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Patent US3752929A successfully refreshed from Google Patents.
US3752929A
Expired / Lapsed
US
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Process and apparatus for determining the degree of nasality of human speech
Assignee: Individual
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Filing: 1971-11-03
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Granted: 1973-08-14
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Expires: 1991-11-03
Abstract
Abstract A process and apparatus is described in which electric signals representative of the sounds emitted from the nose and mouth are utilized to determine the degree of nasality of speech. Separate electric signals are derived from sounds emitted from the nose and mouth and these are compared one to the other and then the resultant signal is compared with a signal representative of a known degree of nasality. A form of apparatus suitable for carrying out the process is disclosed, including means separately to impress the nasal and oral signals onto separately functioning microphones.
Inventors
- 👤 S Fletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:07
CPC Classifications
G; G10; G10L; G10L25/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
136 words
In apparatus for analyzing continuous human speech to indicate the degree of nasality thereof comprising: a. means to produce separate electric signals directly from the sounds emitted from the nasal and oral passages of a person being tested, b. means to which said signals are separately fed and effective to emit separate signals representative of the proportionate intensity of each signal within a predetermined frequency range, c. means to which the signals from the means set forth in (b) above are fed and effective to generate another signal which represents the ratio of said signals which ratio is representative of a known degree of nasality d. means to compare said ratio signal to a signal representing a known degree of nasality, and e. indicating means responsive to the signal obtained from the means of (d) above.
Claim 2
Dependent Claim
136 words
In apparatus for analyzing continuous human speech to indicate the degree of nasality thereof comprising: a. means to produce separate electric signals directly from the sounds emitted from the nasal and oral passages of a person being tested, b. means to which said signals are separately fed and effective to emit separate signals representative of the proportionate intensity of each signal within a predetermined frequency range, c. means to which the signals from the means set forth in (b) above are fed and effective to generate another signal which represents the ratio of said signals which ratio is representative of a known degree of nasality d. means to compare said ratio signal to a signal representing a known degree of nasality, and e. indicating means responsive to the signal obtained from the means of (d) above.
Claim 3
Dependent Claim
81 words
Apparatus as defined in claim 1 in which the means set forth in (a) of claim 1 comprises an internally baffled housing disposed when placed adjacent the face of a person to provide a pair of sound chambers, one of which chambers communicates with the nasal passages and the other of which communicates with the oral passage, and microphones in each of said chambers by which the sounds emitted from the nose and mouth are caused to produce separate electric signals.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |