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Graham's Line Identification Tone System (GLITS) is a test signal for stereo systems devised by BBC TV Sound Supervisor and Fellow of the IPS Graham Haines in the mid-1980s. It comprises a 1 kHz tone at 0 dBu (-18 dBFS ) on both channels, with interruptions which identify the channels.
15 sinewave tones, all but the last 0.127 seconds in length with 0.023 seconds of silence between tones, of the following estimated frequencies: 50, 100, 250, 400, 640, 1010, 1610, 4000, 6350, 8100, 10100, 12600, 15200, and 18300 Hz, followed by 130 ms of silence, then 820 ms of a 15200 Hz tone. [4] (Used by EMI Canada in 1982, as SDR.)
Black & Lane's Ident Tones for Surround (BLITS) is a way of keeping track of channels in a mixed surround-sound, stereo, and mono world. [1] It was developed by Martin Black and Keith Lane of Sky TV London in 2004. BLITS is used by Sky, the BBC and other European and US broadcasters to identify and lineup 5.1 broadcast circuits.
In telecommunication, a standard test tone is a pure tone with a standardized level generally used for level alignment of single links and of links in tandem. [1]For standardized test signal levels and frequencies, see MIL-STD-188-100 for United States Department of Defense (DOD) use, and the Code of Federal Regulations Title 47, part 68 for other Government agencies.
The measured curves for pure tones, for instance, are different from those for random noise. The ear also responds less well to short bursts, below 100 to 200 ms, than to continuous sounds [ 1 ] such that a quasi-peak detector has been found to give the most representative results when noise contains click or bursts, as is often the case for ...
The Crutchfield Situation was an experimental procedure and apparatus created by Richard S. Crutchfield in 1955 to study conformity. Essentially, the Crutchfield Situation was an attempt to improve upon the methodology employed in the Asch conformity experiments. One of the major criticisms concerning the Asch studies was the need for many ...
Two-tone receiver testing using direct injection [8] Two-tone receiver testing using off-air method [9] A test setup suitable for testing receivers at microwave frequencies is shown in the figure. The two signal generators, F1 and F2, are combined using a directional coupler in reverse.
Test Card C [6] was a BBC television test card first broadcast in 1947. [2] It was the first test card to resemble the famous Test Card F. [5] Test Card C allowed adjustment and verification of parameters such as: [7] Aspect Ratio: central circles; Resolution: five gratings corresponding to frequencies of 1.0, 1.5, 2.0, 2.5 and 3.0 MHz