US4419540A
Expired / Lapsed
US
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Speech synthesis system with variable interpolation capability
Assignee: Texas Instruments Inc
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Filing: 1981-10-05
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Granted: 1983-12-06
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Expires: 2001-10-05
Abstract
Abstract A speech synthesis system with a linear predictive filter. The linear predictive filter utilizes coded reflection coefficients to produce digital signals representative of human speech. A variable interpolation circuit within the linear predictive filter allows a variable number of interpolation steps to be calculated between successive values of reflection coefficients. Additionally, a user programmable option allows the user to select a linear, nonlinear, or a combination form of interpolation based on stored scale data. The synthesizer output circuit also functions as a digital-to-analog converter.
Inventors
- 👤 Alva E. Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:41
CPC Classifications
G; G10; G10L; G10L13/00; G10L13/02; G10L13/04; G09; G09B; G09B19/00; G09B19/06; G10L19/00; G10L2019/0001; G10L2019/0012
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
A speech synthesis system comprising: input means for receiving frames of data, said frames of data comprising speech data and interpolation data; digital storage means for storing scale data; address means coupled to said input means and said digital storage means for selectively addressing specific scale data in response to said interpolation data; interpolation means coupled to said input means and said digital storage means for interpolating between adjacent frames of said speech data based upon said specific scale data; synthesizer means coupled to said input means and to said interpolation means for selectively converting said speech data into signals representative of human speech; and means coupled to said synthesizer means for producing audible sound.
Claim 2
Dependent Claim
115 words
A speech synthesis system comprising: input means for receiving frames of data, said frames of data comprising speech data and interpolation data; digital storage means for storing scale data; address means coupled to said input means and said digital storage means for selectively addressing specific scale data in response to said interpolation data; interpolation means coupled to said input means and said digital storage means for interpolating between adjacent frames of said speech data based upon said specific scale data; synthesizer means coupled to said input means and to said interpolation means for selectively converting said speech data into signals representative of human speech; and means coupled to said synthesizer means for producing audible sound.
Claim 3
Dependent Claim
129 words
A speech synthesis system comprising: input means for receiving frames of data, said frames of data comprising speech data and coded interpolation data; decoding means coupled to said input means for decoding said coded interpolation data; digital storage means for storing scale data; address means coupled to said decoding means and said digital storage means for selectively addressing specific scale data in response to said decoded interpolation data; interpolation means coupled to said input means and said digital storage means for interpolating between adjacent frames of said speech data based upon said specific scale data; synthesizer means coupled to said input means and said interpolation means for selectively converting said speech data into signals representative of human speech; and means coupled to said synthesizer means for producing audible sound.
Claim 4
Dependent Claim
129 words
A speech synthesis system comprising: input means for receiving frames of data, said frames of data comprising speech data and coded interpolation data; decoding means coupled to said input means for decoding said coded interpolation data; digital storage means for storing scale data; address means coupled to said decoding means and said digital storage means for selectively addressing specific scale data in response to said decoded interpolation data; interpolation means coupled to said input means and said digital storage means for interpolating between adjacent frames of said speech data based upon said specific scale data; synthesizer means coupled to said input means and said interpolation means for selectively converting said speech data into signals representative of human speech; and means coupled to said synthesizer means for producing audible sound.
Claim 5
Dependent Claim
23 words
The speech synthesis system according to any one of claims 1 or 2, wherein said digital storage means comprises a nonvolatile memory means.
Claim 6
Dependent Claim
23 words
The speech synthesis system according to any one of claims 1 or 2, wherein said digital storage means comprises a random access memory.
Claim 7
Dependent Claim
25 words
The speech synthesis system according to any one of claims 1 or 2, wherein said scale data represents a plurality of linearly related fractional values.
Claim 8
Dependent Claim
25 words
The speech synthesis system according to any one of claims 1 or 2, wherein said scale data represents a plurality of nonlinearly related fractional values.
Claim 9
Dependent Claim
23 words
The speech synthesis system according to any one of claims 1 or 2, wherein said means for producing audible sound comprises a speaker.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |