Version 4.0.0 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.
Version 4.0.0 is a major release which adds a new API,
RubberBandLiveShifter, which is simpler to use than the general
RubberBandStretcher interface in cases where only pitch-shifting is
required. For more general purposes the original interface is still
the proper one.
The rest of the API is otherwise unchanged, so the library continues to be binary 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.