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Adapting a hi-fi's line-out to a computer's microphone input?

A

Adam Funk

Jan 1, 1970
0
I'd like to connect the line-level output from my hi-fi to a computer's
microphone input (it doesn't have a line-in jack).

Is anyone aware of a commercially available adapter for this purpose?

Alternatively, what do I need to know to build one? Is a simple
voltage-divider sufficient for this?
 
J

Jan Panteltje

Jan 1, 1970
0
I'd like to connect the line-level output from my hi-fi to a computer's
microphone input (it doesn't have a line-in jack).

Is anyone aware of a commercially available adapter for this purpose?

Alternatively, what do I need to know to build one? Is a simple
voltage-divider sufficient for this?

First, mic input is mono, one pin carries DC.
Yes, you can use a divider, summ the 2 stereo line outputs into one resistor.


right ---R1 ----
|-------------- mic
left --- R1 ----| -
| |
R2 |
| |
/// ///

Make R1 about 10k
Make R2 600 Ohm

Mike input:
http://vip.asus.com/forum/view.aspx..._id=21&model=Xonar+D2X&page=1&SLanguage=en-us
 
I'd like to connect the line-level output from my hi-fi to a computer's
microphone input (it doesn't have a line-in jack).

Is anyone aware of a commercially available adapter for this purpose?

Alternatively, what do I need to know to build one?  Is a simple
voltage-divider sufficient for this?

I would just get a sound card with a Line in on it? I think I spent
$20 on mine and it has one, I can't believe you don't. But then my
Uncle's TV doesn't have Closed Captioning ability either so I'm ready
to believe just about anything at this point.
 
J

Jan Panteltje

Jan 1, 1970
0
I would just get a sound card with a Line in on it? I think I spent
$20 on mine and it has one, I can't believe you don't. But then my
Uncle's TV doesn't have Closed Captioning ability either so I'm ready
to believe just about anything at this point.

Asus eePC 701 only has mike and headphone out,
so you can for example connect a headset for Skype.
It is not intended for recording from audio sources.
But you can download audio and play via the speakers or headphones.
Nothing wrong with that.

Making a real good quality recording on a PC requires a top end soundcard.
Not an emu10 based soundblaster for example.
My experience with some 20$ no-name soundcards is that they lay now in some
cupboard... noisy.
 
A

Adam Funk

Jan 1, 1970
0
I would just get a sound card with a Line in on it? I think I spent
$20 on mine and it has one, I can't believe you don't. But then my
Uncle's TV doesn't have Closed Captioning ability either so I'm ready
to believe just about anything at this point.

It's a laptop. Maybe I should consider an external USB device with a
line-in jack?
 
A

Adam Funk

Jan 1, 1970
0
First, mic input is mono, one pin carries DC.

I'd forgotten about that ... maybe I should just look into an external
device with line-in.

Yes, you can use a divider, summ the 2 stereo line outputs into one resistor.

[snipped nice diagram]


Thanks for the details, however!
 
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