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SMPTE Meetings and Conferences ( February 1980)
[ACTIVE]

Digital Audio Recording for Television: Some Choices

Metadata

Publisher
SMPTE — White Plains, NY
Doc Type
Conference Paper
Content Type
Original Research
Volume
1980, No. 13, pp. 164–175
Abstract
In concise form, some aspects of digital audio recording on videotape are discussed. It may be important for the specialist to know, in the next few years, answers to some related questions. Digital audio recording is briefly compared with bias (analog) audio recording. The essential elements of a digital recording system are mentioned; its accuracy is proportional to the number of bits available to measure a signal; its dynamic range is given by a multiple of this number plus a constant. Four methods for the digitization of an audio signal are described: linear digitization, nonlinear companding, floating point, and near-instantaneous companding. Sampling rates and their influence on bandwidth and interfacing are discussed. Alias components must be avoided, and the dc components of the signal must be suppressed or accommodated. In designing digital audio recording equipment, not only must there be given careful consideration to the physical arrangement of the recording heads and the corresponding track placement on the tape, but also to the concealment and correction of errors within the bit stream. General agreement on design practices will make recorders of various manufacturers freely interchangeable.
Publication Date
1980-02-01
DOI
10.5594/M00447
Link
https://doi.org/10.5594/M00447
Author(s)
E. Stanley BusbyAmpex Corp., Redwood City, Calif.
bio
E. Stanley Busby Jr. was born in Portsmouth, Virginia, in September 1927. His career spans 14 years in broadcasting at WTAR in Norfolk, Virginia, followed by 21 years with Ampex Corp. The last 16 years have been spent in engineering, mostly in quadruplex video recorder design. He has been a member of the SMPTE for two decades and is the author of an important tutorial on digital video that appeared in the July 1975 Journal. Currently Mr. Busby is Manager of the Audio Engineering Department at Ampex.
Copyright
© 1980 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • 4. Nyquist H. , “Certain Topics in Telegraph Transmission Theory,” Trans. AIEE , Vol. 47 , pp 617 – 644 , Apr. 1928 . EXTERNAL
  • 1. Cross M. G. Osborne D. W. Spicer C. R. , “The Present Distribution System and a Proposal for Bit-Rate Reduction by Digital Companding,” IBC 1974 , IEEE Conf. Pub. #119. EXTERNAL
  • 2. Tsividis Y. P. Gray P. R. Hodges D. A. Chacko J. , “A Segmented u-255 Law PCM Voice Encoder Utiliziang NMOS Techology,” IEEE Journal of Solid State Circuits . Vol. SC-11 , No. 6 , Dec. 1976 . EXTERNAL
  • 3. Osborne D. W. , “Further Investigation of Instantaneous and Other Rapid Companding Systems,” BBC Research Dept. No. 96, Nov. 1973 . EXTERNAL
  • 5. Heaslett A. M. , “Some Criteria for the Selection for Sampling Rates in Digital Audio Systems,” Journal Audio Eng. Society , May 1977 . EXTERNAL
  • 6. Jones H. A. , “Digital Sound and Television Recording - The Requirements of the Signal,” IEEE Transactions on Magnetics , Vol. MAG 11 , No. 5 , Sept. 1975 . EXTERNAL
  • 7. Mallinson J. C. Miller J. W. , “Optimal Codes for Digital Magnetic Recording,” The Radio and Electronics Engineer , Vol. 47 , No. 4 , pp 172 – 176 , Apr. 1977 . EXTERNAL
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E. Stanley Busby; Digital Audio Recording for Television: Some Choices, SMPTE Meetings and Conferences ( February 1980); SMPTE, 1980. Available at https://doi.org/10.5594/M00447
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E. Stanley Busby; Digital Audio Recording for Television: Some Choices, SMPTE Meetings and Conferences ( February 1980); SMPTE, 1980. Available at https://doi.org/10.5594/M00447

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E. Stanley Busby; Digital Audio Recording for Television: Some Choices, SMPTE Meetings and Conferences ( February 1980); SMPTE, 1980. Available at https://doi.org/10.5594/M00447
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<span class="citation">E. Stanley Busby; <cite>Digital Audio Recording for Television: Some Choices</cite>, SMPTE Meetings and Conferences ( February 1980); SMPTE, 1980. Available at <a href="https://doi.org/10.5594/M00447" target="_blank" rel="noopener">https://doi.org/10.5594/M00447</a></span>

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Preview:
E. Stanley Busby; Digital Audio Recording for Television: Some Choices, SMPTE Meetings and Conferences ( February 1980); SMPTE, 1980
doi: 10.5594/M00447
url: https://doi.org/10.5594/M00447
Snippet:
<li>
E. Stanley Busby; <cite id="bib-10-5594-m00447">Digital Audio Recording for Television: Some Choices</cite>, SMPTE Meetings and Conferences ( February 1980); SMPTE, 1980
<span class="doi">10.5594/M00447</span>
</li>