Magnetic Recorders Improved for 70-db Signal-to-Noise Ratio

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 74, No. 8, pp. 660–663
Abstract: Existing magnetic recorders and re-recorders may be improved to equal or exceed the performance of new equipment by methods reduced to practice for the first time. More than 70-db subjective signal-to-noise ratio is consistently recorded and reproduced with reduced dropouts and less distortion. Transient response is greatly improved. Recording head employs novel focused gap field and heavier bias at higher frequency. Associated circuitry uses silicon transistors for optimum performance without loss of thermal stability. Applications are discussed.
Publication Date: 1965-08-01
DOI: 10.5594/J06019
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J06019
Author(s): D. P. GreggGauss Electrophysics, 1850 Westwood Blvd., West Los Angeles, Calif. 90025.
Keith O. JohnsonGauss Electrophysics, 1850 Westwood Blvd., West Los Angeles, Calif. 90025.
Copyright: © 1965 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Johnson Keith O. , “Techniques for achieving wide dynamic range in magnetic recorders,” Jour. Aud. Eng. Soc. , 12 : 308 – 311 , Oct. 1964 . EXTERNAL
2. Eldridge D. F. Daniel E. D. , “New approaches to AC-biased magnetic recording,” IRE Trans. Audio , AU-10 : 72 – 78 , May-Jun. 1962 . EXTERNAL
3. Eldridge Donald F. , “The mechanism of AC-biased magnetic recording,” IRE Trans. Audio , AU-9 : 155 – 158 , Sep.-Oct. 1961 . EXTERNAL
4. Carson Robert H. , U. S. Naval Research Lab., Washington, “Drop-outs in instrumentation magnetic-tape recording systems,” IRE Trans. Audio , AU-10 : 112 , Jul.-Aug. 1962 . EXTERNAL
5. McKnight John G. , “A comparison of several methods of measuring noise in magnetic recorders for audio applications,” IRE Trans. Audio , AU-8 : 39 – 42 , Mar.-Apr. 1960 . EXTERNAL
6. Mullin John T. , “Advanced tape mastering system: Electronic features,” Jour. Aud. Eng. Soc. , 12 : 298 – 302 , Oct. 1964 . EXTERNAL
7. Joyce Maurice V. Clarke Kenneth K. , Transistor Circuit Analysis , p. 240 . Addison-Wesley Publ. Co. , Palo Alto, Calif. , 1961 . EXTERNAL

Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J06019.json

Reference Tree

Explore all references and references to this document, as a navigable tree.

Open Reference Tree

Reference this Doc

Plain text (ISO 690 compliant)

Preview:

D. P. Gregg and Keith O. Johnson; Magnetic Recorders Improved for 70-db Signal-to-Noise Ratio, Journal of the SMPTE ( Volume: 74, Issue: 8, August 1965); SMPTE, 1965. Available at https://doi.org/10.5594/J06019

Snippet:

D. P. Gregg and Keith O. Johnson; Magnetic Recorders Improved for 70-db Signal-to-Noise Ratio, Journal of the SMPTE ( Volume: 74, Issue: 8, August 1965); SMPTE, 1965. Available at https://doi.org/10.5594/J06019

HTML (ISO 690 compliant)

Preview:

Snippet:

<span class="citation">D. P. Gregg and Keith O. Johnson; <cite>Magnetic Recorders Improved for 70-db Signal-to-Noise Ratio</cite>, Journal of the SMPTE ( Volume: 74, Issue: 8, August 1965); SMPTE, 1965. Available at <a href="https://doi.org/10.5594/J06019" target="_blank" rel="noopener">https://doi.org/10.5594/J06019</a></span>

SMPTE's HTML Pub

Preview:

D. P. Gregg and Keith O. Johnson; Magnetic Recorders Improved for 70-db Signal-to-Noise Ratio, Journal of the SMPTE ( Volume: 74, Issue: 8, August 1965); SMPTE, 1965
doi: 10.5594/J06019
url: https://doi.org/10.5594/J06019

Snippet:

<li>
D. P. Gregg and Keith O. Johnson; <cite id="bib-10-5594-j06019">Magnetic Recorders Improved for 70-db Signal-to-Noise Ratio</cite>, Journal of the SMPTE ( Volume: 74, Issue: 8, August 1965); SMPTE, 1965
<span class="doi">10.5594/J06019</span>
</li>

Referenced By

Progress Committee Report for 1965 [Active]