MORPH AU from Zynaptiq is a real-time, Audio Units plug-in for Mac OS X that performs structural audio morphing, the sonic equivalent of one object slowly changing its shape to another. The software takes two input signals, A and B, and creates two separate morphing transitions from them simultaneously. It estimates physical models for the two inputs in real-time, and then shapes one model to become the other - transforming one sound into the other 'structurally.'
The two sounds are completely different. This makes it possible for example, to add or combine small amounts of either of the two input signals, solo one of them for quick reference, control the morphing X/Y control via MIDI controllers, add a hint of hall reverb or widen the stereo image for sweetening purposes. Additionally, it's possible to crossfade between them for more sonic options, all achieved using just a single two-dimensional "X/Y" control. Create seamless morphing transitions, hybrid sounds that combine aspects of existing ones, physically impossible instruments, robot voices, talkbox-esque effects, and more.