Description

zb.lineShift is a delay-line-based pitch shifter. It applies constant incerement in delay time to induce a constant pitch-shift. The discontinuities are avoided by cross-fading two delay lines that are out of phase with each other. It preserves the harmonic relationship between the frequency components.

The shift parameter controls the constant by which the pitch is shifted (in cents 100 cents = 1 semitone)

The window size parameter controls the rate of the crossfade between two delay lines.