How to send line in on audio to output on Windows 7 (a.k.a. loopback)

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Basically I was surprised that Windows 7 has this functionality. Go to your device’s properties page and there’s a “listen” tab. Click on “listen to this device” and voila! You can listen to the line in!

I was actually looking for a way to do this via a program, and had no idea that Windows 7 does this natively

Updates: changed the article to match semantics more

Posted on April 9th 2010 in Uncategorized

2 Responses to “How to send line in on audio to output on Windows 7 (a.k.a. loopback)”

  1. afh Says:

    you can have windows 7 “listen” to a recording device, which would be called Monitor. it doesn’t loop anything back or forward, it merely lets you hear what’s being recorded.
    you cannot have windows 7 record an audio device, which would be called Loopback

    on windows 98se there was a fairly up-front option for the recording device to listen to “wave” (or CD, or whatev), which meant you can record sounds being played. That was loopback.

  2. Joe Says:

    What you are saying is confusing.

    When I did it, the sound devices weren’t recording with any application. Now, Windows probably does this by recording the audio into a sound buffer, and then sending it to an output buffer. Also, Windows 7 does allow audio capture on sound that goes out for sound cards that do not have that feature.

    Windows audio recording: http://vismod.media.mit.edu/vismod/demos/speechcom/AudioCapture.txt
    which makes Windows 7 record audio.

    I’ll update the title to fit semantics better. A lot of people are calling what I’m saying loopback.

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