Quiet Zone Design in Broadband Diffuse Fields
نویسنده
چکیده
In this paper design of quiet zones in broadband diffuse fields has been present by using the method of acoustic pressure minimization over various spaces and frequencies. The technique is squared acoustic pressure minimization. The theory and simulations of pressure minimization over space and frequency using two-channel and three-channel systems are presented. The work presented in this paper is the second part of the study and we focus on diffuse primary fields with two and three secondary sources. The first part of the study concerned with a plane wave primary field only. A constrained minimization of pressure is also introduced in this paper, to control pressure at various spaces and frequencies. The results show that a good attenuation is achieved at the microphone location or desired range over space and frequency using a two-channel system. However, a better performance could be achieved using a three-channel system.
منابع مشابه
Performance Evaluation of Active Systems Using the Novel Method of Designing Larger Quiet Zones in Diffuse Fields
This study evaluates the performance of quiet zones in broad-band diffuse fields using two and three channel systems. A novel method of designing zones of quiet has been proposed to obtain larger zones of quiet than are obtained with conventional methods. The principle of this new method is to maximize the area of the 10dB quiet zones over space and frequency in broad-band diffuse fields. This ...
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تاریخ انتشار 2009