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Title: US3770892: CONNECTED WORD RECOGNITION SYSTEM

Country: US United States of America

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21 pages

 
Inventor: Clapper, Genung Leland; Raleigh, NC

Assignee: International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 1973-11-06 / 1972-05-26

Application Number: US1972000257254

IPC Code: Advanced: G10L 15/00; G10L 15/02; G10L 15/10;
IPC-7: G10L 1/02; G10L 1/16;

ECLA Code: G10L15/00; T05K999/99;

U.S. Class: Current: 704/251; 704/221; 704/235; 704/277;
Original: 179/001.SB;

Field of Search: 179/1 SA,1 SB,1 VS,15.55 R

Priority Number:
1972-05-26  US1972000257254

Abstract:     A system is disclosed which recognizes connected or separate spoken words based on the concatenation of steady state sounds produced by a speaker enunciating a given word for which a definitive array of steady state sounds has previously been entered into the system during a learning period.

Attorney, Agent or Firm: Edward H. Duffield et al. ;

Primary / Asst. Examiners: Claffy, Kathleen H.; Leaheey, Jon Bradford

INPADOC Legal Status: None          Buy Now: Family Legal Status Report

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First Claim:
Show all 10 claims
What is claimed is:     1. A method of automatically recognizing spoken words, comprising the steps of:
  • separating full bandwidth electronically manifested and amplified speech signals in an analyzer for passing individual sub-bandwidth components according to frequencies;
  • sensing continuously at a delayed time following a start signal the steady-state output condition signals from said analyzer sub-bands to determine which of said signals are above a continuously defined and varying voltage threshold;
  • storing in a temporary storage device at times determined by clocking signals generated by a clock whose clocking rate is dependent on the speakers's production of steady-state vocal sounds and on time delays built into said clock which are activated in response to said vocal sounds the patterns of information signals indicative of which of said sensed outputs are above said threshold and also indicative of which of said outputs are below said threshold;
  • comparing said temporarily stored signal patterns with other patterns of signals previously stored in a memory means and identifying the best individual match therebetween for each said temporarily stored pattern;
  • signalling the information results of said comparison step for each said temporarily stored signal pattern;
  • storing sequentially said information signals from said comparison step as uniphone codes for the steady-state speech signals sensed in said sensing step; and
  • recognizing groups of said sequentially stored uniphone codes as words by means of a uniphone sequence-to-word conversion device library, thereby identifying said spoken words.


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Forward References: Show 25 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (25)   |   Backward references (5)   |   Citation Link

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PDF
Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 9pp US3234392  1966-02 Dickinson   Photosensitive pattern recognition systems
Get PDF - 13pp US3204030  1965-08 Olson   Acoustic apparatus for encoding sound
Get PDF - 12pp US2685615  1954-08 Biddulph   Voice-operated device
Get PDF - 14pp US3280257  1966-10 Orthuber   Method of and apparatus for character recognition
Get PDF - 19pp US3172954* 1965-03 Bezar    
  * some details unavailable
       
Foreign References: None

Other References:
  • Olson, Speech Processing Systems, IEEE Spectrum, 2/1964 p. 90 - 102.
  • Clapper, Connected Word Recognition System, , IBM Technical Disclosure Bulletin, 12/69 p. 1123-1126.


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