MicroSquirt.com read only forum (Jan.15,2018)

All true. Here are couple of links thet have FFT software.
http://www.sigview.com/
http://www.qsl.net/dl4yhf/spectra1.html

so the bosch one doesnt require power then? cool! I'll have to get one and start experimenting with it. I know for the dodge knock sensor on the 2.2L/2.5L turbo cars, the ...

thats what I figured. Thanks. :)

now here is the new task that I have to get figured out... how I want to measure the knock to get the exact frequency. I know that I can easily bolt a bosch sensor to my engine where I plan to mount it in the end and then free rev the engine to 3-4krpms and advance ...

KnocksenseMS comes tuned to have maximum sensitivity to knock frequency for your particular cylinder bore. Your original sensor that comes with the car should work fine. Some sensors (Bosch) have flat frequency response in which case KnocksenseMS does all the filtering while others are resonate ...