SL Tune vs MultiComb

SL Tune is a vocal pitch-correction and tone effect for iPhone and iPad. Insert it on a vocal track in a compatible AUv3 host. Choose a key and scale, or select the allowed notes yourself. Natural mode preserves small pitch movements, Hard gives faster correction, and Robot locks pitch to the selected root across octaves. Six controls shape the sound: Retune, Humanize, Formant, Snap, Echo and Mix. Formant changes the tonal balance. Mix blends processed and original audio. Start with one of six factory presets: Classic Hard, Trap Lock, Silk Vocal, Clean Fix, Robot Grid and Echo Adlib. Save and load your own presets locally. The resizable interface adapts to portrait, landscape and compact host windows. Use SL Tune as an AUv3 effect in a compatible music host, or open the standalone app to preview and adjust the controls. Pitch correction works best on a single vocal line. It is not designed to tune a complete mix or separate voices from background music.

MultiComb turns a bank of moving comb filters into a playable sound-design effect. Four independent comb voices create shifting resonances across the stereo field, each moving with its own timing, spacing, and character. Smooth modulation keeps the bank alive while Bite introduces stepped sample-and-hold disturbances that push individual combs into new resonant relationships. The result can move from hollow coloration and subtle animation to metallic ringing, mechanical movement, fractured resonance, and unstable tonal textures. MultiComb works across drums, vocals, pads, guitars, percussion, and full electronic textures—but it especially comes alive on leads, basslines, arpeggios, plucks, and other short-note sequences. Individual notes excite the comb bank differently, turning simple melodic or rhythmic patterns into animated, resonant phrases. Teeth reshapes the fundamental comb structure. Motion keeps it moving. Spread pulls the voices apart. Feedback lets resonances ring. Color moves from dark and hollow toward bright, steel-like character. And then there’s Bite. Bite introduces independent stepped disturbances across the comb bank. At restrained settings it adds little irregular catches and tonal shifts. Push it harder and the resonances begin snapping into fractured, metallic relationships of their own. Seven controls. Four combs. Lots of teeth. Features Four independently animated comb-filter voices Moving, evolving resonant structures Independent sample-and-hold disturbances across the comb bank Wide stereo spreading and voice separation Dark, hollow through bright, metallic tonal character Controlled high-feedback resonance Smooth continuous motion combined with stepped instability Particularly expressive on leads, basslines, plucks and short-note sequences Factory presets ranging from subtle coloration to fractured metallic textures