Mul­ti­mode Fil­ters

Future Music - - REVIEWS -

Low-pass fil­ters are a main­stay of any sub­trac­tive syn­the­sis sys­tem, al­low­ing the spec­tral con­tent of rich raw wave­forms to be var­ied quickly and in­tu­itively. Other types of ana­logue fil­ter­ing are quite eas­ily achiev­able - and many vin­tage polysynths of­fer a global high-pass fil­ter to thin out the low-end, or even semi-in­de­pen­dent HPF and LPF in the case of some vin­tage Yamaha synths - but it is per­haps less com­mon to find mul­ti­mode de­signs like the one on this new AS unit. Ober­heim’s SEM mod­ule was one such ex­am­ple which, like Mr Hyde, fea­tures a sweep­able 12dB/oc­tave fil­ter. SEM-style synths have been at the core of Ana­logue So­lu­tions’ prod­uct cat­a­logue for many years.

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