Crossfeed is the process of blending the left and right channels of a stereo audio recording. It is generally used to reduce the extreme channel separation often featured in early stereo recordings (e.g., where instruments are panned entirely on one side or the other), or to make audio played through headphones sound more natural, as when listening to a pair of external speakers.

This is a companion discussion topic for the original entry at https://copr.fedorainfracloud.org/coprs/fedpop/ladspa-bs2b-plugins/