Paraphonic
Pseudo Polyphonic, often means there are a number of Oscillators but only one Filter for all, mostly same with Envelopes, so accords will sound ok, but arpeggios with fast snapping envelopes will be a problem, but of course there is also a positive thing: since you can use this reduction musically..
anyway, a paraphonic synth is the Korg Poly800, 4 / 8 voices but only one Filter for all Voices. Some Organs and String Synths may also be paraphonic..
There is a Paraphonic Series by Roland.. other Word: Metaphonic..