On Mon, Jan 30, 2012 at 2:03 PM, Fons Adriaensen
<fons@linuxaudio.org> wrote:
I just recorded the first minute using the alsa-jack plugin, this
works perfectly and their is no offset in the signal. So it's not
the source or firefox or the plugin.
> However Ive noticed earlier that when I use my (cheap headset) mike to
> record directly into audacity, this similar DC offset occurs. Since I am no
> audio pro I did not know what to google for before seeing the tabs in the
> normalize dialog of audacity.
Could it be that while recording from firefox you had the soundcard
(auto)connected to the same track as well ? That would add the offset
if the cause is your soundcard (which I suspect), even if the headset
is not plugged in.
So you are suggesting I "unconnect" the soundcard (and 'silently' record?)
Ok how to unconnect the card?
> So if you ask me exactly how much DC offset I dont know how to find out in
> figures. The audacity track shows it 1/4th to 1/3rd way up. Center is 0.0
> top is 1.0 inbetween is 0.5.
> This is little more than half way between 0 and 0.5.
Which is way too much, and indicates broken hardware.
So please check your connections and then we'll see again.
Not sure what you are asking here...
What I can try is a friends machine...
Let me try that (Some challenges to that I am the most 'pro' out here in the sense that I at least know how to spell j-a-c-k :-) -- I guess I'll just commandeer the machine.
Ciao,