The digital allpass filter is a computationally efficient signal processing building block which is quite useful in many signal processing applications. In this talk we review the properties of digital allpass filters, and provide a broad overview of the diversity of applications in digital filtering such as notch filtering, low sensitivity digital filter implementation, tunable filter design, complementary filtering and filter banks, multirate filtering, digital audio, and image zooming.
Sanjit K. Mitra is a Research Professor in the Department of Electrical & Computer Engineering, University of California, Santa Barbara and Professor Emeritus, Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles. He has held visiting appointments in Australia, Austria, Brazil, Croatia, Finland, Germany, India, Japan, Norway, Singapore, Turkey, and the United Kingdom. Dr. Mitra has published over 700 papers in the areas of analog and digital signal processing, and image processing. He has also authored and co-authored twelve books, and holds five patents. He has presented 29 keynote and/or plenary lectures at conferences held in the United States and 16 countries abroad. Dr. Mitra has served IEEE in various capacities including service as the President of the IEEE Circuits & Systems Society in 1986.