Location History:
- Cupertino, CA (US) (2006)
- Sunnyvale, CA (US) (2007)
Company Filing History:
Years Active: 2006-2007
Title: Innovations of Douglas A. Chrissan
Introduction
Douglas A. Chrissan is a notable inventor based in Sunnyvale, CA. He has made significant contributions to the field of audio processing and speech signal processing. With a total of 2 patents, his work has advanced the technology used in voice communication systems.
Latest Patents
One of his latest patents is the "Varying Pulse Amplitude Multi-Pulse Analysis Speech Processor and Method." This invention modifies the amplitudes of pulses within a multi-pulse sequence to enhance the perceived quality of reconstructed speech. The processing arrangement generates short-term characteristics of an input speech signal and a target vector, allowing for optimal analysis to determine the best pulse sequence to match the target.
Another significant patent is the "Voice-over Internet Protocol Processor." This invention focuses on audio processing for IP telephony applications. It features a programmable audio processor chip designed to process voice data for IP communications. The chip includes a DSP voice compression device and audio processing circuitry, enabling efficient handling of voice data over IP networks.
Career Highlights
Douglas A. Chrissan is currently employed at 8x8, Inc., where he continues to innovate in the field of audio processing. His work has been instrumental in developing low-power implementations suitable for voice-over-IP terminals.
Collaborations
He has collaborated with notable coworkers such as Bryan R. Martin and Ian John Buckley, contributing to advancements in their respective fields.
Conclusion
Douglas A. Chrissan's contributions to audio processing and speech signal processing have made a significant impact on communication technologies. His innovative patents reflect his dedication to improving voice communication systems.