A new linear-phase three-way filter system for digital audio tone-control application is presented. Approximately 80% of its coefficient values are zero. The remaining nonzero coefficient values are 0.5 and 2.5. Thus the filter system is essentially multiplication free. When the high-frequency and low-frequency gain weightings are unity, the filter system acts as a pure delay producing no frequency response distortion.

Author: Lim, Yong C.
Affiliation: Department of Electrical Engineering, National University of Singapore, Singapore
JAES Volume 35 Issue 1/2 pp. 38-40; February 1987
Publication Date: February 1, 1987

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