[sdiy] Good 24db/oct HP-LP-BP-Notch filter Schematics ??

[Richie Burnett]

Maybe somebody who owns one of these modules can feed in a known signal (like white noise, or a low pitch sawtooth) and upload 5 second samples of each one of the outputs with the cutoff set at say 1 kHz.

Its easy to determine the filter roll-off rates from the spectrum of such results.

-Richie,

Sent from my Xperia SP on O2