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
Figure 2 from Interaction between source and filter in vowel identification | Semantic Scholar
Will Savin | Vowel Filter
Modor Music Formant Filter - Eurorack Module on ModularGrid
Vocawah- Vowel Shift Filter- Guitar Effects by Subdecay
Limaflo Motomouth Formant Filter | MUSIC STORE professional
Formant Filtering Example | Introduction to Digital Filters
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
Free Formant Filter | VST Warehouse
Modor Formant Filter
How to Make a Vowel Filter in FL Studio 12 - YouTube
Filtering for Vowels
Grendel Formant Filter | Rare Waves
Illustration of the source-filter representation of vowels. The upper... | Download Scientific Diagram
AudioThing The Orb Formant Filter Plug-In (Download) 11-31564