[RWP] changing tempo in reaper.

[Roy Shtupler]

I think the keystroke for the detection is Alt+Shift+C.
cheers
Roy.
www.soundclick.com/tzackeek
----- Original Message ----- 
From: "Scott Chesworth" <scottchesworth at gmail.com>
To: "Reapers Without Peepers" <rwp at reaaccess.com>
Sent: Saturday, May 22, 2010 8:00 PM
Subject: Re: [RWP] changing tempo in reaper.


> Hi Derek,
>
> Only started exploring this myself last night, so forgive the
> inevitable rambling.
>
> For simplicity, let's assume you have a project with a single track of
> audio, you know it was recorded to a click, but you want to identify
> the original bpm then be able to adjust that at will.
>
> First, we need to ensure that the timebase for this track is set to
> time, rather than beats or position or anything else, otherwise when
> Reaper adjusts the project tempo it's also going to start tinkering
> with the playrate of the audio before we want it to. Set the timebase
> for the track in the track menu, or do it for the whole project in
> project settings if you prefer.
> Next, we need to mark out a bar (or measure on your side of the pond)
> for Reaper to be able to figure out the bpm. Place the time selection
> neatly around a measures worth of audio with Alt+Shift+[ and
> Alt+Shift+]. You can check the selection is neat by looping the
> selection, or my new favourite way is to jump to slightly before the
> start of the time selection and then use Alt+Space to play missing out
> that chunk you've selected. Whichever method you choose, if everything
> sounds neat and in time you should be good to go.
> Now, we need the actions list because by default this action isn't
> bound to a keystroke. Hit F4 to show the actions list, and type tempo
> into the filter box you land in. Tab round to the multi-select list
> box of choices, and choose "Set project time signiture / tempo from
> time selection...". Tab round to "Run/close", and you should be taken
> directly to the project settings box. Shift tab once will read you the
> new tempo Reaper has decided upon, and it's unlikely to be right on
> the money but it will be close if you're selection was accurate.
> Accept it, because annoyingly the box is read only at this stage. Now
> when you play the project, the click should be roughly right although
> it'll probably drift over time. Head back into Project Settings with
> Alt+Enter and adjust that tempo to the nearest whole number, and that
> should cure the drifting, think Reaper is a bit oversensitive.
> The last step is to make sure that your track or project timebase
> (whichever you modified earlier) are set back to "Beats (position,
> length, rate) so that the audio will sync. Now, if you try adjusting
> the project tempo in project settings, the track should sync to each
> change perfectly.
>
> FWIW, I've only tried this so far on quite standard tempo 4/4 stuff as
> time is of the escence here at the mo, but I'd assume it can work with
> other time sigs too because the boxes to specify those aren't read
> only at any stage, my guess is that the read only tempo box would
> recalculate if you typed in 6/8 or whatever.
>
> Hth
> Scott
>
> On 5/22/10, Derek Lane <derek at pdaudio.net> wrote:
>> I'm missing how to get audio to sync to tempo.  The autodetect features 
>> seem
>> to not be working, and checking the box to do this in the project 
>> properties
>> is doing nothing.  Can someone tell me what I'm missing or provide a step 
>> by
>> step reference as to how this is to be done?
>
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