Company Filing History:
2 out of 377 
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2 out of 832,843 Years Active: 2000-2008
Title: Douglas E Kolb: Innovator in Speech Coding Technology
Introduction
Douglas E Kolb is a notable inventor based in Bedford, MA (US), recognized for his contributions to the field of speech coding technology. With a total of 5 patents to his name, Kolb has made significant advancements that enhance the efficiency and effectiveness of speech coders.
Latest Patents
Among his latest patents, Kolb has developed the "LPAS speech coder using vector quantized, multi-codebook, multi-tap pitch predictor." This invention presents a method and apparatus aimed at reducing the complexity of linear prediction analysis-by-synthesis (LPAS) speech coders. The speech coder features a multi-tap pitch predictor that utilizes an adaptive codebook, which is subdivided into at least a first vector codebook and a second vector codebook. This innovative pitch predictor effectively removes redundancies in a subject speech signal and vector quantizes the pitch predictor parameters.
Another significant patent is the "LPAS speech coder using vector quantized, multi-codebook, multi-tap pitch predictor and optimized ternary source excitation codebook derivation." This invention also focuses on reducing the complexity of LPAS speech coders. It includes a multi-tap pitch predictor and an adaptive codebook, similar to his previous work. Additionally, it incorporates a source excitation codebook that indicates pulses in the subject speech signal by deriving corresponding vector values. The serial optimization of both the adaptive codebook and the fixed codebook results in a low complexity LPAS speech coder.
Career Highlights
Throughout his career, Kolb has worked with various companies, including Tellabs Operations, Inc. His experience in the industry has allowed him to refine his skills and contribute to the development of advanced speech coding technologies.
Collaborations
Kolb has collaborated with professionals in his field, including Jayesh S Patel, to further enhance his innovations and drive advancements in speech coding.
Conclusion
Douglas E Kolb's work in speech coding technology has significantly impacted the field, showcasing his innovative spirit and dedication to improving communication technologies. His patents reflect a commitment to reducing complexity and enhancing performance in speech coders, making him a valuable contributor to the industry.