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Linear-Phase Digital Audio Tone Control Using Multiplication-Free FIR Filter

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A new linear-phase FIR filter system for digital audio tone control applications is presented. The system is based on the multiplication-free fourth-order low-pass FIR filter. The arithmetic complexity of the system is very low. It only needs 24 summation operations per sample.

JAES Volume 41 Issue 10 pp. 791-794; October 1993
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AES - Audio Engineering Society