An entirely new technology is described that accurately measures the stereo separation that resides within an audio program. This measurement is made with whatever complex waveforms happen to constitute the left and right channel. A computer cross-correlates the multiple frequencies, phases, and amplitudes comprising the
It is now possible to transmit clear pictures over new, and existing coaxial cable for up to a mile with no picture detail degradation using the new APR-474 AUTOMATIC PICTURE REJUVENATOR at the receiving end of the coaxial cable. This will open up many picture
This graph illustrates the picture quality obtained when sending a CCTV picture through various lengths of RG59/U cable and the restoration of picture quality obtained by using the ACE472 at the monitor end of the system.
Picture quality can be defined by many different parameters, but the most important from an observed picture detail point of view is the LINES OF DEFINITION as observed on a Monitor. The larger the "number of lines" that can be distinguished , the greater the
FM SYSTEMS, INC. in Santa Ana, CA. introduces a new product called the GB-60 GROUND-LOOP BLOCKER. This product blocks and removes the most common problems in CCTV video installations. The GB-60 also restores the picture quality before it goes to the monitor or recorder.
Santa Ana, California. FM SYSTEMS, INC. has developed a new noise reduction system that can reduce noise in program audio sources such as telephone call-in, old recordings, or video and audio tape by as much as 25 dB.
FM SYSTEMS, INC. Santa Ana CA. has developed an intercom and signaling product that uses the existing coax in any CCTV installation for two-way audio communication. For access control it also provides a contact closure in each direction for alarms or to open doors.