headphones out of sync with speakers!

[simonjames123]

can anyone help, im using audacity through a usb device, i am mixing music on my cdjs and to do this i have to listen to my tracks through my headphones
but when i try to record, the track playing is out of sync with my headphones the speakers r about half a second behind?

[simonjames123]

Hi, can anyone help, im trying to record my dj mixes, im using a pioneer djm500 mixer and cdj1000's, ive just bought a citronic ac-i usb audio capture device, now the problem is when im playing my tracks it records perfectly to audacity, but the sound coming through my headphones wich is connected to my mixer is about half a second infront of my speaker sound wich is the same track, i need it to be the same in order to beat match, im running windows 7 on a hp laptop wich is new, if anyone could help it would be great!

[kozikowski]

...but the sound coming through my headphones wich is connected to my mixer is about half a second infront of my speaker sound .. which is connected to the computer.

...i need it to be the same in order to beat match .. from a track already recorded

Did I get that right?

In Audacity 1.3.13, you can control the latency -- or difference between recording and playback timing.

Edit > Preferences > Recording > Latency.

You can't control this in Audacity 1.2.

Koz

[bgravato]

No need to double post. I merged both topics.

The problem you're experiencing is due to latency. Conversion from analog to digital and all the signal processing happening between the sound coming from your mixer, going to the usb device and into the computer takes time to happen, that's why you have that delay between what comes out from the mixer and what comes out of the computer.

[simonjames123]

ye that sounds exactly my problem, so can i control this myself, if so what shold i do?

[kozikowski]

Are you in Audacity 1.3.13? Help > About? None of this works in Audacity 1.2.

Koz

[bgravato]

You're listening from two different sources, you're always going to have a delay.

What you can do is play with the latency parameter in the preferences to correct that in the recorded track, or you can use the time shift tool afterwards.