Add some vowel sounds with The Orb formant filter plug-in - gearnews.com
The ORB Formant Filter By AudioThing - Show & Reveal - YouTube
Formant Filtering Example | Introduction to Digital Filters
The Orb - Formant Filter Plugin VST – Samplesound
Vocal Tract Models
Modor Formant Filter review | MusicRadar
フォルマントフィルタープラグイン、Will Savin「Vowel Filter」リリース | Computer Music Japan
Formant Filter - Omnisphere 2 - 2.8
Formant Synthesis
Vowel Form formant filter for Ableton live 10+ - Max Koko Music
Rare Waves - Grendel Formant Filter v2.2 coming soon. This is an unusual analog filter that modifies audio input to create vowel sounds and surreal vocal-esque tones. Updates to the original include