数字信号处理领域先驱Bede Liu于5月7日去世，享年91岁[1]。Liu在普林斯顿大学任教超过50年，其研究推动了模拟向数字信号处理的转变，为现代通信、多媒体系统和消费电子奠定了数学与工程基础[1]。
Liu的学术成就斐然。他发表了250篇技术论文，获得12项美国专利，并指导了53名博士生，其中包括互联网架构创造者Robert Kahn等杰出人才[1]。1976年，Liu与Abe Peled合著了教科书《Digital Signal Processing: Theory, Design, and Implementation》[1]。2018年，他获得了IEEE Jack S. Kilby信号处理奖[1]。此外，Liu在2002年出版了《Multimedia Data Hiding》，与学生Min Wu从事数字水印技术研究[1]。
在学术管理方面，Liu于1962年加入普林斯顿大学[1]，并在1994年至1997年期间担任该校电气与计算机工程系主任[1]。他还曾于1984年至1985年任职IEEE董事会，并于1982年担任IEEE电路与系统学会主席[1]。1959年，Liu获得了Bell Labs奖学金[1]。
Bede Liu, a foundational figure in digital signal processing, passed away on May 7, 2024, at the age of 91 [1]. His decades-long career at Princeton University transformed the mathematical and engineering foundations underlying modern communications, multimedia systems, and consumer electronics through pioneering work on the transition from analog to digital signal processing [1].
Liu spent more than 50 years at Princeton University, where he joined in 1962 following a Bell Labs fellowship awarded in 1959 [1]. During his tenure, he served as director of the Department of Electrical and Computer Engineering from 1994 to 1997 [1]. His research and mentorship shaped the field profoundly; he supervised 53 doctoral students, among them Robert Kahn, a creator of Internet architecture [1]. Liu authored over 250 technical papers and held 12 U.S. patents [1]. In 1976, he co-authored with Abe Peled the influential textbook "Digital Signal Processing: Theory, Design, and Implementation" [1]. Later, he contributed to digital watermarking research, publishing "Multimedia Data Hiding" in 2002 in collaboration with student Min Wu [1].
Recognition for his contributions came through multiple channels [1]. He received the IEEE Jack S. Kilby Award for Signal Processing in 2018 [1]. Earlier in his career, he served as chair of the IEEE Circuits and Systems Society in 1982 and later as a member of the IEEE Board of Directors from 1984 to 1985 [1].