Company Filing History:
6 out of 3,750 
4 out of 16,453 
Years Active: 2013-2023
Title: Haishan Zhong: Innovator in Bandwidth Extension Technology
Introduction
Haishan Zhong is a prominent inventor based in Singapore, known for his significant contributions to audio technology. With a total of 10 patents to his name, he has made remarkable advancements in bandwidth extension methods that enhance audio quality while reducing computational demands.
Latest Patents
Zhong's latest patents include a bandwidth extension method, bandwidth extension apparatus, program, integrated circuit, and audio decoding apparatus. These innovations aim to provide a bandwidth extension method that reduces the computation amount required in bandwidth extension and suppresses the deterioration of quality in the bandwidth being extended. The method involves transforming a low-frequency bandwidth signal into a QMF domain to generate a first low-frequency QMF spectrum. Pitch-shifted signals are created by applying different shifting factors to the low-frequency bandwidth signal. A high-frequency QMF spectrum is then generated by time-stretching the pitch-shifted signals in the QMF domain. The high-frequency QMF spectrum is modified and combined with the first low-frequency QMF spectrum to achieve the desired audio quality.
Career Highlights
Throughout his career, Haishan Zhong has worked with notable companies such as Panasonic Intellectual Property Corporation of America and Panasonic Corporation. His experience in these organizations has allowed him to refine his skills and contribute to innovative projects in the field of audio technology.
Collaborations
Zhong has collaborated with talented individuals such as Kok Seng Chong and Tomokazu Ishikawa, further enhancing his work and expanding the impact of his inventions.
Conclusion
Haishan Zhong's contributions to bandwidth extension technology have significantly advanced the field of audio processing. His innovative methods and collaborative efforts continue to influence the industry, showcasing his dedication to improving audio quality through technological advancements.
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