Hi all,

Does anyone know is there any sound card can support mix the audio from
the Microphone and LINE-IN at the same time? I found that the Windows
can select either the Microphone or LINE-IN in Sound Recording Source.
Thanks.

Regards,
Dovelet

Previously Dovelet <doveletchan (AT) yahoo (DOT) com.hk> wrote:
I think this is purely a soundcard issue. The problem is that cheaper
soundcards just have one pair of A/D converters and so can only support
one analog input. While it would be possible to mix the signals
in the analog part of the card, it is not being done.

You should look for a card that can support multiple recording
sources at the same time. If the card specification does not say
it can do that, then assume it can not.

I am not really an expert on this, but a schot look over current
offers from Creative and Terratec gave me the impression that
none of their products support more than a single stereo analog
input channel at a time. On the professional side, m-audio
(www.m-audio.com) and RME (www.rme-audio.com) look like potential
sources. Best ask them what of their cards have what you need.
Also take into account that these cards may not have microphone
inputs.

An alternatice is to get a cheap analog studio mixer and connect its
output to the line-in of the card and its inputs to the microphone
and the original line-in source. That is likely the cheapest
solution, depending on the quality you need.

Arno

Previously greenaum (AT) bollocksyahoo (DOT) co.uk wrote:
But can it support recording on the mixed signal?

One thing that may work is to record everything, i.e. the
speaker output. That may also be acceptable to the OP.

Arno

"Dovelet" <doveletchan (AT) yahoo (DOT) com.hk> a écrit dans le message de news:
1131176299.493689.50800 (AT) g14g200...oglegroups.com...

Depending on what you need to do, it could be better to make the operation
numerically afterward. There is a good freeware doing that:
http://sourceforge.net/projects/audacity/

--
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Free technical support at : http://www.protonic.com/

Hi all,

Thank you of your information. Actually, I am using a proprietary Video
Conferening program. I would like to sound of the Microphone and
LINE-IN (e.g. from VCD) can send to the other side at the same time.
However, I found that most of the sound card can support only one
source at the same time so I am asking for help.

If there is no sound card support this feature, a cheap audio mixer is
a good choice. Does anyone know the brand of the audio mixer? The
quailty is for voice and VCD audio. Thanks.

Another question is: does anyone know is there any program can select
the recording source from the sound card Microphone or LINE-IN? My
another alternative is: I run a command and it will select the sound
recording source to Microphone; and I run another command it will
change to the LINE-IN. Any idea? Thanks.

Regards,
Dovelet