Filter Types

Filter Window

These controls are identical across all engines and also available in the DynFilter effect.

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The Formant Filter

Formant Window

When the formant window is selected, the FilterType list is replaced by an Edit button, and clicking on this opens the window shown. These controls are additional to the others and adjust individual formants and the vowels they are contained in. Also, remember that the formant filter interacts with the filter envelope.

For a deep understanding of formant filtering there is a highly detailed Wikipedia article Here.

The Formant Graph

You can control some of the parameters by placing the mouse pointer over the yellow lines representing each formant. While making changes, the respective controls will move accordingly.

Holding down either left or right mouse buttons and moving the mouse sideways will change the formant's center frequency.

Moving vertically while holding down the left button will change the amplitude. Alternatively holding down the right button changes the formant's Q factor.

Anywhere on the graph, the scroll-wheel changes the octave range, and holding Shift at the same time changes the center frequency.

If your mouse has extra buttons on the sides (many haven't) these can be used to switch between the formants instead of moving the mouse across to the next one.

This is especially useful for controling most of the formant features one-handed, quickly, while also playing on a keyboard.