Version 3.0.0 of Rubber Band Library is now available.
Rubber Band Library is an audio time-stretching and pitch-shifting library and utility designed for musical applications. It allows you to change the tempo and pitch of an audio recording independently of one another.
This is an exciting major release which, among other things,
introduces an entirely new processing engine known as the R3 or Finer
engine. This typically produces substantially higher-quality output
than the existing engine (now referred to as R2 or Faster), although
at higher CPU cost. The more energy-efficient R2 is still the default,
and R3 can be selected using the new
OptionEngineFiner option on
We're immensely proud of the work we have done for this release, and we hope it will delight you and all the users of your software.
Although we have added to the API in this release, the library continues to be both binary and API compatible with the 2.x and 1.x releases for existing applications. Code written to use earlier versions of the library can link and run against this version without alteration.
Existing commercial licences remain valid for v3.0.0.