RE: Digital Filtering

shabaz — Tue, 18 Sep 2018 20:41:28 GMT

That's a very sharp passband : ) A cool use-case could be to implement some THD measurement tool maybe, by notching at 1kHz, and generating a 1kHz tone too, since you already mention you have the capability to generate synchronised signals.

Hehe I will be looking for a (simpler) project for the 'Path to Programmable' training completion, so I'd love to hear more, as would others for sure.

Nowhere near this sophisticated (and not requiring 24bits either), I've always thought it would be a cool project to have some decent audio filter for ham radio. Something where you could dial up a desired high-pass and low-pass frequency, and also optionally notch out a tone.

I think (I've never looked at any circuits) they probably do it with switched capacitor filter building-blocks today.

RE: Digital Filtering

jpnbino — Tue, 18 Sep 2018 19:31:30 GMT

Hi MK,

When I know I need such a filter?

Which parameters should I most care about?

I think I need a get started thing in digital filtering application, most of the things I know is from the university ( theory ) nor a single lab.

thanks,

João Paulo Bino