Scale Tempo

 I often want to try different tempos in projects that have ritardandos (slow-downs). If I change the overall tempo, then I have to go in and and erase the ritard and insert a new series of tempos. (You can't have a song running at 120 BPM that starts slowing down at 130 BPM. By the same token, if you were smoothly slowing down from 120 to 80 and then change the base tempo to 140, there would be a sudden jump from 140 to 119.) What I need is a scale tempos command that changes all tempos by the same percent or, better yet, by the same number; for example, reduce all tempos by 5 BPM. Does this exist? Thanks.

I would like to see more tools developed for manipulating tempo without screwing up your project.

In my opinion, tasks such as like this are core roles of DAW sequencers while interior decoration of GUIs with redundant channel strips seems like a waste of time. It's frustrating to consider how many core DAW functions have been left in a primitive state for the past 20+ years.

I look forward to working with averaging tools and tools that make it easier to extract accelerations and decelerations from scratch tracks and then provide some sort of smoothing function.

Come on son!



best regards,
mike

It can be done. Here's the drill I've posted a number of times.  You can ignore the first step if the project is all-MIDI:

1. Enable Auto-stretch (a.k.a. Clip Follows Project in Auto-stretch mode) on all audio clips.
2. Select a MIDI or audio clip that runs the length of the project.
3. Go to Process > Fit to Time.
4. Convert the current Thru time to total frames (usually 30 frames/sec).
5. Divide that by the desired tempo change factor (e.g. 1.10 to get a 10% increase, 0.90 for a 10% decease).
6. Round and convert that new value to minutes:seconds:frames.
7. Enter that as the new Thru, and select Modify by Changing: Tempo Map.
8. Click OK.