

This directory contains filters.

Filters are the algortihms which really transform data from x to y.
Mostly the filters are used as an instance in a device.

Why distinguish filter/devices?

devices can apply a bunch of filters. This is because
a filter is a seperate class.
Then the source code of a device would get too long/complex if
it includes the (mostly) long and optimized filter source.

Devices must be thread safe whereas filters dont need to be
thread safe. (This makes developement of filters easier)




