Electronic sound mixing, processing and synthesizing apparatus, namely, audio mixing desks, signal mixing desks, sound mixing desks, audio mixing apparatus, audio mixing console apparatus, electric mixing consoles, and sound mixing apparatus; video mixing apparatus, namely, electronic video editing apparatus; matrix mixing units, namely, matrix switchers for audio and video signals; analogue sound modifiers, namely, electronic audio signal processors; analogue sound mixers; digital and analogue audio and video mixing, routing, processing and storage equipment, namely, mixing consoles and matrix mixing apparatus for use in broadcasting, live performance and recording industries; sound amplifiers and parts therefor; control devices, namely, hand held, desk or wall mounted system control apparatus 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, duckers and other associated effects; computer hardware, namely, network cards; sound cards; computer hardware, namely, computer interface cards; electronic integrated circuit cards; audio hardware mounting racks with integrated component connectors; hardware racks adapted to audio apparatus; interface expanders, namely, interface cards for data processing equipment in the form of printed circuits, computer network interface devices, computer network-attached storage (NAS) hardware, and wireless network extenders; parts and fittings for all the aforesaid goods