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Title: US4817161: Variable speed speech synthesis by interpolation between fast and slow speech data
[ Derwent Title ]


Country: US United States of America

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18 pages

 
Inventor: Kaneko, Hiroshi; Tokyo, Japan

Assignee: International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 1989-03-28 / 1987-03-19

Application Number: US1987000027711

IPC Code: Advanced: G10L 13/06; G10L 13/08; G10L 21/00;
IPC-7: G01L 1/00;

ECLA Code: G10L13/08; T05K999/99;

U.S. Class: Current: 704/267; 704/241;
Original: 381/051; 364/513.5;

Field of Search: 381/036-40,51-53 364/513.5

Priority Number:
1986-03-25  JP1986000065029

Abstract:     The present invention relates to a speech synthesis system of the type which comprises synthesis parameter generating means (5, 6, 7, 8, 10, 11) for generating reference synthesis parameters (p, q) representing items of speech, and storage means (4) for storing the reference synthesis parameters. The system also comprises input means (1) for receiving an item of text to be synthesised, analysis means (15) for analysing the item of text, calculating means (13, 16) utilising the stored reference synthesis parameters and the results of the analysis of the item of text to create a set of operational synthesis parameters representing the item of text, and synthetic speech generating means (6, 7, 9, 17) utilising the created set of operational synthesis parameters to generate synthesised speech representing the item of text. According to the invention the system is characterised in that the synthesis parameter generating means comprises means for generating a first set of reference synthesis parameters in response to the receipt of a first item of natural speech, and means for generating a second set of reference synthesis parameters in response to the receipt of a second item of natural speech. The calculating means utilises the first and second set of reference synthesis parameters in order to create the set of operational synthesis parameters representing the item of text.

Attorney, Agent or Firm: Block, Marc A. ; Schechter, Marc D. ;

Primary / Asst. Examiners: Roskoski, Bernard;

Maintenance Status: E2 Expired  Check current status

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Designated Country: DE FR GB IT 

Family: Show 6 known family members

First Claim:
Show all 22 claims
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent is:     1. A speech synthesis process comprising the steps of:
  • (a) generating, for each of synthesis units for speech synthesis, a plurality of first data portions, each having a fixed period length, from a first speech data representing each of said synthesis units;
  • (b) generating, for each of said synthesis units, the same number of second data portions as that of said first data portions, each of said second data portions corresponding acoustically to each of said first data portions, from at least one second speech data representing each of said synthesis units, said second speech data extending over a duration different from that of said first speech data;
  • (c) determining a synthesis unit to be synthesized;
  • (d) determining a target duration of said determined synthesis unit;
  • (e) determining a period length of each of a series of synthesis frames, said series of synthesis frames extending over said determined target duration of said determined synthesis unit and comprising the same number of frames as that of said first data portions, by interpolation based on said determined target duration of said determined synthesis unit, with reference to each of period lengths of said first and second data portions for said determined synthesis unit, each of said first and second data portions corresponding to each of said synthesis frames;
  • (f) determining synthesis parameters to each of said synthesis frames, by interpolation based on said determined target duration of said determined synthesis unit, with reference to each of synthesis parameters of said first and second data portions for said determined synthesis unit, each of said first and second data portions corresponding to each of said synthesis frames; and
  • (g) synthesizing a speech based on said determined period length and synthesis parameters of each of said synthesis frames.


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Forward References: Show 11 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (11)   |   Backward references (2)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 14pp US2575910  1951-11 Mathes   Voice-operated signaling system
Get PDF - 14pp US4470150  1984-09 Ostrowski  Federal Screw Works Voice synthesizer with automatic pitch and speech rate modulation
       
Foreign References: None

Other Abstract Info: DERABS G87-272805

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