Lecture 16: Sampling of Continuous-Time Signals Instructor: Dr. Ghazi Al Sukkar Dept. of Electrical Engineering The University of Jordan

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Presentation transcript:

Lecture 16: Sampling of Continuous-Time Signals Instructor: Dr. Ghazi Al Sukkar Dept. of Electrical Engineering The University of Jordan Spring 20141

Outline  Continuous-time processing of Discrete-time signals:  Sampling rate reduction by an integer factor (downsampling)  Increasing the sampling rate by an integer factor (upsampling)  Changing the sampling rate by Non-integer factor Spring 20142

Continuous-time processing of Discrete-time signals: Spring C/D D/C continuous-time system

Cont.. Spring

Application: Non-integer delay Spring

Cont.. Spring x[n] n n

Sampling rate reduction by an integer factor (downsampling) Spring compressor Down sampling

Cont.. Spring

Cont.. Spring

Cont.. Spring Decimator

Cont.. Spring No aliasing aliasing

Increasing the sampling rate by an integer factor (upsampling) Spring Expander interpolator Up Sampling

Cont.. Spring

Spring

Cont.. Spring

Changing the sampling rate by Non-integer factor: Spring Expander Decimator interpolator Expander Compressor

Cont.. Spring

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