Shirin Jalali

Title: Innovations in Acoustic Echo Cancellation by Shirin Jalali

Introduction

Shirin Jalali, an innovative inventor based in Berkeley Heights, NJ, has made significant contributions to the field of acoustic echo cancellation. With two patents to her name, she continues to push the boundaries of technology, particularly in enhancing the quality of audio communication.

Latest Patents

Shirin's recent patents focus on advanced methods and apparatus for performing acoustic echo cancellation. One of her notable inventions describes an AEC system that implements various updating techniques for echo cancellation. This includes a Block Maximum Likelihood updating technique that updates filter coefficients typically at integer multiples of a block size. Additionally, her work features a Proportional-Incremental Maximum Likelihood updating technique that applies proportional weighting to filter coefficient updates. Furthermore, she has developed a Multi-source Incremental Maximum Likelihood updating technique utilizing separate control parameters associated with multiple loudspeakers. These techniques can be combined and implemented in real-time for enhanced performance.

In her second patent, Shirin addresses echo cancellation for two-way audio communication, focusing on the interaction between microphones and loudspeakers. The AEC system receives audio signals influenced by both near-end and reproduced far-end signals. It updates the estimates of coefficients of the acoustic channel between loudspeakers and microphones while utilizing control parameters that are configurable. The dynamic adjustment of these parameters enhances the accuracy of the echo cancellation process.

Career Highlights

Shirin Jalali is currently employed at Nokia Technologies Oy, where she applies her expertise in developing cutting-edge audio technologies. Her inventive work has garnered attention within the industry, highlighting her as a leading figure in the realm of audio signal processing.

Collaborations

As part of her tenure at Nokia, Shirin collaborates with colleagues such as Carl Jeremy Nuzman. Together, they work on pioneering advancements that significantly improve audio communication systems.

Conclusion

Shirin Jalali's contributions to acoustic echo cancellation demonstrate her innovative spirit and technical expertise. Her patented technologies not only enhance audio quality but also set the stage for future developments in this essential field. As she continues her work at Nokia Technologies Oy, the impact of her inventions will likely be felt across various industries that rely on high-quality audio technology.