Abstract
In the present multimedia systems the audio tone control unit is implemented in analogue form. We present an efficient FIR filter structure with low computational complexity for a digital audio tone control unit. The algorithm is successfully implemented in the TMS320C50 and TMS320C30 for CD-players and PC multimedia systems. The interfaces for parameter adjustment are also presented. Compared with the analogue form, the digital tone control unit has better performance and lower cost.
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