TY - GEN
T1 - Hybrid active noise barrier with sound masking
AU - Wang, Xun
AU - Koba, Yosuke
AU - Ishikawa, Satoshi
AU - Kijimoto, Shinya
PY - 2014/1/1
Y1 - 2014/1/1
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84923592330
T3 - INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control
BT - INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering
A2 - Davy, John
A2 - Burgess, Marion
A2 - Don, Charles
A2 - Dowsett, Liz
A2 - McMinn, Terry
A2 - Broner, Norm
PB - Australian Acoustical Society
T2 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
Y2 - 16 November 2014 through 19 November 2014
ER -