giuliomoro All good, I decided to install the Bela image and run it. I played music through my PC at max volume and this was the result
root@bela:~/Bela# make PROJECT=dcoffset
make: Warning: File 'libraries/UdpClient/build/UdpClient.d' has modification time 105753458 s in the future
Building dcoffset.c...
...done
make[1]: Warning: File 'libraries/UdpClient/build/UdpClient.d' has modification time 105753454 s in the future
Linking...
...done
make[1]: warning: Clock skew detected. Your build may be incomplete.
make: warning: Clock skew detected. Your build may be incomplete.
root@bela:~/Bela# cd projects/dcoffset/
Without any input connected:
root@bela:~/Bela/projects/dcoffset# ./dcoffset
DC offset: left +0.00085364, right: +0.00040658
DC offset: left -0.00000194, right: +0.00000023
DC offset: left -0.00000372, right: -0.00000884
DC offset: left +0.00001324, right: +0.00000419
DC offset: left -0.00001661, right: +0.00000042
DC offset: left +0.00000233, right: -0.00000274
DC offset: left +0.00000775, right: +0.00000638
DC offset: left -0.00000724, right: -0.00000873
DC offset: left +0.00000113, right: -0.00000197
DC offset: left +0.00000464, right: +0.00001032
DC offset: left -0.00000702, right: -0.00000289
DC offset: left -0.00000418, right: +0.00000075
DC offset: left +0.00001144, right: +0.00000771
DC offset: left -0.00001358, right: -0.00001399
DC offset: left +0.00001094, right: +0.00000765
DC offset: left -0.00000128, right: +0.00000794
DC offset: left -0.00001059, right: -0.00001504
DC offset: left +0.00000862, right: +0.00000927
DC offset: left +0.00000179, right: -0.00000076
DC offset: left -0.00000907, right: -0.00001169
DC offset: left +0.00000759, right: +0.00000601
DC offset: left -0.00000651, right: +0.00000073
DC offset: left -0.00000525, right: -0.00000305
With stereo input connected, music playing through computer at max volume:
root@bela:~/Bela/projects/dcoffset# ./dcoffset
DC offset: left -0.00717935, right: -0.01074473
DC offset: left -0.00390745, right: -0.00498262
DC offset: left +0.02784268, right: +0.03062138
DC offset: left -0.00514316, right: -0.02072899
DC offset: left +0.03944315, right: +0.03887933
DC offset: left +0.06335330, right: +0.06113920
DC offset: left +0.00463212, right: +0.00448159
DC offset: left +0.00903933, right: +0.01065871
DC offset: left +0.02466380, right: +0.01913054
DC offset: left +0.00189423, right: +0.00217318
DC offset: left +0.01464986, right: +0.01375677
DC offset: left +0.01703434, right: +0.01619864
DC offset: left +0.01814851, right: +0.02262099
DC offset: left -0.00894132, right: -0.01296396
DC offset: left +0.04276773, right: +0.03435198
DC offset: left +0.05630204, right: +0.05638736
DC offset: left -0.00901195, right: -0.01019337
DC offset: left +0.02035856, right: +0.01759371
DC offset: left +0.00731938, right: +0.00429321
DC offset: left +0.03877168, right: +0.03503712
DC offset: left -0.03139934, right: -0.03261248
DC offset: left +0.05166019, right: +0.04940788
DC offset: left +0.04237261, right: +0.04004679