[CentOS] Re: recording sound: how 2 control recording level?

Sat Apr 28 19:43:38 UTC 2007
fredex <fredex at fcshome.stoneham.ma.us>

On Sat, Apr 28, 2007 at 10:34:14AM -0700, John R Pierce wrote:
> 
> >Maybe it is your soundcard. Not all soundcards work 100% with linux. and I
> >think you would have to have DMA working with it to get good recordings.
> >Playing directly and recording to storage take different amounts of 
> >processor
> >time. Also, are you recording to a line in port on the card or a mic port.
> >Line in and mic ports have different attenuation and might need a matching
> >transformer or some other sort of level control. That is why higher end 
> >cards
> >have both a mic and line in port.
> >  
> 
> 
> feeding a Line Out to a Mic In just needs attentuator resistors, not a 
> matching transformer.   you can buy a mini-stereo-phone to 
> mini-stereo-phone patch cable with these attenuators built in, designed 
> to allow you to feed the line out from a CD player into a walkman style 
> tape deck's mic input.   The usual attenuator is 100K ohms in series, 
> and 10k ohms in parallel .   Note recording from a Mic Input will likely 
> be noisier.

It claims to be "line in", not "mic".

-- 
-------------------------------------------------------------------------------
 .----    Fred Smith   /              
( /__  ,__.   __   __ /  __   : /     
 /    /  /   /__) /  /  /__) .+'           Home: fredex at fcshome.stoneham.ma.us 
/    /  (__ (___ (__(_ (___ / :__                                 781-438-5471 
-------------------------------- Jude 1:24,25 ---------------------------------
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
URL: <http://lists.centos.org/pipermail/centos/attachments/20070428/39287b3d/attachment-0005.sig>