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alsa-jack-loopback HF-roll-off (REW)
Posted: Tue Jan 07, 2020 11:16 am
by Capoeira
Has anybody ever directly looped-back alsa-out to alsa-in in a alsa-jack-loopback and measured the response in REW?
I measure a HF-roll-off after 16Khz:
Re: alsa-jack-loopback HF-roll-off (REW)
Posted: Tue Jan 07, 2020 2:05 pm
by Capoeira
found out it changes with samplerate. 88.2 is minimum to get flat to 20Khz
Re: alsa-jack-loopback HF-roll-off (REW)
Posted: Sat Dec 19, 2020 12:59 pm
by Capoeira
finaly found a solution to use REW in 44100
instead of the usual alsa_in and alsa_out:
Code: Select all
zita-j2a -d ploop -r 44100 -Q 96
zita-a2j -d cloop -r 44100 -Q 96
- rrrr.jpg (177.79 KiB) Viewed 1085 times
Re: alsa-jack-loopback HF-roll-off (REW)
Posted: Tue Dec 22, 2020 1:03 pm
by Capoeira
unfortunatly the zita stuff is unstable.
I now found in Pipewire the best solution:
viewtopic.php?p=127073#p127073