Active Noise Control Effect On Penetration Of Urban Noise From 3-D Spaces
Into Enclosures
Author(s)
G. Rosenhouse & 0. Findling - Eldar
Abstract
Active noise control effect on penetration of
urban noise from 3-D spaces into enclosures
G. Rosenhouse ") & 0. Findling - ~ldar("
("I Faculty of Civil Engineering - Technion, Haifa, 32000, Israel
Abstract
A new acoustic model of attenuation of environmental noise by an electroacoustic
active noise control (ANC) unit is suggested here. It analyses noise
escape from an enclosure to the environment through openings and vice versa, in
the cases where the ANC is on and off. The simulation is based on solving the
sound field by BEM. The BEM has to satisfy specific boundary conditions over
a rigid boundary and the opening (window). The particle velocity defines the
primary (original) source and the secondary sources (of the ANC). The
sensitivity of the system were examined, and the positions of the error sensors of
the ANC at the opening zone were optimised in order to improve the
performance of the system. Also, the locations and complex amplitudes of the
secondary sources were obtained by satisfyin
Keywords
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