3582461261

JS

Datę: 23-09-2013

M.E. Electronics & Conummication Kngineering (VLSI &Embedded Systems Design) Semester: III

Subject Name: Digital Signal Processing Subject Codę: 735206

Lab-Assignment:

Problem 1

•    Design and Implement a Digital Butterworth Low Pass System with thc following specifications:

o Passband Frecjuency: l(HK)Hz o Passband Attenuation: ldb o Stopband Frequency: 12000Hz o Stopband Attenuation: KOdb o Sampling Ratę: 16000Hz

•    Ohtain and Plot the impulse response of the given digital low pass filier.

•    Ohtain and Plot the Magnitude and Phase responses of the given digital low pass filter.

•    Yerify the cut-off frequency of the filter froni its Magnitude Response.

•    Implement the Difference Equation by passing the samples of a sinusoidal signal of amplitudę 0.9. frcqucncy 1000Hz and numbcr of cyclcs equal to 1000.

•    Yerify the output signal amplitudę with the theoretical and cxpected amplitudę.

MATLAB Codę:-

dc. dearall, dose all;

fs=16000;

ts=l/fs,

fp=1000.

fstop-12000,

rp=l.

rs=30.

ap=10^/X-ip/20),

as=10^A(-rs/20).

ap_lin=(l/(ap*ap))-l,

as_linKl/(as*as))-l.

\Vp=2*pi*fp.

\Vs=2*pi*fstop,

Jay Kothari Page 1 of 67