Homer_Dudley_(October_1940)._"The_Carrier_Nature_of_Speech"._Bell_System_Technical_Journal,_XIX(4);495-515._--_Fig.8_Schematic_circuit_of_the_voder.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:
MODULATORS I RADIATOR I SPEECH i MECHANICAL

Text Appearing After Image:
Fig. 8—Schematic circuit of the voder. original speech message in terms of a modified set of parameters. Thisanalyzer suppresses the original carrier of the talker and so resemblesthe demodulator in radio reception. The analyzer acts as an electricalear to tell the artificial vocal system of the vocoder what to say, thewhole vocoder acting as a synthetic mimicker. The basic similarity of the electrical and human speech synthesizersis seen in these figures. In all three cases the message is originatedby the brain of the sender of the speech information. There is in eachcase a transmission of control impulses by the talkers nervous systemto the appropriate muscles. The muscles produce displacements ofbody parts formulating the speech information as a set of mechanicalwaves. These waves appear in the vocal tract in the case of normalspeech; in the fingers, wrist and foot in the case of the voder, but inthe case of the vocoder use is made of electrical currents derived fromand equivalen

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Date
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Image from page 532 of "The Bell System technical journal" (1922)

References

Fig.8 Schematic circuit of the voder from: Dudley, Homer (October 1940). "The Carrier Nature of Speech". Bell System Technical Journal XIX (4): 509.
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Other versions
  • Homer Dudley (October 1940). "The Carrier Nature of Speech". Bell System Technical Journal, XIX(4);495-515. -- Fig.6 Block diagram of the voice mechanism.jpg
    Homer Dudley (October 1940). "The Carrier Nature of Speech". Bell System Technical Journal, XIX(4);495-515. -- Fig.6 Block diagram of the voice mechanism.jpg
  • Homer Dudley (October 1940). "The Carrier Nature of Speech". Bell System Technical Journal, XIX(4);495-515. -- Fig.7 Schematic circuit of the vocoder (derived from Fig.8).jpg
    Homer Dudley (October 1940). "The Carrier Nature of Speech". Bell System Technical Journal, XIX(4);495-515. -- Fig.7 Schematic circuit of the vocoder (derived from Fig.8).jpg
  • Homer Dudley (October 1940). "The Carrier Nature of Speech". Bell System Technical Journal, XIX(4);495-515. -- Fig.8 Schematic circuit of the voder.jpg
    Homer Dudley (October 1940). "The Carrier Nature of Speech". Bell System Technical Journal, XIX(4);495-515. -- Fig.8 Schematic circuit of the voder.jpg
Volume
InfoField
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:532
  • bookcollection:prelinger_library
  • bookcollection:additional_collections
  • bookcollection:americana
  • BHL Collection

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