ZOP

Output digital signal processor that provides network audio routing and zone digital signal processing functions for specific integrated network amplifier units; digital audio paging and control systems comprised of public announcement audio controllers for public address systems, message communication servers, user-operated input and output audio communication stations, peripheral interface devices for digital electronic devices, recorded computer software and firmware for controlling and operating digital audio paging and control systems, microphones, audio amplifiers, audio speakers, and electronic equipment racks sold as a unit of digital audio paging and control systems