please help with a "lag-type" sync problem when recording

[clazymike]

Hi everyone--

I've been having this problem and I would categorize it as a sync problem, but it's a little different than any problem I've searched here.

When I record a straight take that's longer than about 3 minutes, near the end, the audio seems to be stretched by about 350 ms or so. For example, if I recorded 5 tracks with a midi click track that clicked every beat, it world work fine during the record, but when I play it back, after about 3 minutes or so, none of the audio files will sound that they were lined up anymore. I have to go in and slide the last minute or 45 seconds of each track back a tiny tiny bit. This occurs even I played perfectly in time.

It works fine if I stop the recording and make a tiny break during a rest during recording and cut up the track into two shorter takes, but again if I just put in one long take I have this problem.

Any suggestions?

Thanks.

Clazymike

 

[kennedy connor]

make sure that the wave position box is checked on the direct show audio box. Also check out the manual for audio optimizations...this may help your system run smoother.

 

[crosstudio]

1) full chase lock.

2) check to ensure that your sound card crystal is consistently hitting 48khz. the crystal on my d/a/d converter doesn't seem to be quite as stable as the one in my pc, so i always use the pc as the timing master.

3) make sure only 1 piece of gear is the master. the bible says a slave can not serve 2 masters. this is true for audio as well.