Glits

Glits

GLITS is an acronym for Graham's Line Identification Tone System, a test signal for stereo systems devised by BBC TV Sound Supervisor and Fellow of the IBS 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.

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This arrangement has an advantage over the EBU stereo ident tone (see below) in that each channel is explicitly identified as belonging to a stereo pair.

The EBU Technical Document [http://www.ebu.ch/CMSimages/en/tec_doc_t3304-2005_tcm6-35883.pdf Multichannel Audio Line-up Tone] (Tech 3304) defines stereo lineup tone has having an interruption in the left channel only, lasting 250 ms every 3 s.


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