From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 1592/CH6/EX6.1/Example_6_1.sce | 33 +++++++++++++++++++++++++++++++ 1592/CH6/EX6.1/Fig6_1_1.jpg | Bin 0 -> 5283 bytes 1592/CH6/EX6.1/Fig6_1_2.jpg | Bin 0 -> 7668 bytes 1592/CH6/EX6.2/Example_6_2.sce | 44 +++++++++++++++++++++++++++++++++++++++++ 1592/CH6/EX6.2/Fig6_2_1.jpg | Bin 0 -> 5283 bytes 1592/CH6/EX6.2/Fig6_2_2.jpg | Bin 0 -> 7726 bytes 1592/CH6/EX6.3/Example_6_3.sce | 11 +++++++++++ 1592/CH6/EX6.4/Example_6_4.sce | 9 +++++++++ 1592/CH6/EX6.5/Example_6_5.sce | 34 +++++++++++++++++++++++++++++++ 1592/CH6/EX6.5/Fig6_5_1.jpg | Bin 0 -> 6936 bytes 1592/CH6/EX6.5/Fig6_5_2.jpg | Bin 0 -> 8344 bytes 1592/CH6/EX6.6/Example_6_6.sce | 11 +++++++++++ 1592/CH6/EX6.8/Example_6_8.sce | 8 ++++++++ 13 files changed, 150 insertions(+) create mode 100755 1592/CH6/EX6.1/Example_6_1.sce create mode 100755 1592/CH6/EX6.1/Fig6_1_1.jpg create mode 100755 1592/CH6/EX6.1/Fig6_1_2.jpg create mode 100755 1592/CH6/EX6.2/Example_6_2.sce create mode 100755 1592/CH6/EX6.2/Fig6_2_1.jpg create mode 100755 1592/CH6/EX6.2/Fig6_2_2.jpg create mode 100755 1592/CH6/EX6.3/Example_6_3.sce create mode 100755 1592/CH6/EX6.4/Example_6_4.sce create mode 100755 1592/CH6/EX6.5/Example_6_5.sce create mode 100755 1592/CH6/EX6.5/Fig6_5_1.jpg create mode 100755 1592/CH6/EX6.5/Fig6_5_2.jpg create mode 100755 1592/CH6/EX6.6/Example_6_6.sce create mode 100755 1592/CH6/EX6.8/Example_6_8.sce (limited to '1592/CH6') diff --git a/1592/CH6/EX6.1/Example_6_1.sce b/1592/CH6/EX6.1/Example_6_1.sce new file mode 100755 index 000000000..6dfef7a58 --- /dev/null +++ b/1592/CH6/EX6.1/Example_6_1.sce @@ -0,0 +1,33 @@ +//Scilab Code for Example 6.1 of Signals and systems by +//P.Ramakrishna Rao +//Sampling of signal +clc; +clear f n X X_delta w; +fs=200; +for f=-200:200 + X(f+201)=5*[delta(f-75)+delta(f+75)]; +end +figure(1); +f=-200:200; +plot2d3(f,X,-2); +title('X(f)'); +xlabel('---> f'); +w=1; +n=-1; + for f=-275:275 + X_delta1(f+276)=fs*5*[delta(f-n*fs-75)+delta(f-n*fs+75)]; + end +n=n+1; + for f=-275:275 + X_delta2(f+276)=fs*5*[delta(f-n*fs-75)+delta(f-n*fs+75)]; +end +n=n+1; + for f=-275:275 + X_delta3(f+276)=fs*5*[delta(f-n*fs-75)+delta(f-n*fs+75)]; +end +X_delta=X_delta1+X_delta2+X_delta3; +figure(2); +f=-275:275; +plot2d3(f,X_delta,-2); +title('X_delta(f) at fs=200'); +xlabel('---> f'); diff --git a/1592/CH6/EX6.1/Fig6_1_1.jpg b/1592/CH6/EX6.1/Fig6_1_1.jpg new file mode 100755 index 000000000..da804b671 Binary files /dev/null and b/1592/CH6/EX6.1/Fig6_1_1.jpg differ diff --git a/1592/CH6/EX6.1/Fig6_1_2.jpg b/1592/CH6/EX6.1/Fig6_1_2.jpg new file mode 100755 index 000000000..f663635ff Binary files /dev/null and b/1592/CH6/EX6.1/Fig6_1_2.jpg differ diff --git a/1592/CH6/EX6.2/Example_6_2.sce b/1592/CH6/EX6.2/Example_6_2.sce new file mode 100755 index 000000000..2b43c42a8 --- /dev/null +++ b/1592/CH6/EX6.2/Example_6_2.sce @@ -0,0 +1,44 @@ +//Scilab Code for Example 6.2 of Signals and systems by +//P.Ramakrishna Rao +//Sampling of signal and aliasing due to low Sampling frequency +clc; +clear f n X X_delta X_delta1 X_delta2 X_delta3 w; +fs=100; +for f=-200:200 + X(f+201)=5*[delta(f-75)+delta(f+75)]; +end +figure(1); +f=-200:200; +plot2d3(f,X,-2); +title('X(f)'); +xlabel('---> f'); +w=1; +n=-2; + for f=-175:175 + X_delta1(f+176)=fs*5*[delta(f-n*fs-75)+delta(f-n*fs+75)]; + end +n=n+1; + for f=-175:175 + X_delta2(f+176)=fs*5*[delta(f-n*fs-75)+delta(f-n*fs+75)]; +end +n=n+1; + for f=-175:175 + X_delta3(f+176)=fs*5*[delta(f-n*fs-75)+delta(f-n*fs+75)]; +end +n=n+1; + for f=-175:175 + X_delta4(f+176)=fs*5*[delta(f-n*fs-75)+delta(f-n*fs+75)]; +end +n=n+1; + for f=-175:175 + X_delta5(f+176)=fs*5*[delta(f-n*fs-75)+delta(f-n*fs+75)]; +end +X_delta=X_delta1+X_delta2+X_delta3+X_delta4+X_delta5; +figure(2); +f=-175:175; + +plot2d3(f,X_delta,-2); +title('X_delta(f) at fs=100'); +xlabel('---> f'); +//The Presence of the 25 HZ component in the spectrum of x_delta(t) +//Due to effect of Aliasing diff --git a/1592/CH6/EX6.2/Fig6_2_1.jpg b/1592/CH6/EX6.2/Fig6_2_1.jpg new file mode 100755 index 000000000..da804b671 Binary files /dev/null and b/1592/CH6/EX6.2/Fig6_2_1.jpg differ diff --git a/1592/CH6/EX6.2/Fig6_2_2.jpg b/1592/CH6/EX6.2/Fig6_2_2.jpg new file mode 100755 index 000000000..0a1c38f4a Binary files /dev/null and b/1592/CH6/EX6.2/Fig6_2_2.jpg differ diff --git a/1592/CH6/EX6.3/Example_6_3.sce b/1592/CH6/EX6.3/Example_6_3.sce new file mode 100755 index 000000000..03831b2cb --- /dev/null +++ b/1592/CH6/EX6.3/Example_6_3.sce @@ -0,0 +1,11 @@ +//Scilab Code for Example 6.3 of Signals and systems by +//P.Ramakrishna Rao +//Minimum no. of samples required +clc; +clear; +syms t; +x=10*cos(6*%pi*t)+4*sin(8*%pi*t); +disp(x,'x(t)'); +disp('Maximum Frequency component present: 4 Hz'); +fs=2*4; +disp(fs,'Minimum Sampling Frequency to avoid distortion is:'); diff --git a/1592/CH6/EX6.4/Example_6_4.sce b/1592/CH6/EX6.4/Example_6_4.sce new file mode 100755 index 000000000..5714826a0 --- /dev/null +++ b/1592/CH6/EX6.4/Example_6_4.sce @@ -0,0 +1,9 @@ +//Scilab Code for Example 6.4 of Signals and systems by +//P.Ramakrishna Rao +//Sampling Frequency +clc; +clear; +//x(t)=100*(sinc(100*t))^2; +fo=100; +fs=2*fo; +disp(fs,'Minimum Sampling Frequency to avoid distortion is:'); diff --git a/1592/CH6/EX6.5/Example_6_5.sce b/1592/CH6/EX6.5/Example_6_5.sce new file mode 100755 index 000000000..d42c30e70 --- /dev/null +++ b/1592/CH6/EX6.5/Example_6_5.sce @@ -0,0 +1,34 @@ +//Scilab Code for Example 6.5 of Signals and systems by +//P.Ramakrishna Rao//Output of LPF +clc; +clear; + +for f=-100:100 + X(f+101)=delta(f+100)+delta(f-100)+3*[delta(f+90)+delta(f-90)]; +end +f=-100:100; +a=gca(); +a.x_location="origin"; +a.y_location="origin"; +plot2d3(f,X,-2); +title('Spectrum of x(t)'); +xlabel('--> f'); +fs=150; +n=-1;f-n*fs + for f=-275:275 + X_delta1(f+276)=delta(f-n*fs+100)+delta(f-n*fs-100)+3*[delta(f-n*fs+90)+delta(f-n*fs-90)]; + end +n=n+1; + for f=-275:275 + X_delta2(f+276)=delta(f-n*fs+100)+delta(f-n*fs-100)+3*[delta(f-n*fs+90)+delta(f-n*fs-90)]; +end +n=n+1; + for f=-275:275 + X_delta3(f+276)=delta(f-n*fs+100)+delta(f-n*fs-100)+3*[delta(f-n*fs+90)+delta(f-n*fs-90)]; +end +X_delta=X_delta1+X_delta2+X_delta3; +figure(2); +f=-275:275; +plot2d3(f,X_delta,-2); +title('X_delta(f) at fs=150'); +xlabel('---> f'); diff --git a/1592/CH6/EX6.5/Fig6_5_1.jpg b/1592/CH6/EX6.5/Fig6_5_1.jpg new file mode 100755 index 000000000..60a9f52e0 Binary files /dev/null and b/1592/CH6/EX6.5/Fig6_5_1.jpg differ diff --git a/1592/CH6/EX6.5/Fig6_5_2.jpg b/1592/CH6/EX6.5/Fig6_5_2.jpg new file mode 100755 index 000000000..5fa8066ab Binary files /dev/null and b/1592/CH6/EX6.5/Fig6_5_2.jpg differ diff --git a/1592/CH6/EX6.6/Example_6_6.sce b/1592/CH6/EX6.6/Example_6_6.sce new file mode 100755 index 000000000..cbd3ce61e --- /dev/null +++ b/1592/CH6/EX6.6/Example_6_6.sce @@ -0,0 +1,11 @@ +//Scilab Code for Example 6.6 of Signals and systems by +//P.Ramakrishna Rao +//Sampling Frequency / Nyquist Rate +clc; +clear; +syms t; +x=12*cos(800*%pi*t)*cos((1800*%pi*t))^2; +disp(x,'x(t)'); +disp('Maximum Frequency component present: 2200 Hz'); +fs=2*2200; +disp(fs,'Minimum Sampling Frequency to avoid distortion is(Hz):'); diff --git a/1592/CH6/EX6.8/Example_6_8.sce b/1592/CH6/EX6.8/Example_6_8.sce new file mode 100755 index 000000000..82ba51734 --- /dev/null +++ b/1592/CH6/EX6.8/Example_6_8.sce @@ -0,0 +1,8 @@ +//Scilab Code for Example 6.8 of Signals and systems by +//P.Ramakrishna Rao +//Sampling Frequency of BPS +clc; +clear; +disp('Maximum Frequency component present: 25 kHz'); +fs=2*25000; +disp(fs,'Minimum Sampling Frequency to avoid distortion is:(Hz)'); -- cgit