search

breakfastquay / rubberband

Official mirror of Rubber Band Library, an audio time-stretching and pitch-shifting library.
http://breakfastquay.com/rubberband/
GNU General Public License v2.0
580 stars 92 forks source link

48khz wave vs 44.1khz wave any difference? (highest quality?) #107

Closed geextahslex closed 3 weeks ago

geextahslex commented 3 weeks ago

Hi, as I can't find any information about how this is handled by rubberband I want to know if rubberband gives a better result with a 48khz wave input instead of 44.1khz?

Also I would like to know how to get the highest quality possible?

Use case is a whole music track with vocals, melody, drums etc.

Thank you :)

cannam commented 3 weeks ago

44.1 vs 48 kHz should make no perceptible difference. The results won't be identical - the stretcher operates at the rate it is given, it doesn't resample to a single rate internally - but it is tuned and tested at both of these rates and there is no reason I am aware of why either of them would sound any better overall than the other.

With recent versions of the command-line tool, using the R3 engine with centre focus (and otherwise default settings, or perhaps with formant correction if pitch-shifting vocals) should generally give the best results. That's rubberband -3 --centre-focus.

geextahslex commented 3 weeks ago

Thanks for this information. rubberband -3 --centre-focus is also what I ended up using. I made recently a small ranking on reddit