Electromechanical effectors therefor, i.e. using springs or similar electromechanical audio delay units

Full Title

Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments > Musical effects > Acoustic effect simulation, i.e. volume, spatial, resonance or reverberation effects added to a musical sound, usually by appropriate filtering or delays > Reverberation or echo > Electromechanical effectors therefor, i.e. using springs or similar electromechanical audio delay units