giuliomoro Thanks, did both. Here is the output:
no input:
Running /root/Bela/projects/dcoffset/dcoffset
DC offset: left +0.03353760, right: +0.01609924
DC offset: left +0.03351445, right: +0.01606086
DC offset: left +0.03338951, right: +0.01605620
DC offset: left +0.03340944, right: +0.01607187
DC offset: left +0.03343879, right: +0.01607664
DC offset: left +0.03343994, right: +0.01611569
DC offset: left +0.03343153, right: +0.01609502
DC offset: left +0.03342214, right: +0.01612590
DC offset: left +0.03341140, right: +0.01610977
DC offset: left +0.03343892, right: +0.01614893
DC offset: left +0.03354721, right: +0.01610099
DC offset: left +0.03350711, right: +0.01609757
DC offset: left +0.03352513, right: +0.01614154
DC offset: left +0.03352864, right: +0.01616364
DC offset: left +0.03347269, right: +0.01615250
DC offset: left +0.03340564, right: +0.01612313
DC offset: left +0.03347178, right: +0.01607886
DC offset: left +0.03341718, right: +0.01609234
DC offset: left +0.03342850, right: +0.01608598
DC offset: left +0.03345231, right: +0.01616883
with stereo input:
DC offset: left +0.03436710, right: +0.02863815
DC offset: left +0.05110051, right: +0.04157377
DC offset: left +0.00871736, right: +0.00684013
DC offset: left +0.02853746, right: +0.02123611
DC offset: left +0.04174148, right: +0.03430713
DC offset: left +0.00766117, right: +0.00580501
DC offset: left +0.03380148, right: +0.02633641
DC offset: left +0.04608400, right: +0.04757452
DC offset: left +0.01614021, right: +0.00802464
DC offset: left +0.04760592, right: +0.04022577
DC offset: left +0.03712424, right: +0.03447959
DC offset: left +0.02670905, right: +0.02296437
DC offset: left +0.05074302, right: +0.04529650
DC offset: left +0.03817875, right: +0.02780754
DC offset: left -0.01207731, right: -0.01738516
DC offset: left +0.06550369, right: +0.05220555
DC offset: left +0.04053446, right: +0.02743801
DC offset: left +0.00592095, right: +0.00219608
DC offset: left +0.06419247, right: +0.05934516
DC offset: left -0.00185900, right: -0.00230145