30 Jan
2012
30 Jan
'12
9:33 a.m.
On Mon, Jan 30, 2012 at 08:41:28AM +0530, Rustom Mody wrote:
Immediate context:
Im trying to capture from firefox using the .asoundrc/jack settings shown
http://jackaudio.org/routing_alsa
[Track is http://www.raaga.com/play/?id=183659
I would just buy it if it were for sale; its not. You may have to click
past an ad]
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 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.
Ciao,
--
FA
Vor uns liegt ein weites Tal, die Sonne scheint - ein Glitzerstrahl.