Results of a computer simulation scheme for active noise reduction
Kang K. Yen, Vijay R. Raman, Osama Ashraf Mohammed, Kurt S. Ramdin · The Journal of the Acoustical Society of America · 1989
This paper presents the results of a computer simulation scheme for active noise minimization in a random noise-canceling headphone. The noise-canceling algorithm was developed in a separate paper by these authors. The performance of the noise-canceling algorithm has been tested via digital simulation of the actual noise field distributions within the ear canal. Farfield conditions have been assumed by the modeling environmental noise field to be due to sources far from the cancellation headset. The ear is initially modeled as an axisymmetric pipe, and the resulting field is calculated as a function of the location of noise canceling sources. The results proved helpful in determining the appropriate locations of the noice-canceling sources in order to achieve maximum noise energy reduction at a predetermined point in the pipe. [Project supported by the Florida High Technology and Industry Council.]