I’m releasing SLTune, a free pitch-correction plug-in for monophonic vocals.

It handles gradual correction and hard tuning, with custom note sets, MIDI targets and an adjustable A4 reference (420–480 Hz). Formant shifting covers ±24 semitones, with a separate mix control and switchable tune/formant processing order.

Two LFOs provide tempo-synced modulation, including dotted and triplet rates. The second can switch to an envelope follower for voice-driven pitch and timbre changes.

LIVE reports 2 ms of plug-in latency at 48 kHz. HIGH uses 64 ms for cleaner formant processing; extreme shifts in LIVE can still produce artifacts. Interface and buffer latency are additional.

Available as AU for Apple Silicon Macs and VST3 for Windows x64 with English manual.

Images: https://imgur.com/a/kvJd9Qk

Download: https://www.dropbox.com/scl/fo/9xr8s129oytqi9oonlnme/ABJlQzAkOKCuLcSeouUGP1I?rlkey=kv2e1v34los4iuw89f4mt0g10&dl=0