"Baking" Playback Rate

I've been messing with playback rate and want to bake it into the audio file. I'm using Adobe Audition, but can't work out how to convert playback rate into 'Stretch and Pitch' or similar effect.

Any help would be swell.

I've been messing with playback rate and want to bake it into the audio file. I'm using Adobe Audition, but can't work out how to convert playback rate into 'Stretch and Pitch' or similar effect.

Any help would be swell.

I do a lot of sound, so I might be able to help. But what do you want to do exactly with the wave form? Some of your terminology is a bit foreign to me. Could you explain in more detail please

EDIT@ If you want to stretch, change the pitch and then export, I'll be honest, don't know how to do it in AA, but I know how to do it in daws. You can just download

I believe Audacity can also do this with the Effect: Sliding Time Scale/Pitch Shift

Thanks for the replies guys!

megatronx so I think I want to change the speed. Playback rate is described as follows:

[quote:2xqzs7iq]Indicates the current playback speed of the audio/video.

Example values:

1.0 is normal speed

0.5 is half speed (slower)

2.0 is double speed (faster)

-1.0 is backwards, normal speed

-0.5 is backwards, half speed

In Adobe Audition the only option related to speed is 'Stretch and Pitch':

So if my playback rate is 0.1, what does that convert to in stretch/pitch and pitch shift? I tried stretch 1000% (0.1 speed = 1000% stretch) but the stretch maximum value is 800%.

You can just download http://www.reaper.fm , which is free

You are aware it is actually a shareware and after 60 days you either delete it or buy a license, right ?

Audition may be a bit too in depth for what you need to do, as it seems to give you a bit more control than you really need. The stretch is the time domain and the pitch shift is the frequency domain, and it is generally more suited to adjusting speech from what I can tell. But it seems that as long as you keep 'Lock Stretch and Pitch Shift' ticked then it should keep the correct behaviour as long as you change the 'Stretch' percentage. So 100% is regular, 50% is x2 playback etc... I'm not sure off the top of my head why the 800% limit is there but it's safe to say that you don't want to be shifting tihngs that far generally. But if you want to hit 1000%, run it twice on the same sample - 500% the first time and 500% the second time should get you the same result

untune that's brilliantly helpful, thanks!

Shouldn't it be 500% the first time and 200% the second time? Otherwise you end up with a 2500% stretch

Fimbul Yes you're right, I knew something didn't seem right but I tested it quickly with different numbers and it sounded correct, typical!

thehen By that logic what you should really do is run it once at 500% and then once more at 200% to half it again like Fimbul says. But still that's a long way to be pushing a sample so ensure you use sounds with the highest sample rate you can manage, to preserve as much quality as you can. I think Audition is a bit confusing in the way it presents things, there's probably a much simpler pitch shifting tool out there - Audacity is free but the effects are pretty simple, that's probably a better option

I just realised what I did - I quickly rendered one at 400% and then ran 200% twice on the original and got the same result without realising that I was effectively just halving it twice, ie the same as 400%. It's been a long day, I need to go home and lie down...

> You can just download http://www.reaper.fm , which is free

>

You are aware it is actually a shareware and after 60 days you either delete it or buy a license, right ?

Yeah, but shareware doesn't block out any features <img src="{SMILIES_PATH}/icon_e_smile.gif" alt=":)" title="Smile"> You're only getting 5sec splash screen. I've got my license.

untune That's why I suggested reaper, because stretching there is super simple, and you dont need to render, or "bake" to hear how it sounds, you got everything running within seconds <img src="{SMILIES_PATH}/icon_e_smile.gif" alt=":)" title="Smile">

thehen If you still have problem, you could use that reaper, and I could just direct you trough skype and shared screen. It would literally take a minute.