Binaural Recording using a PC's Line in.

[Guest]

Archived from groups: rec.audio.pro (More info?)

Hi,
I tried to record a sinusoidal tone using a pair of microphones by
plugging the microphones into the line-in port of my sound card. I used
Sony Sound Forge to record the signal.But what i saw was that both the
channels were identical.It seemed like the recorded file was a sum of
the individual mic ouputs. I connected the mics to the line in using a
Dual Mono female to Stereo Male Jack.
Is there anyway I can actually record the channels separately, i mean
the left mic's output should come in the left channel and right mic in
the right channel.

Thanx in advance,

Karthik Ravikanti

http/students.iiit.net/~karthik_ravikanti

Let there be Sound!!!

 

[Guest]

Archived from groups: rec.audio.pro (More info?)

I dont really need a great quality, so sensitivity does not matter.By
the way, i m using a preamp too.All I need is delay between the two
channels, so that i can cross-corelate them and find the
ITD(Inter-aural time difference).

 

[Guest]

Archived from groups: rec.audio.pro (More info?)

Karthik
You said you did not connect your mics into the stereo MIC input (or each
one into a discreet input).
Your Mic input adaptor should be stereo-to-stereo anyway, to keep separate
the two sources which, I guess, are terminated in 1/4" or 3.5mm jackplugs.
You have therefore combined L and R.
Roughly, Line at 100mV is about two hundred times LESS sensitive than
dynamic Mic at 0.5mV.
But how you expect to get a sine wave from just using 2 mics into the Line
input dumbfounds me!
Jim

 

[Guest]

Archived from groups: rec.audio.pro (More info?)

On 1 Mar 2005 04:04:12 -0800, "P L U M !"
<karthik.ravikanti@gmail.com> wrote:

>I tried to record a sinusoidal tone using a pair of microphones by
>plugging the microphones into the line-in port of my sound card. I used
>Sony Sound Forge to record the signal.But what i saw was that both the
>channels were identical.It seemed like the recorded file was a sum of
>the individual mic ouputs. I connected the mics to the line in using a
>Dual Mono female to Stereo Male Jack.
>Is there anyway I can actually record the channels separately, i mean
>the left mic's output should come in the left channel and right mic in
>the right channel.

Mics should go into mic inputs. But you're getting some sort of
result - so let's leave that point for now

Take this logically, one step at a time. Connect only one mic. Do
you get a recording on only one stereo channel in SoundForge?

CubaseFAQ www.laurencepayne.co.uk/CubaseFAQ.htm
"Possibly the world's least impressive web site": George Perfect

 

[Guest]

Archived from groups: rec.audio.pro (More info?)

Yeah, I did connect one mic at a time....the other channel does not go
off...




Karthik
http/students.iiit.net/~karthik_ravikanti
----

Let there be Sound!!!

 

[Guest]

Archived from groups: rec.audio.pro (More info?)

Hi again,

Thanx for the responses guys....but I found the problem!!!

The dual mono female input jack I was using was the culprit.
I tested it with a multimeter and the channels were shorted...I
replaced it with one stereo jack....and everything is just workin as it
should....thanx again..


Karthik Ravikanti

http/students.iiit.net/~karthik_ravikanti

----

Let there be Sound!!!