What kind of filter is a French Lowpass Filter?
In one example I know of, the Serum soft synth, there is a lowpass filter called the "French LP" under the "Misc" set of filters.
I suspect it may exist under a different name, possibly. At first I thought it might be a Butterworth filter, but it would be a misnomer, because Butterworth was a British inventor.
I don't know of many popular French synthesizers, but there are undoubtedly French software-based filter designers. Does anyone know what this filter might be modeled on?
More importantly, what differentiates it from a normal low pass filter?