Features include Multi-channel support for synchronous pitching of up to 8 audio channels; Real time: no offline pre-analysis required; Program independence: high pitch shifting quality for all audio types (speech, single-voiced, classical/popular music, etc.); Phase coherence: absolute phase stability between all channels; MIDI input: for pitch control; Formant shifting: shift formants independent from pitch; Factory presets: for typical film pull-ups/pull-downs.  

èlastique was an immediate hit when I installed it into a Pro Tools HD 3 Accel system at my Tones 4 $ Studios. I liked it for two very important reasons: great sound and the intuitive and simple interface. Looking kinda like a virtual Roland Kaoss Pad, the GUI has two main faders. Pitch is controlled with a vertical fader while a horizontal fader controls timbre or the formants. (Formants are a set of resonant frequency bands associated with the formation of vowels) Upon the plug-in's instantiation; both faders are linked so that a single center joystick or "puck" simultaneously adjusts both to preserve the formant/pitch relationship. But you can unlink the two faders to alter pitch and timbre separately for fantastical effects.

My first use was to create a twelve-string guitar sound from a single guitar track. By copying the guitar track, placing it 150ms ahead of the original (èlastique's latency at 48kHz) and shifting it up a perfect octave (+12 semitones) I was able to mix that high sound with the original for a great twelve-string sound that was glitch-free and very real sounding.

Since èlastique is MIDI controllable, I next copied a Fender bass guitar part, again offset it and "replayed" the part on my USB/MIDI keyboard controller. Striking a middle C (C3) plays the original pitch and I had an octave above and below to select "new" notes--this is a fabulous ability--especially since the bass player had left the building!