Change the tempo and pitch of audio on your Linux system.
Rubber Band Library for Linux is a software library for audio time-stretching and pitch-shifting. It permits you to change the tempo and pitch of an audio stream or recording dynamically and independently of one another. Rubber Band Library is a block-based phase vocoder with phase resets on percussive transients, an adaptive stretch ratio between phase reset points, and a "lamination" method to improve vertical phase coherence. It is implemented in portable C++, and it requires separate library support for the FFT and resampling implementations: for the Free Software edition, this means FFTW and libsamplerate (the proprietary edition supports other options as well).