This Ableton tutorial walks through the Pitch Shifting mode in Shifter, covering how the device moves audio up or down in semitones or cents using the Coarse and Fine controls, while preserving the harmonic relationships between frequencies. That makes it practical for real-time pitch correction, transposing, or layering harmonies.
The Window control shapes the quality of the shift itself. Longer window sizes tend to work better for low-frequency material, while shorter windows suit high-frequency content, so dialing this in by ear is the right approach.
The Tone control rolls off high-end harshness that pitch shifting can introduce, which is a common artifact when shifting by larger intervals. Enabling Wide causes the Fine control to push the left and right channels in opposite directions, generating stereo width from the shift. Setting Fine to zero collapses the effect entirely, so the widening scales directly with the Fine amount.