Guohua Sun

Title: The Innovative Contributions of Guohua Sun in Active Noise Control Systems

Introduction

Guohua Sun is an accomplished inventor based in Cincinnati, Ohio, recognized for his significant contributions to the field of active noise control (ANC) systems. With a total of two patents to his name, Sun has developed advanced technologies aimed at enhancing user experience by reducing unwanted road noise in vehicles.

Latest Patents

Sun's latest innovations include the following patents:

1. **Subband Algorithm with Threshold for Robust Broadband Active Noise Control System** - This patent features an ANC system that utilizes a speaker alongside one or more processors. The processors implement an adaptive subband filtered reference control algorithm that applies thresholds to reference and error feedback signal paths. This approach allows the system to respond effectively to broadband non-Gaussian impulsive reference signals associated with road noise, leading to the partial cancellation of noise within the audible frequency range of 20 Hz to 20 kHz.

2. **Variable Bandwidth Delayless Subband Algorithm for Broadband Active Noise Control System** - In this patent, Sun has designed an ANC system that operates through a delayless subband filtered-x least mean square control algorithm. The system employs a variable bandwidth discrete Fourier transform filter bank, which maintains a uniform gain spectrum across defined subband frequencies. This innovation enables the ANC system to partially cancel road noise in response to broadband white noise reference signals.

Career Highlights

Guohua Sun has held positions at notable organizations, including Ford Global Technologies, LLC, and the University of Cincinnati. His work at these institutions has allowed him to explore and advance the applications of active noise control technologies within automotive and research environments.

Collaborations

Throughout his career, Sun has collaborated with esteemed professionals such as Ming-Ran Lee and Takeshi Abe. These partnerships have contributed to the successful development of innovative noise control solutions and have fostered an environment of creativity and collaboration in the field of engineering.

Conclusion

Guohua Sun's contributions to active noise control systems underscore his importance as an inventor in this specialized field. With two noteworthy patents, his work continues to influence the design and functionality of innovative noise reduction technologies, enhancing the comfort and quality of experiences for vehicle users.