Motu Ultralight re-record sync issues

boody · 20th August 2007

Hi,

a friend of mine asked for help: he wants to re-record an audio track through his amp and use the re-recorded track parallel with the original track. Problem is we couldn't get the re-recorded track in sync:no matter what we tried, the difference between the 2 tracks stuck on less than 1 sample so it gives phase issues. The DAW is Logic on a macbook with usb2 ext audio disc.

Any info, solutions or experiences might help.

thanks
Budy

jimijay · 20th August 2007

You can correct phase problems by changing the microphone distance from the amp. If latency is an issue with matching up the files, zoom in to the track's waveform and just nudge the audio files over to align.

boody · 20th August 2007

Quote:

Originally Posted by jimijay

You can correct phase problems by changing the microphone distance from the amp. If latency is an issue with matching up the files, zoom in to the track's waveform and just nudge the audio files over to align.

Hi, thanks for the response. The re-recorded track is just motu-out > amp in > amp out > motu in, no mics involved. Problem tested with motu out directly routed to motu in.

Problem is that you cannot phase align the tracks because the difference is less than 1 sample. Because both tracks are used on playback this gives phase issues (the reason my friend asked for help).

On the test the re-recorded signal was phase reversed. They never cancel completely.

tINY · 21st August 2007

If you are hearing "phase issues" the problem is not a delay in the interface of less than 25 uS.

-tINY

20th August 2007	#1
boody Lives for gear Joined: May 2004 Location: the Netherlands Posts: 837 Thread Starter	Motu Ultralight re-record sync issues Hi, a friend of mine asked for help: he wants to re-record an audio track through his amp and use the re-recorded track parallel with the original track. Problem is we couldn't get the re-recorded track in sync:no matter what we tried, the difference between the 2 tracks stuck on less than 1 sample so it gives phase issues. The DAW is Logic on a macbook with usb2 ext audio disc. Any info, solutions or experiences might help. thanks Budy __________________ There's music that serves as entertainment and there's music that is meant to be Art. Art can be entertaining, entertainment can be perceived as Art. But the initial goal is totally different. www.ietmusic.com www.mokosound.com

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20th August 2007	#2
jimijay Gear interested Joined: Jan 2006 Posts: 13	You can correct phase problems by changing the microphone distance from the amp. If latency is an issue with matching up the files, zoom in to the track's waveform and just nudge the audio files over to align.

21st August 2007	#4
tINY Gear Guru Joined: Jul 2004 Location: Orygun Posts: 10,233	If you are hearing "phase issues" the problem is not a delay in the interface of less than 25 uS. -tINY