<![CDATA[calibration of nonresonant filter]]>How could i mesure the peak frequency of a moving nonresonant analog filter without a feedbackloop between its audio output back into its audio input?
I do have a calibration patch for resonating filters and oscillators.

What would be a good way to do
this? White noise into the filter > FFT > Findung the peak? And slowing the whole calibration procedure by the overall latency. Or better with a sine sweep instead of noise for being independend of randomness.

How can i find such a peak?

]]>http://forum.pdpatchrepo.info/topic/12470/calibration-of-nonresonant-filterRSS for NodeSun, 10 May 2026 08:32:16 GMTMon, 02 Dec 2019 19:02:36 GMT60<![CDATA[Reply to calibration of nonresonant filter on Mon, 02 Dec 2019 19:02:36 GMT]]>How could i mesure the peak frequency of a moving nonresonant analog filter without a feedbackloop between its audio output back into its audio input?
I do have a calibration patch for resonating filters and oscillators.

What would be a good way to do
this? White noise into the filter > FFT > Findung the peak? And slowing the whole calibration procedure by the overall latency. Or better with a sine sweep instead of noise for being independend of randomness.

How can i find such a peak?

]]>http://forum.pdpatchrepo.info/topic/12470/calibration-of-nonresonant-filterhttp://forum.pdpatchrepo.info/topic/12470/calibration-of-nonresonant-filterMon, 02 Dec 2019 19:02:36 GMT<![CDATA[Reply to calibration of nonresonant filter on Tue, 03 Dec 2019 16:11:01 GMT]]>have a look at H13.butterworth.pd and the filtergraph1 and filtergraph2 abstractions in the audio examples.
and you'll need to delay the reference signal (2nd & 3rd outlet of filtergraph1) according to your systems latency. I haven't tried this with analog filters, but i guess it should work..

]]>http://forum.pdpatchrepo.info/topic/12470/calibration-of-nonresonant-filter/2http://forum.pdpatchrepo.info/topic/12470/calibration-of-nonresonant-filter/2Tue, 03 Dec 2019 16:11:01 GMT