Data processing: speech signal processing – linguistics – language – Speech signal processing – Application
Reexamination Certificate
1999-08-31
2002-07-30
Chawan, Vijay B (Department: 2654)
Data processing: speech signal processing, linguistics, language
Speech signal processing
Application
C704S270000, C704S272000, C704S275000, C704S209000
Reexamination Certificate
active
06427137
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to detecting emotion in a voice and more particularly to preventing fraud through detecting a level of nervousness in a person's voice.
BACKGROUND OF THE INVENTION
Although the first monograph on expression of emotions in animals & humans was written by Charles Darwin in the last century and psychologists have gradually cumulated knowledge in the field of emotion detection and voice recognition, it has attracted a new wave of interest recently by both psychologists and artificial intelligence specialists. There are several reasons for this renewed interest: technological progress in recording, storing and processing audio and visual information; the development of non-intrusive sensors; the advent of wearable computers; and the urge to enrich human-computer interface from point-and-click to sense-and-feel. Further, a new field of research in AI known as affective computing has recently been identified.
As to research on recognizing emotions in speech, on one hand, psychologists have done many experiments and suggested theories. On the other hand, AI researchers made contributions in the following areas: emotional speech synthesis, recognition of emotions and using agents for decoding and expressing emotions. In spite of the research on recognizing emotions in speech, the art has been devoid of methods and apparatuses that utilize emotion recognition and voice recognition for business purposes.
SUMMARY OF THE INVENTION
A system, method and article of manufacture are provided for detecting nervousness in a voice in a business environment to help prevent fraud. First, voice signals are received from a person during a business event. The voice signals are analyzed during the business event to determine a level of nervousness of the person, an indication of which is then output before the business event is completed.
Preferably, a degree of certainty as to the level of nervousness of the person is output to assist one searching for fraud in making a determination as to whether the person was speaking fraudulently. Optionally, the level of nervousness of the person may be output in real time. As another option, an alarm may be set off when the level of nervousness goes above a predetermined level. This could be used to alert an overseer or to begin recording the conversation, if it is not already being recorded.
In one embodiment of the present invention, at least one feature of the voice signals is extracted and used to determine the level of nervousness of the person. Features that may be extracted include a maxiumum value of a fundamental frequency, a standard deviation of the fundamental frequency, a range of the fundamental frequency, a mean of the fundamental frequency, a mean of a bandwidth of a first formant, a mean of a bandwidth of a second formant, a standard deviation of energy, a speaking rate, a slope of the fundamental frequency, a maximum value of the first formant, a maximum value of the energy, a range of the energy, a range of the second formant, and a range of the first formant.
REFERENCES:
patent: 3855416 (1974-12-01), Fuller
patent: 3971034 (1976-07-01), Bell, Jr. et al.
patent: 4093821 (1978-06-01), Williamson
patent: 4142067 (1979-02-01), Williamson
patent: 4490840 (1984-12-01), Jones
patent: 4592086 (1986-05-01), Watari et al.
patent: 4602129 (1986-07-01), Matthews et al.
patent: 4696038 (1987-09-01), Doddington et al.
patent: 4996704 (1991-02-01), Brunson
patent: 5148483 (1992-09-01), Silverman
patent: 5163083 (1992-11-01), Dowden et al.
patent: 5410739 (1995-04-01), Hart
patent: 5495553 (1996-02-01), Jakatdar
patent: 5539861 (1996-07-01), DeSimone
patent: 5647834 (1997-07-01), Ron
patent: 5666400 (1997-09-01), McAllister et al.
patent: 5774859 (1998-06-01), Houser et al.
patent: 5812977 (1998-09-01), Douglas
patent: 5884247 (1999-03-01), Christy
patent: 5893057 (1999-04-01), Fujimoto et al.
patent: 5903870 (1999-05-01), Kaufman
patent: 5909665 (1999-06-01), Kato
patent: 5913196 (1999-06-01), Talmor et al.
patent: 5918222 (1999-06-01), Fukui et al.
patent: 5936515 (1999-08-01), Right et al.
patent: 5976081 (1999-11-01), Silverman
patent: 6006188 (1999-12-01), Bogdashevsky et al.
patent: 6151571 (2000-11-01), Pertrushin
patent: PCT/US98/22836 (1999-05-01), None
patent: PCT/IL98/00613 (1999-06-01), None
Furui et al, “Investigating a Mixed Initiative Dialogue Management Strategy”, Dec. 14, 1997, IEEE Workshop on Automatic Speech Recognition and Understanding.*
Yamada et al., (“Pattern Recognition of emotion with neural network”, Proceedings of the 1995 IEEE IECON 21st International Conference on Industrial Electronics, Control, and Instrumentation, vol. 1, pp. 183-187, Nov. 1995).
Accenture LLP
Brinks Hofer Gilson & Lione
Chawan Vijay B
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