United States-Patent [1'91

United States-Patent [1'91

U.S. PATENT DOCUMENTS 3,761,613 9/1973 Limb .......................... .. l79/l5.55R

' f 4,064,554 12/1977 Tubbs . . . . . . . . . . . .. 364/200

4,167,700 9/1979 Coe et a1. . l79/l.5 R V . 4,228,321 10/1980 Flanagan ........................ .. 1,79/l.5 S‘

INSTRUCTION DECODER

[11] 4,323,732 Wiggins et a1. [45] Apr. 6, 1982

[54] SPEECH SYNTHESIS SYSTEM WITH 4,230,906 10/1980 Davis .............................. .. 179/1 SA ALTERNATIVE CODED OR UNCODED PARAMETER FORMATS r I OTHER PUBLICATIONS I

‘[75] Inventors: Richard H. Wiggins, Dallas; Alva E. R' smnh’ Baudot to ASCII ’ RladlouElectromcs’ Apr‘ Henderson Lubbock both of Tex 1976’ pp‘ 57-59’ 82’ 83’ 86' ~

' ‘ ’ ’ ' E. Leefsma, “Morse Decoder”, Elektor (England), [73] Assignee: Texas Instruments Incorporated, Man 1977, pp 43_51_

' Dallas, Tex. ‘ v

, ' Primary Examiner—Mark E. Nusbaum [21] Appl' No‘ 118,367 Assistant Examiner—E. S. Kemeny . [22] Filed: ‘Feb. 4, 1980 , Attorney, Agent, or Firm-—William E. Hiller; Melvin

P Sharp; James T. Comfort . [51] Int. Cl.3 ....................................... ., ..... .. G10L 1/00

[52] US. Cl. .................... ,. 179/1 SM; 179/ 15.55 R [57] ‘ ABSTRACT

[58] Field “1332c? 7%ISE'LTIIf g‘lgg’é'ijllz)’ Speech parameter signals may be coded to consist of ' ~’ ' ’ ' ’ fewer bits for data reduction in memory. In this system

[56] “References Cited both coded and uncoded signals are stored with an associated control signal which controls selection of corresponding direct or decoder circuit coupling of memory output to a speech synthesizer.

6 Claims, 35 Drawing Figures

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coon-ran _,' COUNT

K 7, [32 £48 28 STATUS , l ‘ FC '

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U.S. Patent Apr. 6, 1982 Sheet 1 of 30 4,323,732

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US. Patent Apr. 6, 1982

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United States-Patent [1'91

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