How can I slowly increase the speed of an audio track? at DVinfo.net

Eric Edmondson · January 28th, 2006, 08:45 PM

Hi,
I'm trying to gradually increase the speed of an audio track (a heartbeat), to mimic the sound of an increasing pulse. Anyone know how I might be able to accomplish something like that?

Thanks!

Barry Oppenheim · January 30th, 2006, 09:50 AM

Right click on the audio track and select audio speed/duration. You can make the clip faster by either decreasing the number of frames or increasing the speed. Also click on the box that says maintain pitch (unless you also want the clip pitch to speed up, i.e the clip on helium). Then click OK.

Now cut the clip a few seconds in and right click on the clip to the right of the cut. Repeat the speeding up process again as above. You will have to experiment on how many cuts and how long each cut is depending on how slowly or quickly you want the audio to accelerate.

Eric Edmondson · January 31st, 2006, 11:14 AM

Thanks for the tip Barry. I've tried it that way, but it's very difficult to keep the right time between beats as it speeds up. I was really hoping I might be able to "ramp it up" like you can with volume. Maybe it's just not something Premiere can do. I hear Acid can easily do it, maybe I'll have to try it.

Cheers~

Jean-Francois Robichaud · January 31st, 2006, 11:35 AM

Premiere does not allow you to ramp up speed. You can do this in AE though.

Eric Edmondson · February 3rd, 2006, 11:04 AM

Thanks Jean-Francois, I'll give after effects a try.

Steven Gotz · February 3rd, 2006, 01:23 PM

Just a hint - the effect in After Effects is called "Time Remapping".

And using After Effects 7 you can bring that into Premiere Pro 2.0 without even rendering out first using Dynamic Link which comes with the Production Studio.

Eric Edmondson · February 11th, 2006, 10:26 PM

I've been messing around with AE, and while I found the time remapping, I can't figure out how to use it (I have next to no experience w/ AE). Would anyone be willing to post a quick outline of the steps necessary to achieve the effect? I normally wouldn't ask, but I'm pushing it really close to the submission deadline for a local festival, so I'm getting desperate.

Thanks for all the info everyone!

Cheers~
Eric

Mitja Popovski · February 13th, 2006, 01:24 AM

why to do it in AE, if you have dedicated software for that: adobe audition, it is very easy to do it in there, in fact, when it was named cool edit it was the best software for time stretching and compressing, (today any audio editor can do it) right click on clip in AP and choose edit in adobe audition

Eric Edmondson · February 13th, 2006, 05:58 PM

Ok, I have somewhere I can use audition, can you tell me how to ramp up the speed of an audio track with it?

I've given it a look, and I'm lost...

Thanks.

Mitja Popovski · February 14th, 2006, 01:58 AM

In AA2.0 go to effects/time,pitch/stretch

January 28th, 2006, 08:45 PM	#1
Eric Edmondson New Boot Join Date: Apr 2005 Location: Lakewood, CO Posts: 12	How can I slowly increase the speed of an audio track? Hi, I'm trying to gradually increase the speed of an audio track (a heartbeat), to mimic the sound of an increasing pulse. Anyone know how I might be able to accomplish something like that? Thanks!

January 31st, 2006, 11:35 AM	#4
Jean-Francois Robichaud Regular Crew Join Date: Sep 2005 Location: Montreal, Canada Posts: 142	Premiere does not allow you to ramp up speed. You can do this in AE though. __________________ JF Robichaud

February 3rd, 2006, 01:23 PM	#6
Steven Gotz Trustee Join Date: May 2002 Location: Clermont, FL Posts: 1,520	Just a hint - the effect in After Effects is called "Time Remapping". And using After Effects 7 you can bring that into Premiere Pro 2.0 without even rendering out first using Dynamic Link which comes with the Production Studio. __________________ Steven Gotz http://www.stevengotz.com

January 30th, 2006, 09:50 AM	#2
Barry Oppenheim Regular Crew Join Date: May 2005 Posts: 30	Right click on the audio track and select audio speed/duration. You can make the clip faster by either decreasing the number of frames or increasing the speed. Also click on the box that says maintain pitch (unless you also want the clip pitch to speed up, i.e the clip on helium). Then click OK. Now cut the clip a few seconds in and right click on the clip to the right of the cut. Repeat the speeding up process again as above. You will have to experiment on how many cuts and how long each cut is depending on how slowly or quickly you want the audio to accelerate.

January 31st, 2006, 11:14 AM	#3
Eric Edmondson New Boot Join Date: Apr 2005 Location: Lakewood, CO Posts: 12	Thanks for the tip Barry. I've tried it that way, but it's very difficult to keep the right time between beats as it speeds up. I was really hoping I might be able to "ramp it up" like you can with volume. Maybe it's just not something Premiere can do. I hear Acid can easily do it, maybe I'll have to try it. Cheers~

February 3rd, 2006, 11:04 AM	#5
Eric Edmondson New Boot Join Date: Apr 2005 Location: Lakewood, CO Posts: 12	Thanks Jean-Francois, I'll give after effects a try.

February 11th, 2006, 10:26 PM	#7
Eric Edmondson New Boot Join Date: Apr 2005 Location: Lakewood, CO Posts: 12	I've been messing around with AE, and while I found the time remapping, I can't figure out how to use it (I have next to no experience w/ AE). Would anyone be willing to post a quick outline of the steps necessary to achieve the effect? I normally wouldn't ask, but I'm pushing it really close to the submission deadline for a local festival, so I'm getting desperate. Thanks for all the info everyone! Cheers~ Eric

February 13th, 2006, 01:24 AM	#8
Mitja Popovski Regular Crew Join Date: Jun 2005 Posts: 38	why to do it in AE, if you have dedicated software for that: adobe audition, it is very easy to do it in there, in fact, when it was named cool edit it was the best software for time stretching and compressing, (today any audio editor can do it) right click on clip in AP and choose edit in adobe audition

February 13th, 2006, 05:58 PM	#9
Eric Edmondson New Boot Join Date: Apr 2005 Location: Lakewood, CO Posts: 12	Ok, I have somewhere I can use audition, can you tell me how to ramp up the speed of an audio track with it? I've given it a look, and I'm lost... Thanks.

February 14th, 2006, 01:58 AM	#10
Mitja Popovski Regular Crew Join Date: Jun 2005 Posts: 38	In AA2.0 go to effects/time,pitch/stretch