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A tone-operated gain adjusting device, or "Togad," was built that varied the volume of the replayed sound under the control of a tone of varying amplitude. This device was the predecessor of the automated mix-down systems found in modern recording studios.
The RC-5 protocol was developed by Philips in the early 1980s as a semi-proprietary consumer IR remote control communication protocol for consumer electronics.It was subsequently adopted by most European manufacturers, as well as by many US manufacturers of specialty audio and video equipment.
A fire alarm control panel Fire alarm speaker and pull station. Fire alarm systems are composed of several distinct parts: Fire alarm control panel (FACP), or fire alarm control unit (FACU): This component, the hub of the system, monitors inputs and system integrity, controls outputs, and transmits information.
European Siren for fire detection system. A fire alarm notification appliance is an active fire protection component of a fire alarm system. A notification appliance may use audible, visible, or other stimuli to alert the occupants of a fire or other emergency condition requiring action.
The fire detection and fire alarm system subcommittee of ISO/TC 21, Equipment for Fire Protection and Fire Fighting, had oversight for development of five standards covering detectors, control and indicating equipment. ISO 7240-2:3003 specifies requirements, test methods and performance criteria for control and indicating equipment (c.i.e.) for ...
Donald Trump will be assuming the office of U.S. president on Jan. 20, 2025, and his return to the role could usher in a wide variety of economic changes. Trump has promised to lower taxes, reduce ...
High school football enthusiasts who want to place a bet on a big game have no choice but to turn to an offshore site. Accepting a wager on high school sports is outlawed in Nevada and other U.S ...
Receivers in base stations, or repeaters at remote mountain top sites, are usually not adjustable remotely from the control point. In two-way radios (also known as radiotelephones), the received signal level required to unsquelch (un-mute) the receiver may be fixed or adjustable with a knob or a sequence of button presses. Typically the ...