Voice Tweaker is a powerful pitch shifting tool designed for monophonic audio signals such as vocals or solo instruments. It allows transposition of pitch up to two octaves in either direction while maintaining natural sound quality, avoiding unnatural chipmunk or monster effects unless intentionally applied. The software also enables simultaneous formant shifting by the same range, ensuring realistic voice transformations and creative sound design possibilities.

In addition to pitch shifting, Voice Tweaker offers an advanced pitch correction section that operates seamlessly with MIDI input. This feature automatically adjusts pitch to fit selected musical scales and keys, supporting over 60 preset scales along with custom scales created via Scala files. Real-time pitch correction responds to MIDI notes, allowing instant changes in key and scale, making it suitable for live performance and studio production.

The plugin further enhances control with features such as auto vibrato with adjustable delay and ramp times, a versatile LFO with multiple waveforms, and a modulation matrix with four assignable targets. Users can fine-tune the reference frequency, mix processed and original signals, and configure MIDI controls for various parameters. Voice Tweaker also includes a customizable pitch detection engine, delivering precise and responsive pitch manipulation suited for both corrective and creative applications.