[sdiy] Digital accumulator VCO core?

Brian Willoughby brianw at audiobanshee.com
Tue Feb 16 02:28:56 CET 2021


On Feb 15, 2021, at 14:09, Mike Bryant wrote:
> And you don't just use an FFT to do autotune, that's merely a starting point if you want to do it in real time, as it would be for a real time spectral gate.  Some of the best systems don't even use an FFT at all nowadays.

You would perhaps be surprised by how many algorithms use FFT behind the scenes, without making it obvious. Impulse-based convolution (incl. reverbs) use FFT to vastly reduce the CPU usage below the textbook convolution math.

... and of course autotune is more than just FFT. It's the extra stuff that can be expensive compared to FFT.

Brian Willoughby





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