Alexandre Guerin

Title: Innovations of Alexandre Guerin

Introduction

Alexandre Guerin is a notable inventor based in Rennes, France. He has made significant contributions to the field of acoustic signal processing, holding a total of nine patents. His work focuses on methods and devices that enhance sound quality and localization in various environments.

Latest Patents

Among his latest patents is a method and device for variable pitch echo cancellation. This invention processes a signal from a microphone to limit echo effects caused by sound emitted from a loudspeaker. The method involves determining a useful signal by subtracting an estimated echo signal from the captured sound. The adaptive filter used in this process adjusts to changes in the acoustic path over time, ensuring optimal performance. Another significant patent is related to the localization of sound sources in a given acoustic environment. This method processes signals from multiple microphones to detect sound sources accurately. It includes creating an acoustic activity map and searching for local peaks that indicate the presence of sound sources.

Career Highlights

Alexandre Guerin has worked with prominent companies such as Orange and France Telecom. His experience in these organizations has allowed him to develop and refine his innovative ideas in acoustic technology.

Collaborations

He has collaborated with notable coworkers, including Julien Faure and Claude Marro, contributing to various projects in the field of sound processing.

Conclusion

Alexandre Guerin's innovative work in acoustic signal processing has led to significant advancements in echo cancellation and sound source localization. His contributions continue to impact the industry positively.