Re: [Audacity-devel] Feature Request

[Ted F. <fines@Macalester.edu>]

Hi,

Thanks.  I just added it to the Wiki.

Ted

--On Saturday, October 23, 2004 3:18 PM -0700 Vaughan Johnson 
<vjo...@co...> wrote:

> Ted Fines wrote:
>
>> Hi all,
>>
>> Audacity is a great program and would be even more useful for me if it
>> had the following feature:  In addition to being able to adjust the
>> speed of a clip, by percentage points, I also would like to just be
>> able to enter the speed I want the resulting clip to be, and have
>> Audacity figure it out.
>>
>> For instance, I have a 19.36 second clip, and I want it to be 21.5
>> seconds long.  I'd like to be able to just tell Audacity to make it
>> 21.5 seconds long, and have Audacity figure out the percentage and do it.
>>
>> A Windows shareware program, GoldWave (http://www.goldwave.com) does
>> this, and for the work I do, I use it all the time.  I wouldn't have
>> to use it at all (and switch back and forth between my Mac and
>> Windows) if Audacity could do this.
>>
>> And while we're on the topic, I'd also like to be able to enter the
>> time in either in min:sec.sec, but also in min:sec.frames.  Where
>> frames=1-30, corresponding to 30 frames/sec vieo display rate.  10
>> frames = 10/30 sec = .33 seconds, etc.
>>
>> Thanks,
>> Ted
>>
>
> That's easy enough to add to the UI. Would you please post your
> suggestion to the Wiki
> (http://audacityteam.org/wiki/index.pl?FeatureRequests)? There are *many*
> suggestions pending for Audacity.
>
> In the meantime, you can just keep a calculator app open and calculate
> the percentage change to enter in Audacity's Change Speed. That's much
> easier than switching machines and audio apps. Here's all the math you
> need:
>
> Let
>     S = source length
>     T = target length
> Then desired percentage change P = ((S / T) - 1.0) * 100.0
>
> For example, if S=5 and T=10, i.e., then P = ((5/10) - 1) * 100 = -50.0
> which is right because to double the length, you want to halve the speed.
> For your example, P = -9.99534884.
>
> -Vaughan
>
>
>
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