9 digital and analog audio and video mixing, routing, processing and storage equipment, namely, mixing consoles and matrix mixing units for use in the braodcasting, live performance and recording industries; sound amplifiers and parts therefor; control devices, namely, hand held, desk or wall mounted system control units for connection to digital signal processors and installed sound management systems; computer software for storing, recalling, editing and manually updating audio parameters; digital signal processors for use in installed sound management systems providing computer controlled audio manipulation in the form of equalization, compression, limitation, expansion, docking and other associated effects