[linux-audio-user] Re: Aligning audiofiles for different recorders. - Linux-audio-user

7 Mar 2006

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  Date: Tue, 7 Mar 2006 14:22:48 +0100
 From: "Alex Polite" &lt;notmyprivateemail(a)gmail.com&gt;
 Subject: [linux-audio-user] Aligning audiofiles for different
 	recorders.
 Howdy

 I make a lot of interviews. Right now I have a two channel recorder. I
 connect one headset mic to each channel,  put one on myself and one on
 the interviewee. Works kind of alright but I would rather have the
 interviewee wear one recorder and wear another myself. This gives us
 more freedom to move around during the interview.

 The tricky part will be to align the two separate recordings. I could
 probably do it manually in ardour, dragging the regions back and forth
 and stretching them until they line up exactly.

 I've googled a bit to find a tool that does this aligning
 automatically but haven't come up with anything.

 Does anybody out here know of something? 
You could try using a clapper board, or anything that makes a sharp
click.
It should get picked up by both mics. Then, when you come to align the
two recordings, you just line up the clicks at the start and they will
be in sync. 
If both recorders are digital then they should stay in sync for quite a
while. You should not need to do any time stretching.

This is the old way of getting two recorders (a camera and location
sound) to sync, and works quite well. It's still used nowadays when
people are too cheap (like me) to do proper time code.

...

 alex 