Isses with audio only rendering

JaysonHolovacs wrote on 7/6/2004, 1:03 PM
Anyone see this before?

I had two music clips and I want to flow one into the next. Because they were jarringly different styles, I split the end off of the first and wanted to slow it down a bit so the transition wasn't so bad.

Now, Vegas doesn't appear to allow any kind of envelope or keyframe based speed changes on audio like it does on video. Is this correct or did I miss something?

I found I could apply time stretching, but ONLY at the track level. So, I took the second half of the clip, put it on its own time-stretched track, and lined it up directly underneath the end of the first half, then put the second music clip on the first track lined up with the end of the slowed down second track audio.

Okay, so I try it and it previews fine. Then I render it to mp3, and there's a big blank spot where the slowed clip should be playing. It's as if I rendered with Track 1 soloing or track 2 muted, but it wasn't. Tried preview again, sounded fine. Tried rendering to wave, same empty hole.

Finally, I applied non real-time slowdown to the clip, and pasted the new file into track one in the appropriate place. This worked, and I had my effect. But it seems that I should not have had to resort to that.

Any idea why this doesn't work?

I realize I should have just gone and found a good sound editor, but I was too lazy and just wanted to do this quick thing in Vegas. Does anyone else do minor sound editing in Vegas, or is everyone here more sophisticated than that? If you use another program, what do you use?

-Jayson

Comments

Chienworks wrote on 7/6/2004, 1:35 PM
Vegas indeed does not have envelope control for audio speed changes, so you haven't missed anything there.

Most of us make use of a dedicated audio editor for a lot of these tasks. I use Sound Forge a lot. For your particular case, it includes a "Pitch Bend" function that will do just what you want. You can gradually slow down part of an audio file, and even vary the speed change as the file progresses. The speed change can be accompanied by a pitch change (raise and lower the pitch as well) or pitch can be preserved and the speed changed by time stretching only. It's not quite as real-time interactive as Vegas, but it usually only takes a couple of tries and some quick work with a calculator to get exactly the effect you want.
JaysonHolovacs wrote on 7/7/2004, 6:54 AM
Thanks for the comments!

But as for the bug, noone has been able to reproduce it?

-Jayson
MJhig wrote on 7/7/2004, 9:01 AM
If you don't have Sound Forge you can do this down and dirty in Vegas.

Place the first song in the track.

Split the file near the end where you want the song to slow down.

Listen to the split, if it's audible, zoom in and drag the edge of the song end clip a few milliseconds to the left to increase the crossfade.

Now Control + drag the right edge of the song end clip to time stretch (be sure preserve pitch is selected in the clip's properties) to the desired tempo.

Crossfade the second song.

MJ