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A Zenith Space Command 600 remote control A box advertising a remote control system often referred to as "Space Command Tuning" The original television remote control was a wired version, released in 1950, that soon attracted complaints about an unsightly length of cable from the viewer's chair to the television receiver.
The central concept of the system is a unique number, a PlusCode, assigned to each programme, and published in television listings in newspapers and magazines (such as TV Guide). To record a programme, the code number is taken from the newspaper and input into the video recorder, which would then record on the correct channel at the correct time.
Despite these defects, the Flash-matic remained in high demand. In September 1955, Zenith apologized for its inability to meet the consumer demand. [4] [5] The Flash-matic was soon replaced by better control systems. The "Zenith Space Command" remote control went into production in 1956 with aims to improve upon the Flash-matic's design. [6]
1950s TV Remote by Motorola SABA corded TV remote. One of the first remote intended to control a television was developed by Zenith Radio Corporation in 1950. The remote, called Lazy Bones, [15] was connected to the television by a wire. A wireless remote control, the Flash-Matic, [15] [16] was developed in 1955 by Eugene Polley.
5.1 surround sound ("five-point one") is the common name for surround sound audio systems. 5.1 is the most commonly used layout in home theatres. [1] It uses five full-bandwidth channels and one low-frequency effects channel (the "point one"). [2] Dolby Digital, Dolby Pro Logic II, DTS, SDDS, and THX are all common 5.1 systems. 5.1 is also the ...
Surround sound is a technique for enriching the fidelity and depth of sound reproduction by using multiple audio channels from speakers that surround the listener (surround channels). Its first application was in movie theaters .
A four channel quadraphonic diagram showing the usual placement of speakers around the listener. Quadraphonic (or quadrophonic, also called quadrasonic or by the neologism quadio [1] [formed by analogy with "stereo"]) sound – equivalent to what is now called 4.0 surround sound – uses four audio channels in which speakers are positioned at the four corners of a listening space.
Ambisonics is a full-sphere surround sound format: in addition to the horizontal plane, it covers sound sources above and below the listener. [ 1 ] [ 2 ] Unlike some other multichannel surround formats, its transmission channels do not carry speaker signals.