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Network PA System for tool to large-scale projectsIntroductionThe XC-9000 system is a completely electronic network PA system based upon the TCP/IP method. By leveraging the TCP/IP method, the system ensures the effective and right transmission of all information packages. Not only can it utilize existing computer system networks, such as LANs or t

When a effectively-corrected lens is made use of in place of a pinhole, the geometrical ray divergence is removed via the focussing action of the lens, and also a much bigger aperture might be employed; in that case the diffraction spreading gets compact indeed. The graphic of a degree formed by a great lens is usually a moment pattern of concentri