look at ne567 ICi have no idea, but would a analog in work?
Would Goertzel's algorithm work for you?
I want to know if certain frequency or frequencies are present in the input.
2. look whatever "pop-up" in sampling pull - FFT.For second variant, more details necessary, in order to be sure that arduino "capable" for a mission: sampling rate, freq. selectivity / resolution (Q) of the filter?
Please enter a valid email to subscribe
We need to confirm your email address.
To complete the subscription, please click the link in the
email we just sent you.
Thank you for subscribing!
via Egeo 16