Joachim's Tethys filter (08-Feb-09) Planet Filter Series
screenshot

Tethys

A high quality highpass and lowpass filter that uses 48-bit precision butterworth algorithms.

Lowpass freq.
Sound will be gradually attenuated above this frequency. When set to the highest value, the lowpass filter is disabled to preserve CPU.

Lowpass ord.
The steepness (order) of the filter. The steeper the roll-off, the more resonance-like the filter will sound (but there is no resonance involved.) This parameter might not be suitable for automation.

Lowpass resonance
This adds a peak at the lowpass filter cut frequency. At 0 dB the effect is disabled.

Highpass freq.
Sound will be gradually attenuated below this frequency. When set to the lowest value, the highpass filter is disabled to preserve CPU.

Highpass ord.
The steepness (order) of the filter. The steeper the roll-off, the more resonance-like the filter will sound (but there is no resonance involved.) This parameter might not be suitable for automation.

Highpass resonance
This adds a peak at the highpass filter cut frequency. At 0 dB the effect is disabled.

Inertia
To make the filter more usable in music composing, i've added an inertia parameter, that only affects the lowpass and highpass frequencies. It does not affect the steepness (poles) parameters, because these tend to click when changed.

Analog
At "OFF" this is bypassed. Higher values adds a simple atan() simulation of output distortion.


What the filter does:
 Here you can see what the steepness (order) of the filter does to the frequency curve. Resonance is set to 0 dB in this image.

filter example
Plug-in written by Joachim Michaelis
 Homepage | Latest machines | VUmeter.exe

DISCLAIMER:
This software may be distrbuted freely but not modified. The author of this software cannot be held responsible for any damage caused directly or indirectly by using this software. Für Nebenwirkungen und Risiken, fragen Sie bitte ihrer Artzt oder Apotheker.