Xiaoqin Sun

Title: Innovations of Xiaoqin Sun

Introduction

Xiaoqin Sun is an accomplished inventor based in Plainsboro, NJ (US). He holds 2 patents that showcase his expertise in audio and speech signal processing. His work has significantly contributed to advancements in the field, particularly in enhancing the quality of speech in noisy environments.

Latest Patents

One of Xiaoqin Sun's latest patents is a method and system for sub-band hybrid coding. This invention provides a system and method for processing audio and speech signals using a pitch and voicing dependent spectral estimation algorithm. The algorithm accurately represents voiced speech, unvoiced speech, and mixed speech in the presence of background noise. The invention modifies the synthesis model based on an estimate of the current input signal to improve the perceptual quality of speech and background noise under various input conditions. Additionally, it enhances the robustness of the voicing dependent spectral estimation algorithm by incorporating a Multi-Layer Neural Network in the estimation process. This innovation is essential for delivering high-quality intelligible speech amidst background noise.

Another significant patent involves speech coding and decoding using a phase spectrum corresponding to a transfer function with at least one pole outside the unit circle. This decoder for speech signals receives magnitude spectral information for synthesizing a time-varying signal. It computes phase spectrum information corresponding to a minimum phase filter, generating a time-varying signal from both magnitude and phase spectral information. The phase spectrum of the signal is then modified through phase adjustment, further enhancing the quality of the output.

Career Highlights

Throughout his career, Xiaoqin Sun has worked with notable companies, including British Telecommunications Public Limited Company. His contributions to the field of audio processing have been recognized and valued in various professional settings.

Collaborations

Xiaoqin has collaborated with esteemed colleagues, including Joseph Gerard Aguilar and Juin-Hwey Chen. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.

Conclusion

Xiaoqin Sun's innovative contributions to audio and speech signal processing have made a significant impact in the field. His patents reflect a commitment to enhancing communication technology, particularly in challenging environments.