Re: [LAU] DC offset

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To: Fons Adriaensen <fons@...>
Cc: <linux-audio-user@...>
Date: Monday, January 30, 2012 - 1:35 pm

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On Mon, Jan 30, 2012 at 2:03 PM, Fons Adriaensen wrote:

> On Mon, Jan 30, 2012 at 08:41:28AM +0530, Rustom Mody wrote:

So you are suggesting I "unconnect" the soundcard (and 'silently' record?)
Ok how to unconnect the card?

>

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,

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On Mon, Jan 30, 2012 at 2:03 PM, Fons Ad=
riaensen <fons@linuxaudio.org> wrote:

On Mon, Jan 30, 2012 at 08:41:28AM +0530, Rustom Mody wrote:

> Immediate context:

own
/jackaudio.org/routing_alsa
k

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

the

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 "u=
nconnect" the soundcard (and 'silently' record?)Ok how to =
unconnect the card?=A0

> So if you ask me exactly how much DC offset I dont know how to find ou=
t in

is 0.0

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 fr=
iends 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,

--
FA

Vor uns liegt ein weites Tal, die Sonne scheint - ein Glitzerstrahl.

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Messages in current thread:
[LAU] DC offset, Rustom Mody, (Sun Jan 29, 5:13 pm)
Re: [LAU] DC offset, Fons Adriaensen, (Sun Jan 29, 5:41 pm)
Re: [LAU] DC offset, Rustom Mody, (Mon Jan 30, 3:11 am)
Re: [LAU] DC offset, Fons Adriaensen, (Mon Jan 30, 8:34 am)
Re: [LAU] DC offset, Rustom Mody, (Mon Jan 30, 1:35 pm)
Re: [LAU] DC offset, Fons Adriaensen, (Mon Jan 30, 1:59 pm)
Re: [LAU] DC offset, Rustom Mody, (Mon Jan 30, 5:31 pm)
Re: [LAU] DC offset, Fons Adriaensen, (Mon Jan 30, 5:38 pm)
Re: [LAU] DC offset, david, (Tue Jan 31, 7:27 am)
Re: [LAU] DC offset, thijs van severen, (Tue Jan 31, 9:49 am)
Re: [LAU] DC offset, david, (Wed Feb 1, 7:09 am)
Re: [LAU] DC offset, Joel Roth, (Wed Feb 1, 9:55 am)
Re: [LAU] DC offset, Daniel Worth, (Thu Feb 2, 2:11 pm)
[LAU] Session management tools (was: Re: DC offset), Joel Roth, (Thu Feb 2, 10:46 pm)
Re: [LAU] Session management tools, fred, (Sat Feb 4, 5:56 am)
Re: [LAU] Session management tools, rosea.grammostola, (Sat Feb 4, 9:34 am)
[LAU] Audacity + persistent JACK ports -- was: DC offset, Robin Gareus, (Tue Jan 31, 12:24 pm)
Re: [LAU] Audacity + persistent JACK ports -- was: DC offset, Alexandre Prokoudine, (Tue Jan 31, 1:06 pm)
Re: [LAU] Audacity + persistent JACK ports -- was: DC offset, Fons Adriaensen, (Tue Jan 31, 1:38 pm)
Re: [LAU] DC offset, jsuomine, (Mon Jan 30, 10:29 am)