Frames per second

Huh?

Audio is sample and time based - You will need to work out what the time difference is between 30 and 24 frames with how long the file is. Then, all you need to do is stretch it (any basic audio application should do it).

Thanks for replying.

I used After Effects to set (stretch) the frame rate to 24 frames per seconds. But it played faster.
I need to adjust the playback speed without shifting and bending the pitch.
Can anyone name any proper audio editing tool that can achieve this?

audacity.sourceforge.net is a (seemingly) simple free audio editor that can change length without changing pitch. It uses the fast fourier transform to do it's magic afaik, so you may find some "spectral smearing".

In Audacity 1.3 it is "change tempo" in the effects menu.

Thank you for replying.
According to Audacity's website version 1.3 is unstable. I tried it anyway and it gave me shocking result.
Version 1.2.4 gave me a better result, but still not accurate.
Do you (anyone) know any other audio editing tool that can achieve this?

Forgive my crap question, I'm not an audio guy.

quote:Originally posted by ussmc

Thank you for replying.
According to Audacity's website version 1.3 is unstable. I tried it anyway and it gave me shocking result.

Odd, I tried it before suggesting it and it worked fine for me- I time compressed "A Love Supreme" (John Coltrane) and it sounded fine. I'm using Linux though of course.

Adobe Audition can do it, as can all the versions of CoolEdit- CoolEditPro evolved into Audition. Logic and Cubase and most of the audio packages should be able to- it's a pretty common requirement these days.

Just to make sure.
Did you use the "change tempo" in the effects menu?
Nothing else?

Thanks in advance.

Yep, that's all I did. Just did it again and it came out fine again, this time I reduced an 80 second fragent to 56 seconds. I suggest have a look in the audacity mailing lists at http://sourceforge.net/mail/?group_id=6235