Doepfer A-104

Formant filters is one of the main subjects when talking about synthesizers emulating human voices. So the term "formant" in the product description would suggest this filter may do just that job. But it is nothing more than a multi band cut-off and resonance filter, definititely not the formant in a rather morphing context. Obviously you'd need more modules for this purpose. The resonance section has an interesting subharmonic tendency when turning the knobs to the max. I do keep it as to polish the stand-alone Neutron ouput to make it sound warm and lush. So incidentally a nice unintentional add-on.