Development of indoor hybrid active noise barrier

Xun Wang, Yosuke Koba, Satoshi Ishikawa, Shinya Kijimoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper develops an indoor active noise barrier (ANB) by using a hybrid active noise control (HB-ANC) system. The HB-ANC system reduces the noise diffracted from the top of the ANB and the noise propagated to the head position of the target person behind the ANB simultaneously to achieve higher noise attenuation. However, the waterbed effect of the feedback control part of the HB-ANC system will cause noise enhancement at some frequencies in the control area. In the paper, in order to solve this problem, a filter able to cancel the noise enhancement is integrated into the HB-ANC system. Then, the noise attenuation performance of the ANB under four sound field configurations is verified by simulations. The sound field configurations are set up to investigate how the diffraction from side of the ANB and the reflection influence the performance of the ANB. An experiment in the anechoic chamber is also conducted. The simulation and experiment results indicate that the low frequency noise can be reduced in a wide area behind the ANB, and at the head position of the person, the noise attenuation can be obtained within a wider frequency range, even for the sound fields where the diffraction from side and the reflection exist.

Original languageEnglish
Title of host publication22nd International Congress on Sound and Vibration, ICSV 2015
PublisherInternational Institute of Acoustics and Vibrations
ISBN (Electronic)9788888942483
Publication statusPublished - 2015
Event22nd International Congress on Sound and Vibration, ICSV 2015 - Florence, Italy
Duration: Jul 12 2015Jul 16 2015

Publication series

Name22nd International Congress on Sound and Vibration, ICSV 2015

Other

Other22nd International Congress on Sound and Vibration, ICSV 2015
CountryItaly
CityFlorence
Period7/12/157/16/15

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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