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More on waveform synthesis | Cypress Semiconductor

More on waveform synthesis

The second Filter Wizard article on waveform synthesis schemes for the DFB is up on EE Times Europe now: http://www.analog-eetimes.com/en/more-direct-waveform-synthesis-mr-chebychev-helps-out.html?cmp_id=71&news_id=222903800.  In the article I mention polynomial evaluation stuff in passing, before using an alternative method.  But for quite a few applications, the DFB can be a good engine for rapid calculation of polynomials using Horner's method.  Provided the error bounds imposed by 24bit fixed-point arithmetic are appropriate, this is way faster than doing it in a CPU.  The iterative method is reminiscent of FIR filter execution and leverages the addressing ability of the DFB hardware.  In the end, for the music synthesis task, I opted for... but why give it away - go check out the article!  best / Kendall

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