1987-04-30, English, Article, Journal or magazine article edition: Consider standard features when selecting codecs: designer's guide to codecs - part 1. Barnes, Brady

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Physical Description
  • Magazine/​Journal article
Published
  • Canon Communications LLC, 1987 April 30
Language
  • English

Edition details

Title
  • Consider standard features when selecting codecs: designer's guide to codecs - part 1.
Appears In
  • EDN, v32, no.n9, 1987 April 30, p211(6) (ISSN: 0012-7515)
Author
  • Barnes, Brady
Published
  • Canon Communications LLC, 1987 April 30
Physical Description
  • Magazine/​Journal article
Subjects
Target Audience
  • Trade
Summary
  • Codecs are commonly used in the telecommunications industry for the encoding (analog-to-digital conversion) and decoding (digital-to-analog conversion) of the human voice. Codecs differ in: (1) encoding techniques (linear versus nonlinear), (2) word size (8- or 16-bits), and (3) bit rate. The article focuses on the type of codecs commonly used for the switching and transmissionof voice in digital systems and networks, and on only those codecs having on-chip filtering. Codec operation is detailed and a circuit schematic is provided for a typical single-chip codec-filter combination. The micro-law and A-law characteristics are explained and plotted. A table of representative power-dissipation specifications is also provided. Standard feature codecs are available for $4-$6 apiece in quantities of 10,000, while those with advanced features are $7-$9 apiece in similar quantities. Standard codec features are discussed in depth, and the advanced features are introduced as Part II of the article.
Language
  • English
Database
  • Gale Academic OneFile
  • Gale General OneFile
  • Gale Expanded Academic
Identifier
  • 6010540

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Bureau of Meteorology. National Meteorological Library. Open to the public Journals EDN; (Current 5 years) Periodical; Journal, magazine, other English
Charles Sturt University. Bathurst Campus Library. Open to the public 991012586935602357; Electronic Resource Periodical; Journal, magazine, other English
CSIRO. Library Services. Not open to the public 999612820001981; ProQuest Central (New). Online Access. Available for document delivery. Restrictions apply.; Available from 1994 until 2010; ProQuest SciTech Collection. Online Access. Available for document delivery. Restrictions apply.; Available from 1994 until 2010 Periodical; Journal, magazine, other English
CSIRO. Riverside Library. May not be open to the public 998986250001981; PA 621.38 ED; 2 years held (- 23 April 2009) Periodical; Journal, magazine, other English
Department of Agriculture and Fisheries Qld. Dept of Agriculture and Fisheries Qld Research Information Service. Not open to the public s edn; v.27(15)-; 1982-; incomplete Periodical; Journal, magazine, other English
Edith Cowan University. Edith Cowan University Library. Open to the public Periodical; Journal, magazine, other English
Federation University Australia Library. Open to the public PER 621.381 EDN; Vol.29, no.25-Vol.48; 1984-2003 Periodical; Journal, magazine, other English
Flinders University. Flinders University Central Library. Open to the public 9957262101771; 621.3805 E11 Periodical; Journal, magazine, other English
Griffith University. Griffith University Library. Open to the public .b13534890; Electronic Resource : Publ. may restrict Doc. Del. Periodical; Journal, magazine, other English
Methodist Ladies' College - Melbourne. MLC Libraries. May not be open to the public Not for ILL Periodical; Journal, magazine, other English
National Library of Australia. Open to the public 2278458; S 621.3104205 EDN; Vol. 19, no. 21-v. 40, no. 26 (1974-Dec. 21, 1995) {Imperfect} Periodical; Journal, magazine, other English
Plantagenet Shire Council Libraries. Mount Barker Library. Open to the public Held. Check holdings Periodical; Journal, magazine, other English
RMIT University. RMIT University Library. Open to the public 9912463060001341; PER 621.305 E24; Incomplete. Held in Storage. Request from <a href=http://www.rmit.edu.au/library/dds target=_blank>Document Delivery</a>; v. 19 (1974)-v. 46 (Sept. 27, 2001) Periodical; Journal, magazine, other English
SAE Creative Media Institute - Australia. SAE - Byron Bay. May not be open to the public Held. Not for ILL. Periodical; Journal, magazine, other English
Southern Cross University. University Library Lismore. Open to the public 991012584011302368; Subject to licence conditions Periodical; Journal, magazine, other English
The University of Sydney. University of Sydney Library. Open to the public Periodical; Journal, magazine, other English
University of Newcastle. University of Newcastle Library. Open to the public 621.381505/15; Vol. 18, no. 1-v. 45, no. 9; 1973-Apr. 2000 Periodical; Journal, magazine, other English
University of Wollongong. University of Wollongong Library. Open to the public Online access. Not available for document delivery Periodical; Journal, magazine, other English
UNSW Sydney. UNSW Library. Open to the public 9942642490001731; HELD; Vol. 35, no. 1 (Jan. 4, 1990)-v. 46, no. 28 (Dec. 20, 2001) Periodical; Journal, magazine, other English
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National Library of Australia. Open to the public 2278458; S 621.3104205 EDN; Vol. 19, no. 21-v. 40, no. 26 (1974-Dec. 21, 1995) {Imperfect} Periodical; Journal, magazine, other English
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Charles Sturt University. Bathurst Campus Library. Open to the public 991012586935602357; Electronic Resource Periodical; Journal, magazine, other English
CSIRO. Riverside Library. May not be open to the public 998986250001981; PA 621.38 ED; 2 years held (- 23 April 2009) Periodical; Journal, magazine, other English
SAE Creative Media Institute - Australia. SAE - Byron Bay. May not be open to the public Held. Not for ILL. Periodical; Journal, magazine, other English
Southern Cross University. University Library Lismore. Open to the public 991012584011302368; Subject to licence conditions Periodical; Journal, magazine, other English
The University of Sydney. University of Sydney Library. Open to the public Periodical; Journal, magazine, other English
University of Newcastle. University of Newcastle Library. Open to the public 621.381505/15; Vol. 18, no. 1-v. 45, no. 9; 1973-Apr. 2000 Periodical; Journal, magazine, other English
University of Wollongong. University of Wollongong Library. Open to the public Online access. Not available for document delivery Periodical; Journal, magazine, other English
UNSW Sydney. UNSW Library. Open to the public 9942642490001731; HELD; Vol. 35, no. 1 (Jan. 4, 1990)-v. 46, no. 28 (Dec. 20, 2001) Periodical; Journal, magazine, other English
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Department of Agriculture and Fisheries Qld. Dept of Agriculture and Fisheries Qld Research Information Service. Not open to the public s edn; v.27(15)-; 1982-; incomplete Periodical; Journal, magazine, other English
Griffith University. Griffith University Library. Open to the public .b13534890; Electronic Resource : Publ. may restrict Doc. Del. Periodical; Journal, magazine, other English
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Flinders University. Flinders University Central Library. Open to the public 9957262101771; 621.3805 E11 Periodical; Journal, magazine, other English
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Bureau of Meteorology. National Meteorological Library. Open to the public Journals EDN; (Current 5 years) Periodical; Journal, magazine, other English
CSIRO. Library Services. Not open to the public 999612820001981; ProQuest Central (New). Online Access. Available for document delivery. Restrictions apply.; Available from 1994 until 2010; ProQuest SciTech Collection. Online Access. Available for document delivery. Restrictions apply.; Available from 1994 until 2010 Periodical; Journal, magazine, other English
Federation University Australia Library. Open to the public PER 621.381 EDN; Vol.29, no.25-Vol.48; 1984-2003 Periodical; Journal, magazine, other English
Methodist Ladies' College - Melbourne. MLC Libraries. May not be open to the public Not for ILL Periodical; Journal, magazine, other English
RMIT University. RMIT University Library. Open to the public 9912463060001341; PER 621.305 E24; Incomplete. Held in Storage. Request from <a href=http://www.rmit.edu.au/library/dds target=_blank>Document Delivery</a>; v. 19 (1974)-v. 46 (Sept. 27, 2001) Periodical; Journal, magazine, other English
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