520.435 digital signal processing · courtesy, dsp for matlab and labview, vol. 1, page 3, edited...
TRANSCRIPT
Hassan Mohy-ud-Din
Course Pagehttp://cyphynets.lums.edu.pk/index.php/ECE_520.435_-_DSP_for_MATLAB%2C_Fall_2010
My Webpagehttp://cyphynets.lums.edu.pk/index.php/Hassan_Mohy-ud-Din
520.435 Digital Signal Processing
>> ‘Today’s Agenda’ ‘Overview of DSP System’ ‘Time , Frequency Picture’ ‘Discrete Signals and Concepts ‘Discrete Sequences’ ‘Delta, Unit Step, Ramp, Sine, Cosine’ ‘Exponential, Periodic, Harmonic Sequences’ ‘Folded Sequences’ ‘Even-Odd Decompositions’
Digital Signal Processing System Block Diagram
Courtesy, DSP for MATLAB and LabView, Vol. 1, Page 3, edited by José Moura
Time-Frequency Representations and Analysis: The Uncertainty Principle
Discrete Time Signals and Concepts
Unit Impulse (Dirac Delta) Function
(Kronecker Delta Function in Discrete Domain)
Unit Step Function(Heaviside Function)
Unit Ramp Function
Sine, Cosine and Exponential Sequences
‘f=Frequency’, ‘T=Sampling Time’, ‘n=Sample Index’, ‘k=# of Cycles’, ‘N=Sequence Length’
Real Exponential Sequences
Periodic Sequences
Harmonic Sequences
Courtesy, DSP for MATLAB and LabView, Vol. 1, Page 18, edited by José Moura
Square Wave composed of
Sinusoidal Harmonics
Folded Sequence
О О О Nothing but Time Reversal
Even-Odd Decompositions
QUESTIONS