tailieunhanh - Bài giảng Xử lý tín hiệu số: Sampling and Reconstruction - Ngô Quốc Cường (ĐH Sư phạm Kỹ thuật)

Bài giảng "Xử lý tín hiệu số: Sampling and Reconstruction" cung cấp cho người học các kiến thức: Introduction, review of analog signal, sampling theorem, analog reconstruction. nội dung chi tiết. | f TRƯ rNG ĐẠIHOC sư PHẠM KỸ THUẬT TP. Hồ CHÍ MINH HCMC University of Technology and Education HCMUTE Xử lý tín hiệu số Sampling and Reconstruction Ngô Quốc Cường ngoquoccuong175@ a ngoquoccuong Sampling and reconstruction HCMUTE Introduction Review of analog signal Sampling theorem Analog reconstruction HCMUTE Introduction Digital processing of analog signals proceeds in three stages 1. The analog signal is digitized that is it is sampled and each sample quantized to a finite number of bits. This process is called A D conversion. 2. The digitized samples are processed by a digital signal processor. 3. The resulting output samples may be converted back into analog form by an analog reconstructor D A conversion . analog input sampler and quantizer 100111011 0110 . . . digital input digital signal processor 110010100 1101 . . digital output analog re constructor analog .