Patent US4355204A successfully refreshed from Google Patents.
US4355204A
Expired / Lapsed
US
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Speech synthesizing arrangement having at least two distortion circuits
Assignee: US Philips Corp
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Filing: 1980-10-16
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Granted: 1982-10-19
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Expires: 2000-10-16
Abstract
Abstract This improved voice-excited speed synthesizer expands the voice-band spectrum to generate high-frequency band excitation signal by using two separate distortion networks: a full-wave rectifier for lower frequencies, and a limiter for higher frequencies. Channel and formant type voice excited embodiments are shown.
Inventors
- 👤 Karel Riemens
- 👤 Joannes G. M. Van Thuijl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:35
CPC Classifications
G; G10; G10L; G10L19/00; G10L19/02; G10L21/00; G10L21/02; G10L21/0316; G10L21/0364
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
165 words
An arrangement for synthesizing speech from a band of low-frequency components of a speech signal and a plurality of narrow-band control signals which are characteristic of a plurality of sub-bands of high-frequency components of the speech signal, comprising means for generating a band of high-frequency components from the band of low-frequency components, means for dividing the band of high-frequency components into a number of sub-bands corresponding to the sub-bands of high-frequency components of the speech signal, means for correcting by means of the control signals the sub-bands derived from the generated band and means for combining the band of low-frequency components with the corrected sub-bands of the generated high-frequency components to form a speech output signal, characterized in that the means for generating a band of high-frequency components comprises at least two circuits, each generating a band of high-frequency components from the band of low-frequency components of the speech signal, a portion of the number of sub-bands being derived from each of the generated bands.
Claim 2
Dependent Claim
165 words
An arrangement for synthesizing speech from a band of low-frequency components of a speech signal and a plurality of narrow-band control signals which are characteristic of a plurality of sub-bands of high-frequency components of the speech signal, comprising means for generating a band of high-frequency components from the band of low-frequency components, means for dividing the band of high-frequency components into a number of sub-bands corresponding to the sub-bands of high-frequency components of the speech signal, means for correcting by means of the control signals the sub-bands derived from the generated band and means for combining the band of low-frequency components with the corrected sub-bands of the generated high-frequency components to form a speech output signal, characterized in that the means for generating a band of high-frequency components comprises at least two circuits, each generating a band of high-frequency components from the band of low-frequency components of the speech signal, a portion of the number of sub-bands being derived from each of the generated bands.
Claim 3
Dependent Claim
61 words
An arrangement as claimed in claim 1, characterized in that a first circuit of the at least two circuits is formed by a full-wave rectifier circuit for generating a relatively low-frequency band of high-frequency components and that a second circuit of the at least two circuits is formed by a limiter circuit for generating a relatively high-frequency band of high-frequency components.
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) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |