Abstract
This paper details a finite‐element computer simulation scheme of an axis‐symmetric physical setup of an active noise canceling headset. The results of this simulation show the distribution of sound‐pressure levels inside the ear canal. Two‐dimensional simulations of an axis‐symmetric configuration of the ear cup were carried out. A point source was used to cancel out the noise. From these simulations it can be concluded that the noise inside the ear canal can be reduced. The amount of reduction depends on the strength and phase of the canceling source. On the other hand, a point source is not a practical device. To overcome this problem, new structures for speakers have to be created and simulated to check if their radiation is in accordance with that of practical devices. An algorithm proposed earlier by these authors for the estimation of the SPL noise reduction that can be accomplished inside the ear canal has been added. [Work supported by the Florida High Technology and Industry Council.]
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