Multi-channel active noise cancellation using the DSP56001 (digital signal processor)

Stewart, R.W. and Duncan, R. and Weiss, S.; (1993) Multi-channel active noise cancellation using the DSP56001 (digital signal processor). In: 1993 IEEE International Conference on Acoustics, Speech, and Signal Processing. IEEE International Conference on Acoustics, Speech, and Signal Processing, 1 . IEEE, USA, pp. 185-188. ISBN 0780374029 (https://doi.org/10.1109/ICASSP.1993.319086)

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Abstract

The authors report on the performance of a portable active noise cancellation (ANC) system based around a PC hosted 20-MHz Motorola DSP56001 processor with a four-channel analog input/output (I/O) board connected to the real world via standard consumer audio components. The system will perform active noise cancellation over the frequency range of 65-500 Hz. Quantitative results are presented for the cancellation of single tone noise and of narrowband noise, and a measure of the ANC power spectrum is calculated for various parameters of the filtered-X LMS algorithm in different acoustic environments. Qualitative results based on human hearing perception of the attenuation of various narrowband and real world noise sources are also discussed.

ORCID iDs

Stewart, R.W. ORCID logoORCID: https://orcid.org/0000-0002-7779-8597, Duncan, R. and Weiss, S. ORCID logoORCID: https://orcid.org/0000-0002-3486-7206;