Patent US3855418A successfully refreshed from Google Patents.
US3855418A
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Method and apparatus for phonation analysis leading to valid truth/lie decisions by vibratto component assessment
Assignee: Individual
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Filing: 1972-12-01
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Granted: 1974-12-17
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Expires: 1992-12-01
Abstract
Abstract A method and apparatus for indicating emotional stress in speech by detecting the presence of vibratto or rapid modulation of the phonation constituent within the speech signal envelope. The modulation is emphasized by rectification, smoothing, and time and amplitude discrimination of the speech wave form and is compared to a selected voltage level to produce a series of uniform pulses, the number of which is indicative of the magnitude of vibratto content.
Inventors
- 👤 F Fuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:38
CPC Classifications
G; G10; G10L; G10L17/00; G10L17/26
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
59 words
A method to detect emotional stress in the speech of an individual comprising: converting said speech to an electrical signal; smoothing said electrical signal to produce an envelope; isolating any rapid aperiodic amplitude modulations present on said smoothed envelope; counting the number of said rapid aperiodic modulations; and indicating the count per utterance which is indicative of emotional stress.
Claim 2
Independent Claim
59 words
A method to detect emotional stress in the speech of an individual comprising: converting said speech to an electrical signal; smoothing said electrical signal to produce an envelope; isolating any rapid aperiodic amplitude modulations present on said smoothed envelope; counting the number of said rapid aperiodic modulations; and indicating the count per utterance which is indicative of emotional stress.
Claim 3
Dependent Claim
37 words
A method as in claim 1 wherein said isolating includes: differentiating said smoothed electrical signal; and comparing said differentiated signal with a selected voltage level to produce a pulse for each differentiated signal above said selected voltage.
Claim 4
Dependent Claim
26 words
A method as in claim 2 including the step of rectifying said electrical signal before smoothing and wherein said smoothing comprises integrating said rectified electrical signal.
Claim 5
Independent Claim
84 words
A device for measuring the emotional stress produced variations in a speech sound comprising: means for converting speech sounds into electrical signals; means connected to said converting means for emphasizing an emotional stress produced variation segment of said electrical signals, by time and amplitude discrimination, by integration followed by differentiation and baseline restoration; means connected to said emphasizing means for detecting said emotional stress produced variation segment; and means connected to said detecting means for indicating the degree of emotional stress produced variations detected.
Claim 6
Independent Claim
84 words
A device for measuring the emotional stress produced variations in a speech sound comprising: means for converting speech sounds into electrical signals; means connected to said converting means for emphasizing an emotional stress produced variation segment of said electrical signals, by time and amplitude discrimination, by integration followed by differentiation and baseline restoration; means connected to said emphasizing means for detecting said emotional stress produced variation segment; and means connected to said detecting means for indicating the degree of emotional stress produced variations detected.
Claim 7
Dependent Claim
21 words
A device as in claim 4 wherein said emphasizing means includes an integrating means and a differentiating means connected in series.
Claim 8
Dependent Claim
22 words
A device as in claim 5 wherein said emphasizing means includes a rectifying means connected to the input of said integrating means.
Claim 9
Dependent Claim
34 words
A device as in claim 6 including amplifiers connected between said converting means and said rectifying means, between said rectifying means and said integrating means, and between said integrating means and said differentiating means.
Claim 10
Dependent Claim
43 words
A device as in claim 5 wherein said differentiating means produces a series of varying amplitude pulses and said detecting means includes a voltage comprising means for producing a series of uniform amplitude pulses for each varying amplitude pulse above a predetermined level.
Claim 11
Dependent Claim
36 words
A device as in claim 8 wherein said indicating means includes a counting means for counting the uniform amplitude pulses, whereby the number of uniform amplitude pulses indicates the degree of emotional stress produced variations present.
Claim 12
Independent Claim
103 words
A device for determining emotional stress by speech wave analysis comprising: means for producing an electrical signal representative of said speech wave; means connected to said producing means for amplifying and shaping said electrical signal to form an electrical signal envelope; means connected to said amplifying and shaping means for emphasizing rapid aperiodic amplitude modulation on said electrical signal envelope; means connected to said emphasizing means for detecting amplitudes of said emphasized rapid aperiodic amplitude modulation above a predetermined level; and means connected to said detecting means for indicating the number of detected modulations whereby emotional stress is determined by the value indicated.
Claim 13
Independent Claim
103 words
A device for determining emotional stress by speech wave analysis comprising: means for producing an electrical signal representative of said speech wave; means connected to said producing means for amplifying and shaping said electrical signal to form an electrical signal envelope; means connected to said amplifying and shaping means for emphasizing rapid aperiodic amplitude modulation on said electrical signal envelope; means connected to said emphasizing means for detecting amplitudes of said emphasized rapid aperiodic amplitude modulation above a predetermined level; and means connected to said detecting means for indicating the number of detected modulations whereby emotional stress is determined by the value indicated.
Claim 14
Dependent Claim
26 words
A device as in claim 10 wherein said emphasizing means comprises a differentiator means and a baseline restoration means for producing a varying amplitude pulse train.
Claim 15
Dependent Claim
30 words
A device as in claim 11 wherein said detecting means comprises a voltage comparator means for producing a uniform amplitude pulse for each varying amplitude pulse above said predetermined level.
Claim 16
Dependent Claim
21 words
A device as in claim 12 wherein said shaping means includes a rectifying means and an integrating means connected in series.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |