PCM-Multiplexed Audio in a Large Audio-Video Routing Switcher

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Broadcast quality audio signals are now supplied to the NBC Television Network after pulse-code-modulation (PCM) processing. The 12-bit PCM system and the biphase modulation techniques described in this paper allow six multiplexed signals (video, four audio, and data) to use a common crosspoint while maintaining exceptional isolation among all signals. The heart of the system is a 32-thousand crosspoint (100 × 320) routing switCher which supplies the audio and video signals required for network services and supports all in-house production and recording needs for the NBC New York plant.
Publication Date: 1976-11-01
DOI: 10.5594/J07529
Link: https://doi.org/10.5594/J07529
Author(s): R. J. Butler

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R. J. Butler; PCM-Multiplexed Audio in a Large Audio-Video Routing Switcher, SMPTE Journal ( Volume: 85, Issue: 11, November 1976); SMPTE, 1976. Available at https://doi.org/10.5594/J07529

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R. J. Butler; PCM-Multiplexed Audio in a Large Audio-Video Routing Switcher, SMPTE Journal ( Volume: 85, Issue: 11, November 1976); SMPTE, 1976. Available at https://doi.org/10.5594/J07529

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R. J. Butler; PCM-Multiplexed Audio in a Large Audio-Video Routing Switcher, SMPTE Journal ( Volume: 85, Issue: 11, November 1976); SMPTE, 1976. Available at https://doi.org/10.5594/J07529

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<span class="citation">R. J. Butler; <cite>PCM-Multiplexed Audio in a Large Audio-Video Routing Switcher</cite>, SMPTE Journal ( Volume: 85, Issue: 11, November 1976); SMPTE, 1976. Available at <a href="https://doi.org/10.5594/J07529" target="_blank" rel="noopener">https://doi.org/10.5594/J07529</a></span>

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R. J. Butler; PCM-Multiplexed Audio in a Large Audio-Video Routing Switcher, SMPTE Journal ( Volume: 85, Issue: 11, November 1976); SMPTE, 1976
doi: 10.5594/J07529
url: https://doi.org/10.5594/J07529

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<li>
R. J. Butler; <cite id="bib-10-5594-j07529">PCM-Multiplexed Audio in a Large Audio-Video Routing Switcher</cite>, SMPTE Journal ( Volume: 85, Issue: 11, November 1976); SMPTE, 1976
<span class="doi">10.5594/J07529</span>
</li>