Intelligent digital filter design and applications

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A digital filter performs digital filtering to process (preserve, attenuate, or modify) different spectral components of a signal. Digital filters have been serving various aspects of our daily life. Personal and home applications where digital filters are involved include mobile phone, hearing aid, headphone, loudspeaker, photography, songs and music, radio, movies, CD, DVD, HDTV, etc. Indeed, the fields of digital filter applications are broad which include communications; cable, radio, and satellite broadcasting systems; antenna, radar, and sonar systems; consumer and industrial electronics; control systems; electric power and machines; biomedical instrumentation; seismic system; remote sensing system; aerospace and transportation systems; enhanced vehicle applications etc. In general, a digital filter can be designed and implemented to meet the high accuracy requirement of a demanding application. However, the nature of nearly all applications of digital filters is to process a signal without making use of the dynamic information of the signal to achieve what can be called intelligent digital filtering. An intelligent digital filter that combines the computing power of a digital filter and the brain-like abilities to process information intelligently is expected to offer unprecedented performances in applications. Imagine an intelligent digital filter in any of your devices such as mobile phone, hearing aid, car radio, and HDTV DVD combo that can continuously monitor different noise environments and self-adjust its filter coefficients to produce a clear sound at a comfortable level. By representing a signal, image, video, genome or any type of information as a numerical waveform, an intelligent digital filter can manifest itself to process a variety of information, and has a scope that has no boundary. This research program on intelligent digital filters will advance their designs and applications and will offer a powerful and unprecedented filter for signal processing. The technology developed will inspire new ideas, methods, and applications; and will enable better living in a forthcoming intelligent digital filter age benefiting individuals, families, organizations, Canada, and the world.