File:Homer Dudley (October 1940). "The Carrier Nature of Speech". Bell System Technical Journal, XIX(4);495-515. -- Fig.5 The voder being demonstrated at the New York World's Fair.jpg

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Identifier: bellsystemtechni19amerrich
Title: The Bell System technical journal
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company
Subjects: Telecommunication Electric engineering Communication Electronics Science Technology
Publisher: [Short Hills, N.J., etc., American Telephone and Telegraph Co.]
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

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Text Appearing Before Image:
Fig. 4—^The vocoder as demonstrated. Circuit diagrams supply a shorthand for expressing the sahent fea-tures of electrical circuits. In the next three figures comparative blockcircuits will be shown for the human and the two electrical speechsynthesizers, tracing the communication from the origin of an idea inthe communicators brain to final expression as speech. In each cir- CARRIER NATURE OF SPEECH 507

Text Appearing After Image:
Fig. 5—The voder being demonstrated at the New York Worlds Fair. cuit, the arrangement in Fig. 2 will be followed with sufficient detailto show the functional relations of the parts discussed in this paper.Figure 6 gives a block diagram of the voice mechanism of Fig. 1with approximating electrical circuit symbols. The same communica-tion paths can be traced. Thus from the talkers brain are sent nerveimpulses that set up the message as a set of muscular displacementscontaining information as to the voice carrier to use, the fundamentalfrequency for the voiced carrier, and the selective transmission of thevocal tract. The air expelled from the lungs sets up as carriers the 508 BELL SYSTEM TECHNICAL JOURNAL

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Image from page 530 of "The Bell System technical journal" (1922)

References

Fig.5 The voder being demonstrated at the New York World's Fair from: Dudley, Homer (October 1940). "The Carrier Nature of Speech". Bell System Technical Journal XIX (4): 507.
Author Internet Archive Book Images
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(Reusing this file)		 Internet Archive Book Images @ Flickr Commons
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19
Flickr tags
InfoField
  • bookid:belltelephonemag19amerrich
  • bookyear:1922
  • bookdecade:1920
  • bookcentury:1900
  • bookauthor:American Telephone and Telegraph Company
  • booksubject:Telecommunication
  • booksubject:Electric_engineering
  • booksubject:Communication
  • booksubject:Electronics
  • booksubject:Science
  • booksubject:Technology
  • bookpublisher:_Short_Hills__N_J___etc___American_Telephone_and_Telegraph_Co__
  • bookcontributor:Prelinger_Library
  • booksponsor:Internet_Archive
  • bookleafnumber:530
  • bookcollection:prelinger_library
  • bookcollection:additional_collections
  • bookcollection:americana
  • BHL Collection

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