Not Strictly A Renoise Question, But Its Related....

As everybody knows, Renoise doesn’t have a time stretch effect, so i’ve been doing some work in Audacity speeding up/ slowing down and pitching up/ pitching down without effecting either one and then importing into Renoise

Anyways, my work process so far is, get acapella, and play along with track in Renoise, rising/decreasing the pitch to make it fit the tempo…

So now i have this information, i want to use it to speed up the acapella in audacity (without changing the pitch)

I put the same untouched sample into Audacity and all works well until i get to the value which i should change… its in percent… fucks sake, why can’t music production be simple? haha, tis a joke

So you guys, here is my question… what percentage does each semitone represent???

(virtual tenner its dBlue who gets it first… he’s rather clever)

P.S what are the rules with Renoise collabing with audacity pitch shifting wise? anybody spoken to these fellas? They got some very decent stuff going on with their algorithms…

Haha :P

Assuming that you’re using the usual Western scale, this will help:…ual_temperament

There are also some nice online music calculators:…calculator.html

  • more that are pretty easy to find on Google.

And this is how the cheap version of dBlue offers support :P

Presuming that in audacity, 100% speed up is 2x the original speed, then you’d speed up 8.3333333333333% for one semitone. If they represent 2x as 200%, and no change as 100%, you’ll want to speed it up to 108.333333333% to go up a semitone.

Yep! :D

I was definitely exhausted last night. I still am today… after a very shitty night of almost no sleep at all, despite taking an evil sleeping pill, and the few minutes of sleep I did get were filled with psychotic, agitated dreams, making me wake up in a sweat… goddamn insomnia!

I would just adjust the BPM until it matches the vocal tempo…
Even if it has to be 127.032 BPM. (decimals are supported)

thanks for the help guys… burial rip offs coming to you soon…

But the relationship between notes/semitones is logarithmic rather than linear, so it’s not quite as easy as calculating 100% / 12 = 8.333% and then multiplying that value by the number of semitones you want to transpose. You kinda have to be aware of the notes you’re transposing to and from, since the ratios between them can be different.

If you reference the table I linked to earlier, it provides some pre-calculated values for each note.