ChatGPT Tempo/Time Calculator

[Paulie]

Years ago I created a spreadsheet to help me determine which tempos to use for clean 30 and 60 second edit points. I was toying with the idea of creating a smartphone app for it, but ChatGPT has eliminated that need. I created a video to show you how to use ChatGPT to help you with this:

https://www.youtube.com/watch?v=cvi9GKoA4LA

[ochaim]

alternatively, you can use this:

time(in sec) /(#beats in bar x 1/bpm x 60) = #bars

ie at bpm 96 and 4 beats per bar, how many bars needed for 30 sec edit

30sec / (4 x (1/96bpm) x 60) = 12 bars (rounded down)

with some algebraic manipulation, you can isolate for BPM if you have the other variables, but i’m not sure why you’d do that since natural reverb tails would throw things off.

it worked for some other examples i tried but let me know if you run into any errors

[edmondredd]

that's quite intersting
I use https://toolstud.io/music/bpm.php in order to calculate the duration of my beats to be able to place markers in ms for gaming purposes
They do have a tool to calculate the length of a song based on the tempo, the bpm and the signature

[chartzog]

alternatively, you can use this:

time(in sec) /(#beats in bar x 1/bpm x 60) = #bars

ie at bpm 96 and 4 beats per bar, how many bars needed for 30 sec edit

30sec / (4 x (1/96bpm) x 60) = 12 bars (rounded down)

with some algebraic manipulation, you can isolate for BPM if you have the other variables, but i’m not sure why you’d do that since natural reverb tails would throw things off.

it worked for some other examples i tried but let me know if you run into any errors

Thanks for sharing this! I will save this in my toolbox of useful engineer information!

[Telefunkin]

Its always interesting to see how others work, but I simply add a 30s (or whatever length) ruler to the DAW project with the right end at the end of the track, then work out how to make the new start just inside the left end (which is what you'd have to do anyway). Therefore, as long as I can flip between a time-based grid and a bar/beat-based grid in my DAW there's no need for calculations or AI assistance, but each to his own, and whatever works best/easiest/fastest is the right way to go.

My usual method is to look for the nearest entry point inside the left end of the ruler. It might be close to the start of a bar or phrase, so I chop everything before that point and maybe add a short drum fill or riser into the bar/phrase if I'm a bit short, or adjust the ring-out length, or adjust the ending by adding/subtracting a repeats(s) of the last phrase or hit. I might also slide the ruler around by a beat or two to get everything spot on. There's always a way to keep it sounding musical and its rare that there's any great difficulty. YMMV

[Paulie]

I do the same thing, I drag a looping ruler for whatever section I need, 0:15, 0:30 etc. BUT, knowing good tempos makes it easier to write music that naturally ends at the required time. You want time edits to sound natural.