Shimojima, Hiroshi

AU - Shibahara, Akihiro

PY - 1996/1/1

Y1 - 1996/1/1

N2 - A new adaptive control algorithm in the frequency domain was propose. This frequency domain approach is an alternative to the ordinary filtered x least mean squares (LMS) algorithm in the time domain. A transfer characteristic of an acoustic path is identified adaptively in the frequency domain using the fast Fourier transform (FFT). The real time control of the noise reduction in an L formed duct model was carried out. A digital signal processor and a personal computer were used for the active noise control. The maximum noise reduction level of about 30 dB and the average reduction level of about 7 dB were obtained through the experiment. As a result, it was shown that this frequency domain adaptive algorithm has faster convergence compared to the ordinary filtered x LMS algorithm.

AB - A new adaptive control algorithm in the frequency domain was propose. This frequency domain approach is an alternative to the ordinary filtered x least mean squares (LMS) algorithm in the time domain. A transfer characteristic of an acoustic path is identified adaptively in the frequency domain using the fast Fourier transform (FFT). The real time control of the noise reduction in an L formed duct model was carried out. A digital signal processor and a personal computer were used for the active noise control. The maximum noise reduction level of about 30 dB and the average reduction level of about 7 dB were obtained through the experiment. As a result, it was shown that this frequency domain adaptive algorithm has faster convergence compared to the ordinary filtered x LMS algorithm.

UR - http://www.scopus.com/inward/record.url?scp=0030120777&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030120777&partnerID=8YFLogxK

U2 - 10.1299/kikaic.62.1397

DO - 10.1299/kikaic.62.1397

M3 - Article

AN - SCOPUS:0030120777

VL - 62

SP - 1397

EP - 1402

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

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

SN - 0387-5024

IS - 596

ER -