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Can someone explain this tempo behavior?

madFloyd

madFloyd

Active member
I find myself fighting with the tempo in my song and don't know if I'm encountering a bug or I'm just misunderstanding how it should work.

In the screenshot below I show two tempo points, both at 115.00 yet if you look below at the actual tempo, it's 115.02.

Not only that but during playback it oscillates between 115.02 and 114.96

tempo weirdness.png


Any reason for this?
 
What does it say when you hover your mouse over those tempo points? The numbers shown on the tempo track round off to one decimal I think, omitting the 0 when it rounds off to that.

If you want 115 throughout then select all tempo points (select one and click Ctrl-A) and delete, and then type 115 in the status bar below. Or you can right-click individual points and type in the exact bpm value you want.
 
Last edited:
SwitchBack said:
What does it say when you hover your mouse over those tempo points? The numbers shown on the tempo track round off to one decimal I think, omitting the 0 when it rounds off to that.

If you want 115 throughout then select all tempo points (select one and click Ctrl-A) and delete, and then type 115 in the status bar below. Or you can right-click individual points and type in the exact bpm value you want.
Click to expand...

The points (upon right clicking) show 115.00 (and I've re-entered that value more than once to be sure).

My song varies tempo so I can't just delete all the points.

And of course it doesn't explain why it oscillates.
 
I can't reproduce this here, but my guess is that it's related to the 6/8 time signature. Tempo values in time signatures other than 4/4 seem to be converted internally, so the displayed tempo is different from the tempo used for internal calculations.

tempo.png


Seems steady here.
 
Or maybe it's the residue of a curved section in there? A little experiment will prove that curve information is still there when tempo points before and after the curve are set to the same value: The line between the two points seems straight, but move one of the points up or down and the curve reappears.
 
SwitchBack said:
Or maybe it's the residue of a curved section in there? A little experiment will prove that curve information is still there when tempo points before and after the curve are set to the same value: The line between the two points seems straight, but move one of the points up or down and the curve reappears.
Click to expand...

You might be on to something there. It certainly WAS a curve at some point and I was trying to figure out why and how to get it to be a straight line. I even asked the assistant how to straighten it but either I didn't understand the answer or it wasn't quite correct (not sure).

Going to investigate now, thanks!
 
madFloyd said:
You might be on to something there. It certainly WAS a curve at some point and I was trying to figure out why and how to get it to be a straight line. I even asked the assistant how to straighten it but either I didn't understand the answer or it wasn't quite correct (not sure).

Going to investigate now, thanks!
Click to expand...

It's no longer a curve, so not sure how relevant that is.

Glad Lukas is looking into it :)
 
I've always felt Studio Pro could do with list editing for tempo. Then you can be more precise - Digital Perfomer has this edit function and it seems a better system and probably less cumbersome than curves and tiny edit points.
 
Horses for courses I guess. I like the tempo curves and the way it lines up with the song, but sometimes a list can be easier to manipulate multiple points...
 
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