Audio Sampling Rate issue

[Mike J.]

Yeah… I think you started your project without thinking things through with tests.

First…sounds like you’re audio was recorded to DAT at 44.1 and speed up to 48 in Protools. 44.1 samples instructed to be a sample rate of 48 without actually converting makes the audio play faster.

Probably the first mistake is there.

Next, when you do get your audio correct at 48 and bring into FCP, you may still have to speed change to 99.9 % like you do with film. See… the panasonic records 23.98 not 24 fps with pulldown which means 29.97 and not 30fps. Your audio is most likely 30fps without pulldown if you recorded straight 48 (or 44.1)

But I say this and I don’t know what equipment you used or if you just plugged in a portadat because you read it was what to do and then recorded.

You’re not alone….people do this all the time.

[Juicestain]

-I was using a portable Tascam DAT recorder with the switch flipped to 48khz. When I played it back on a DAT player in the studio, it said it was playing audio at 48khz too.
-I recorded at 30p on the DVX-100.
-Under Item Properties -> Format for both the camera audio and TASCAM audio say 48khz.
I thought I was sure to keep it at 48 across the board, but somehow it still got messed up. Any solution ideas?

[Mike J.]

Who’s your protools guy?

Can they try it again?

Becasue you say the pitch is faster…that tells me it wasn’t recorded at the right rate…. I still feel that it was recorded 44.1 but stamped 48.

Try going back to protools have them bring in one track as 44.1 then export it as 48.