On Thursday 10 December 2020 13:06:05 Dr. Nikolaus Klepp wrote: > hi Bill! > > Anno domini 2020 Thu, 10 Dec 12:47:09 -0800 > > William Morder via tde-users scripsit: > > Just wondering if anybody else here has encountered this problem, and > > what to do about it. > > > > When I play an instrument through kmix, I must enable loopback mixing, > > but this creates a hiss in the speakers, which in turn tends to create > > feedback -- in particular, when I plug in a hollow-body electric guitar. > > > > This has only been a problem since I upgraded from Devuan Jessie. I used > > to play through my computer speakers all the time, using them like a > > guitar amplifier. (There is another device, a headphone amplifier, which > > I use as a kind of pre-amp.) But otherwise, nothing in my setup has > > changed, except that I have upgraded to Devuan Beowulf. > > > > I would like to get rid of that hiss, and I don't remember having to > > enable loopback mixing before. I have only recorded a little since > > upgrading (using audacity), but it doesn't seem to affect recording > > quality too much, because I plug headphones into my computer speakers, > > which eliminates both hiss & feedback problems. > > > > Sorry for the detailed presentation; feel free to snip. The main problem > > is kmix-trinity, and whether anything has changed between Devuan Jessie > > and Beowulf, namely, loopback mixing. Or have I somehow misconfigured it? > > > > Bill > > If I recall correctly the loopbackdevice is connected internally to PCM, > but not to the line-in-plugs. That hising is just noise. Please start > alsamixer and play around with the controls, on some hardware you need to > bring the sound devices into a "good" state before kmix can take over. > > Nik > Hail, Nik! Greetings from my hell of cacophony. I hate noise, unless I make it myself, in which case I call it jazz. Thanks for the tip on alsamixer. I don't know when last I looked at it. I've played round with it a little, and it did help me to enable both channels on surround (when the right channel was diminished for unknown reasons). I still haven't figured out the source of the hiss, but I haven't gone through every possible option yet. If it worked before without the hiss, then it seems reasonable to expect that I can restore those settings again. I'll report more, if I find anything worth telling. Bill ____________________________________________________ tde-users mailing list -- users@xxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxx Web mail archive available at https://mail.trinitydesktop.org/mailman3/hyperkitty/list/users@xxxxxxxxxxxxxxxxxx
