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28th March, 2023

Rubber Band Library versions 3.2.0 and 3.1.3 released

Two new releases of Rubber Band Library are 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 3.2.0 contains significant improvements to output quality for certain processing modes. Most notably, it updates the "centre-focus" mode for the R3 engine (OptionChannelsTogether) so as to retain mono compatibility in the resulting stereo output and to produce more coherent imaging in many situations. There are also small fixes to latency calculation in some modes. Version 3.2.0 may be downloaded from the main Rubber Band Library page.

Meanwhile version 3.1.3 is a pure bugfix release whose output is otherwise unchanged from 3.1.2. It is a recommended update for applications where changes to audio output are undesirable, or at least without substantial review. Version 3.1.3 may be downloaded from the download index page.

(Note that 3.2.0 does also include the fixes found in 3.1.3.)

The API is unchanged and 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 either of these versions without alteration.