Rubber Band is an open source library with a commercial licence option. It is developed and maintained with care, prioritising reliability, output quality, compatibility across releases and platforms, and performance, in roughly that order.
We welcome and encourage bug reports for the Rubber Band Library. We're happy to receive them by almost any channel. The most usual are as Github issues or by contacting us directly.
Please try to provide enough information for us to reproduce the problem. At the minimum this includes details of platform, compiler, and library configuration, as well as a description of the expected and problematic behaviour. We appreciate that describing issues relating to audio output can be tricky, and we may ask you to send or provide further information such as audio examples.
Please be aware that we cannot directly merge pull requests. This is partly for technical reasons (the Github repository for the library is a read-only mirror of an upstream repo) and partly for control of copyright and provenance.
Github pull requests may still be appropriate if you have small fixes, particularly fixes to the build system or documentation, that would be convenient to upstream. We will gratefully read and consider PRs, especially of this sort.
If you have any more substantial changes you would like to see included, please contact us directly to discuss.
An excellent way to contribute to the continued development of Rubber Band Library is to buy a commercial licence.
For enhancements and other new development work, it may be possible to engage Particular Programs Ltd at a commercial rate. Please contact us for details.