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

Have you seen "The Artist"?  A wonderful film, about (plot spoiler alert) a silent film star in denial about the benefits that sound can bring to his beloved medium.  And at long last, the Filter Wizard leaps from the textual world of blogging and articles into the new "You ain't seen nuthin' yet!" world of the narrated educast:

http://www.eetimes.com/electrical-engineers/education-training/courses/4237731/Wizard-Filters-for-all-using-the-built-in-hardware-digital-filter-in-a-programmable-SoC

It's really too short a piece to carry any in-depth (or even in-shallow) technical perspective, but it was fun to do, and whetted my appetite for other forays into this format.  Let me know what you think!  best / Kendall

Go on, admit it, you've been gnawing your fingernails down to the quick, waiting for the resolution of this pair of FIR filter articles.  Well, gnawing time is over!  You can read the second part on

http://www.analog-eetimes.com/en/now-synthesize-your-fir-filters-using-high-school-algebra.html?cmp_id=71&news_id=222903141

and see just how easy it can be to make an FIR filter that has notches where you want them to be, not scattered randomly by some mystery filter design process.  Check out my 'null hypothesis'!  best / Kendall

Hello Filter fans!  Ever wondered what's going on behind the set of numbers that defines an FIR filter?  Well, you can read all about it - or rather, you can read half about it - in my latest Filter Wizard piece:

http://www.analog-eetimes.com/en/analyze-fir-filters-using-high-school-algebra.html?cmp_id=71&news_id=222903041

Dust off that high school algebra about polynomials and start digging!  The second part will be along in a few weeks' time!  best - Kendall

At last!  The first Component Pack for PSoC Creator 2.0 (which you really should be using if you haven't upgraded yet).  No code changes, just some great new components.  Main thing I'm excited about it the new Filter component, which now supports IIR filters, and custom coefficient entry.  It's had a lot of detail work done to it on the FIR side as well.  It's not the last word in filter design software - not enough time and resources to achieve that lofty goal  But it's pretty good in some respects - and your feedback can make it even better in future releases.  So, go get it, try it out, let me know the good and bad things about it.  best / Kendall