Location History:
- Wyoming, MI (US) (1984 - 1988)
- Kentwood, MI (US) (1993)
Company Filing History:
Years Active: 1984-1993
Title: Innovations by Thomas E. Perfitt
Introduction
Thomas E. Perfitt is an accomplished inventor based in Wyoming, MI (US). He holds a total of 3 patents that showcase his expertise in optical sensors and adaptive speech recognition technologies. His work has significantly contributed to advancements in inertial reference systems and noise compensation methods.
Latest Patents
One of his latest patents is a processing arrangement for an optical rate sensor. This optical rate sensor is designed for use in inertial reference systems to measure rates of angular rotation with high resolution and sensitivity. The sensor features a passive ring Sagnac interferometer with a multiturn fiber optic ring, allowing for the transmission of counter-propagating optical waves. A non-reciprocal phase modulation is applied to these waves, which are then combined to produce a 'zero order' fringe pattern. This pattern's intensity varies according to the relative phase between the counter-propagating waves. The phase modulation is controlled by modulated control signals that relate to the measured values of the angular rotation rate. The optical rate sensor also includes an analog integrator and a central processing unit, which optimizes control and filtering for accurate rate determination.
Another significant patent involves a noise compensation arrangement that enhances adaptive speech recognition. This innovation extracts an estimate of background noise during unknown speech input and modifies the noiseless prestored reference speech signals for comparison. By using averaged values of autocorrelation coefficients and Toeplitz matrix elements, the system calculates the LPC predictor signals, improving the overall accuracy of speech recognition.
Career Highlights
Thomas E. Perfitt has made notable contributions to the field of technology through his work at Lear Siegler, Inc. His innovative approaches have led to the development of advanced systems that improve both measurement accuracy and speech recognition capabilities.
Collaborations
Throughout his career, Thomas has collaborated with talented individuals such as John N. Damoulakis and Michael E. Illikainen. These partnerships have fostered a creative environment that has led to significant technological advancements.
Conclusion
Thomas E. Perfitt is a distinguished inventor whose work in optical sensors and speech recognition has made a lasting impact on technology. His innovative patents reflect his commitment to advancing these fields and improving system performance.