Slowing down an audio track

goshep wrote on 3/5/2008, 9:04 PM
Hey all,

I've been using Vegas since VV4 so you'd think I'd know the answer but I've never done this before. I want to slow to a stop an audio track (as if someone has placed their hand on a turntable and slowed it to a stop). Then I want it to start in the same manner (as if someone has slowly let the turntable spin up to speed).

I've fiddled with the audio envelopes but I can't seem to find a velocity setting for audio. Only pan and volume.

Probably a no-brainer but the answer eludes me.

Comments

NickHope wrote on 3/5/2008, 11:09 PM
You can hold down <CTRL> and drag the length of the audio event to slow it down or speed it up. If you split your event into small pieces and dragged each out progressively further then you should be able to get the effect you want.
ChristoC wrote on 3/6/2008, 12:44 AM
There's a free VST effect called 'Scratchdown' which does exactly what you describe; simply insert in mixer.....although it can be a bit dodgy.... find at http://www.kvraudio.com/get/684.html

SoundForge Pitch Bend Effect will also do that.
goshep wrote on 3/6/2008, 12:40 PM
So there is no option to set it like an audio fade, except make it speed instead of volume? AGG. Seems impossible that such a sophisticated application would lack such a seemingly simple feature. I thought for sure it was just a matter of ticking the right box and viola. That's a real bummer. I messed a little with the ctrl drag but it's seems to be one speed dependent upon the length of the drag. I need that gradual slow to a crawl effect. I followed the link to that plug-in but couldn't find it specifically. I still can't believe there isn't a simple way to do this within Vegas.

Bummer
johnmeyer wrote on 3/6/2008, 12:44 PM
No speed envelopes. Given that Vegas got its start as an audio editor and that SoundForge can do this, it is amazing that Vegas can't. But it can't (at least not like you want to do it, with gradual speed up/down).
goshep wrote on 3/6/2008, 12:51 PM
Anyone selling an older version of Forge? This is the first time I've ever had to go outside of the audio capabilities of Vegas so I don't see a new version of Forge making much sense for me. I don't really see an old version making sense either but what's a guy gonna do?

Maybe there are some toys within Forge that I'd use if I had them but I just don't manipulate much audio.

Thanks for the help.
TGS wrote on 3/6/2008, 9:14 PM
If you could feed your audio into your camera, recording some kind of video signal at the same time. Then import it back into Vegas, couldn't you then use a Video Velocity envelope?
I've never tried it, but it seems like a possibility. Unless audio isn't included with a video Velocity envelope. (I guess I gave myself away, I've never used the velocity envelope)
Well, if johnmeyer didn't suggest it, it's probably not possible.
Kennymusicman wrote on 3/7/2008, 5:43 AM
No - using te velocity envelope will not help, as the audio is treated seperately and will thus cintinue in realtime.
The timestretch plug, and pitch shift plug will not help, as neither of them are automatable.
However. the VIBRATO plug, will give you 'exacly' what you want, within the scope of 24semitine pitch shift, which is 4x, or .25x, and is automateable.

Otherwise, it's a lot easier and more flexible in SF as mentioned.

[edit: another option, and a little more fun :)]

If you can record your vegas audio input back in, as an input, then use your shuttle scrub control! Hold ctrl, and you can control the increment very easily and accurately with the mouse. THat'll allow a simple way to get down to a stop.
MarkWWWW wrote on 3/7/2008, 5:50 AM
If you can't find the plugin ChristoC pointed you to then you might like to try another free plugin called TapeStop which does much the same thing.

Mark
Former user wrote on 3/7/2008, 6:19 AM
I tried Tapestop, but couldn't figure out how to automate it. It seems to be just a manual operation, which is not repeatable.

Dave T2