Hybrid active noise barrier with sound masking

Xun Wang, Yosuke Koba, Satoshi Ishikawa, Shinya Kijimoto

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

1 Citation (Scopus)

Abstract

In this paper, a hybrid active noise barrier (ANB) with sound masking capability is considered. To protect the speech privacy, several sound masking techniques have been developed. However, these sound masking techniques based on the superposition of the masker and original sound will lead to increase in the loudness of the sound after masking. Against this problem, this paper proposes a soundproof system which combines an ANB with a sound masking system. The ANB applies a new type of hybrid active noise control (ANC) system, which can reduce the noise diffraction and the noise propagated to the ear positions of the people behind the ANB simultaneously, to attenuate the conversation sound. Consequently, the required volume of the masker sound will decrease because of the smaller loudness of the original conversation sound in the control area. The sound masking system applies a method which can generate masker based on the frequency properties of the original sound. Several simulations are carried out to investigate the sound attenuation and sound masking performance of this system, and the results show that comparing with the traditional sound masking system, the proposed system needs smaller masker sound to achieve the sound masking effect.

Original languageEnglish
Title of host publicationINTERNOISE 2014 - 43rd International Congress on Noise Control Engineering
Subtitle of host publicationImproving the World Through Noise Control
PublisherAustralian Acoustical Society
ISBN (Electronic)9780909882037
Publication statusPublished - 2014
Event43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 - Melbourne, Australia
Duration: Nov 16 2014Nov 19 2014

Other

Other43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
CountryAustralia
CityMelbourne
Period11/16/1411/19/14

Fingerprint

masking
acoustics
conversation
loudness
privacy
ear

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

Wang, X., Koba, Y., Ishikawa, S., & Kijimoto, S. (2014). Hybrid active noise barrier with sound masking. In INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control Australian Acoustical Society.

Hybrid active noise barrier with sound masking. / Wang, Xun; Koba, Yosuke; Ishikawa, Satoshi; Kijimoto, Shinya.

INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society, 2014.

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

Wang, X, Koba, Y, Ishikawa, S & Kijimoto, S 2014, Hybrid active noise barrier with sound masking. in INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society, 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014, Melbourne, Australia, 11/16/14.
Wang X, Koba Y, Ishikawa S, Kijimoto S. Hybrid active noise barrier with sound masking. In INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society. 2014
Wang, Xun ; Koba, Yosuke ; Ishikawa, Satoshi ; Kijimoto, Shinya. / Hybrid active noise barrier with sound masking. INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society, 2014.
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