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Bài giảng "Xử lý tín hiệu số - Chapter 0: Introduction" has contents: Signal and systems, classification of signal, basic elements of a DSP system, DSP applications - communications,. and other contents. | Chapter 0 Introduction Ha Hoang Kha Ph.D. Ho Chi Minh City University of Technology Email hhkha@hcmut.edu.vn CuuDuongThanCong.com https fb.com tailieudientucntt 1. Signal and Systems A signal is defined as any physical quantity that varies with time space or any other independent variables. Speech image video and electrocardiogram signals are information-bearing signals. Mathematically we describe a signal as a function of one or more independent va -Hí Examples x t 110 sin 2 50t I x y 3 x 2 xy 10 y2 A system is defined as a physical device that performs any operation on a signal. A filter is used to reduce noise and interference corrupting a desired information-bearing signal. Ha H. Kha 2 Introduction CuuDuongThanCong.com https fb.com tailieudientucntt 1. Signal and Systems Signal processing is to pass a signal through a system. A digital system can be implemented as or digital hardware logic circuits . Ha H. Kha Introduction CuuDuongThanCong.com https fb.com .
