Khosrow Lashkari

Title: Khosrow Lashkari: Innovator in Audio Technology

Introduction

Khosrow Lashkari is a prominent inventor based in Palo Alto, CA, known for his contributions to audio technology. With a total of 7 patents, he has made significant advancements in the field of hearing augmentation and noise reduction systems. His innovative work has garnered attention and respect within the industry.

Latest Patents

One of Khosrow Lashkari's latest patents is titled "Ambient-aware background noise reduction for hearing augmentation." This patent describes an ambient-aware audio system that effectively reduces stationary noise while maintaining dynamic environmental sounds in the received input audio signal. The system incorporates a signal-to-noise ratio (SNR) estimator that calculates both a priori and a posteriori SNRs. It also features a gain function that utilizes these estimated SNRs to compute coefficients for a frequency domain noise reduction filter. This filter processes the input audio signal to generate a clearer output audio signal. The SNRs are estimated using both the input and output audio signals across multiple frames, ensuring optimal performance.

Another notable patent is "Pole-zero blocking matrix for low-delay far-field beamforming." This system performs pole-zero or IIR modeling and estimation of the inter-microphone transfer function between two microphones. It includes an adaptive FIR filter for the first microphone signal and a delay element for the second microphone signal. The filters are jointly adapted to minimize an error signal, which can serve as a noise reference in noise cancellation applications. This innovation allows for effective far-field beamforming with minimal delay, enhancing audio clarity in various environments.

Career Highlights

Khosrow Lashkari is currently employed at Cirrus Logic Inc., where he continues to develop cutting-edge audio technologies. His work has significantly impacted the way audio systems function, particularly in enhancing user experience in hearing devices.

Collaborations

Khosrow has collaborated with talented individuals such as Justin Lamar Allen and Jie Su, contributing to the advancement of audio technology through teamwork and shared expertise.

Conclusion

Khosrow Lashkari's innovative contributions to audio technology, particularly in noise reduction and hearing augmentation, highlight his role as a leading inventor in the field. His patents reflect a commitment to improving audio experiences for users, showcasing the importance of innovation in technology.