The Ideas Behind the Instruments
Rossum ships not just hardware but the thinking behind it. Dave Rossum has spent five decades advancing synthesis and sampling; these are the concepts at the heart of each instrument.
Every Rossum instrument is built on an idea worth understanding: phase modulation, spectral resynthesis, thru-zero filtering, Z-plane morphing. Learn the concept and the controls stop being a mystery. Each guide is written by the engineers who built the instrument.
Concept Guides
Assimil8or
Understanding Phase Modulation
Read → EVOLUTIONA Ladder Filter with Continuously Variable Character
Read → LINNAEUSWhat a Thru-Zero State-Variable Filter Does
Read → MORPHEUSHow Z-Plane Morphing Works
Read → PANHARMONIUMHow Spectral Resynthesis Works
Read → SP-120012-Bit Bliss
Read → TRITONHow Zing Modulation Works
Read →Engineering Track
Dave's Lab — Engineering Notes
Dave Rossum's own notes on circuit design and instrument history — written for the technically curious. A separate track from the concept guides above: not required reading to play the instruments, but useful background given the engineers among our clients.