Formant Filter

If your music doesn't get enough "Aahs" and "Oohs", maybe you should try putting them into the actual music? Formant Filter shapes the sound in a similar way to how the vocal tract works, leading to vowel-esque sounds. So, channel your inner robo-Tarzan.
Aaaaoooeoeeeoeeeee!

The Formant Filter will boost two frequencies to mimic the sounds of different vowels.

Vowel Selector
Selects two frequencies to boost. We've put the phonetic symbols of some common vowel sounds on the selection pane. (Honestly that doesn't help much. I have no idea how ɤ sounds anyway.)

Applying a LFO modulation to either axis of the pane can give some nice human-esque qualities to your sound.
Q knob
Adjust how powerful and narrow the frequency boost is.
Lows
Allow low frequencies through the filter.
Highs
Allow high frequencies through the filter.
Settings panel
Whenever you have your mouse cursor over a snapin there is a small arrow at the top right corner (not visible in screenshot). It opens a settings panel where you handle presets.

It also has a "randomize" button that can be useful. I guess...
Enabled checkbox
The small checkbox to the left of the plugin name is a checkbox that bypasses the effect when disabled.
Resize handle
The bottom right corner of all Kilohearts plugins is a resize handle for scaling the UI to any size. This allows you to get a good view of the controls whatever the screen resolution, and also comes in handy if you need big controls, e.g. when using Formant Filter as a real-time effect on a touchscreen monitor during a live set. (This is not available when the snapin is used inside a snapin host.)

Formant Filter is a snapin

Kilohearts plugins work great together, and all the snapins can work double duty as modular components inside our snapin hosts. There are several different hosts that allow you to apply any number of snapins in various contexts, like to each individual band in the band-splitter Multipass, or add your full effects chain right inside the preset of the synth Phase Plant.

Download and installation

With your confirmation email you will get a download link to the Kilohearts Installer (1.69 MB download, EXE/DMG installer). It will quickly help you with the setup and installation of the plugins you purchased, and any others you might like (like the other free ones). It is personalized for you, so no need to copy-paste any licenses.

Payments are securely handled by 2Checkout.

All Kilohearts plugins are available through the installer as 64-bit VST, AU and AAX plugins for Windows and Mac. Most of them are also available for Propellerheads Reason, but if you are a Reason user you have to get your plugin through the Propellerhead Shop.

The Kilohearts Toolbox

The snapins work best together and the Kilohearts Toolbox offers heavy bundle discounts. It is divided into tiers so you can start out with what suits you the best!