Signal Processing and Demos Updated

17 files changed, 193 insertions, 0 deletions

diff --git a/tests/unit_tests/test_analogFilters/scilabcode/main.sci b/tests/unit_tests/test_analogFilters/scilabcode/main.sci
new file mode 100644
index 0000000..85fc494
--- /dev/null
+++ b/tests/unit_tests/test_analogFilters/scilabcode/main.sci
@@ -0,0 +1,33 @@
+// This is the demo function to test the analog filters
+// They are of 4 types butterworth,chebyshev-1,chebyshev-2 and elliptic
+// We are going to test here the butterworth, chebyshev-1 and chebyshev-2 filters
+//zpbutt->butterworth filter
+//zpch1 ->chebyshev type-1 filter
+//zpch2 ->chebyshev type-2 filter
+function main()
+	n=5;		      //n is the filter order
+        fl=3;                 //fl is the cutoff frequency
+        [pb,gb]=zpbutt(n,fl);
+	disp("poles of butterworth filter")
+        disp(pb);
+	disp("gain of butterworth filter");
+        disp(gb);
+
+        e=0.5;               //e (epsilon) it is the ripples in pass band
+        wc=4;                // wc cutoff frequency 
+        [pc1,gc1]=zpch1(n,e,wc);
+	disp("poles of chebyshev-1 filter")
+        disp(pc1);
+	disp("gain of chebyshev-1 filter")
+        disp(gc1);
+
+        a=4;		     //a is the attenuation in stop band
+        w=5;                 //w (omega) is the cutoff frequency
+        [zc2,pc2,gc2]=zpch2(n,a,w);
+	disp("zeros of chebyshev-2 filter")
+        disp(zc2);
+	disp("poles of chebyshev-2 filter")
+        disp(pc2);
+	disp("gain of chebyshev-2 filter")
+        disp(gc2);
+endfunction
diff --git a/tests/unit_tests/test_analogFilters/scilabcode/zpbutttest.sci b/tests/unit_tests/test_analogFilters/scilabcode/zpbutttest.sci
new file mode 100644
index 0000000..1ea723d
--- /dev/null
+++ b/tests/unit_tests/test_analogFilters/scilabcode/zpbutttest.sci
@@ -0,0 +1,7 @@
+function zpbutttest()
+    n=5;
+    fl=3;
+    [p,g]=zpbutt(n,fl);
+    disp(p);
+    disp(g);
+endfunction
diff --git a/tests/unit_tests/test_analogFilters/scilabcode/zpch1test.sci b/tests/unit_tests/test_analogFilters/scilabcode/zpch1test.sci
new file mode 100644
index 0000000..4f29e0d4
--- /dev/null
+++ b/tests/unit_tests/test_analogFilters/scilabcode/zpch1test.sci
@@ -0,0 +1,9 @@
+function zpch1test()
+
+    N=5;         //N is the filter order
+    e=0.5;       //e (epsilon) it is the ripples in pass band
+    wc=4;        // wc cutoff frequency 
+    [p,g]=zpch1(N,e,wc);
+    disp(p);
+    disp(g);
+endfunction
diff --git a/tests/unit_tests/test_analogFilters/scilabcode/zpch2test.sci b/tests/unit_tests/test_analogFilters/scilabcode/zpch2test.sci
new file mode 100644
index 0000000..665fb41
--- /dev/null
+++ b/tests/unit_tests/test_analogFilters/scilabcode/zpch2test.sci
@@ -0,0 +1,9 @@
+function zpch2test()
+    n=5;
+    a=4;
+    w=5;
+    [z,p,g]=zpch2(n,a,w);
+    disp(z);
+    disp(p);
+    disp(g);
+endfunction
diff --git a/tests/unit_tests/test_filterResponse/scilabcode/buttmagtest.sci b/tests/unit_tests/test_filterResponse/scilabcode/buttmagtest.sci
new file mode 100644
index 0000000..c7426c2
--- /dev/null
+++ b/tests/unit_tests/test_filterResponse/scilabcode/buttmagtest.sci
@@ -0,0 +1,7 @@
+function buttmagtest()
+    smp=[1:5];
+    od=6;
+    frq=2.2;
+    oup=buttmag(od,frq,smp);
+    disp(oup);
+endfunction
diff --git a/tests/unit_tests/test_filterResponse/scilabcode/cheb1magtest.sci b/tests/unit_tests/test_filterResponse/scilabcode/cheb1magtest.sci
new file mode 100644
index 0000000..7d09637
--- /dev/null
+++ b/tests/unit_tests/test_filterResponse/scilabcode/cheb1magtest.sci
@@ -0,0 +1,8 @@
+function cheb1magtest()
+    od=5;
+    wfc=3;
+    eps=0.3;
+    sap=[1:5];
+    out=cheb1mag(od,wfc,eps,sap);
+    disp(out);
+endfunction
diff --git a/tests/unit_tests/test_filterResponse/scilabcode/ell1magtest.sci b/tests/unit_tests/test_filterResponse/scilabcode/ell1magtest.sci
new file mode 100644
index 0000000..b53c435
--- /dev/null
+++ b/tests/unit_tests/test_filterResponse/scilabcode/ell1magtest.sci
@@ -0,0 +1,7 @@
+function ell1magtest()
+    eps1=0.2;
+    m11=0.4;
+    z1=[1,2,3];
+    [s1]=ell1mag(eps1,m11,z1);
+    disp(s1);
+endfunction
diff --git a/tests/unit_tests/test_filterResponse/scilabcode/main.sci b/tests/unit_tests/test_filterResponse/scilabcode/main.sci
new file mode 100644
index 0000000..6a8cbc5
--- /dev/null
+++ b/tests/unit_tests/test_filterResponse/scilabcode/main.sci
@@ -0,0 +1,20 @@
+function main()
+
+	order=5;
+	sample1=[1:5];
+        frq=2.2;
+    	out1=buttmag(order,frq,sample1);
+    	disp(out1); 
+
+        wfc=3;
+        eps=0.3;
+        sample2=[1:5];
+        out2=cheb1mag(order,wfc,eps,sample2);
+        disp(out2);
+        
+	eps1=0.2;
+        m11=0.4;
+        z1=[1,2,3];
+        [s1]=ell1mag(eps1,m11,z1);
+        disp(s1);
+endfunction
diff --git a/tests/unit_tests/test_jacobi/scilabcode/main.sci b/tests/unit_tests/test_jacobi/scilabcode/main.sci
new file mode 100644
index 0000000..ee229eb
--- /dev/null
+++ b/tests/unit_tests/test_jacobi/scilabcode/main.sci
@@ -0,0 +1,18 @@
+// Demo function to test %sn and %k functions
+// %sn is the Jacobi's elliptic function
+// %k is the Jacobi's complete integral
+function main()
+	u=[1+2*%i 2+3*%i 3+1*%i];  // the corresponding complex vector
+        k=0.6;                     // parameter of elliptic integral
+        [out]=%sn(u,k);
+        disp(out);
+	m=[0.1 0.2 0.3];	   // parametrt of Jacobi complete integral
+        s=%k(m);
+        disp(s);
+endfunction
+
+//Output
+//for %sn
+// 1.5641568 - 0.2037920i    1.0580372 + 0.0100213i    1.1386855 - 0.4631921i  
+// for %k
+// 1.6124413    1.6596236    1.7138894 
diff --git a/tests/unit_tests/test_jacobi/scilabcode/modktest.sci b/tests/unit_tests/test_jacobi/scilabcode/modktest.sci
new file mode 100644
index 0000000..613cd33
--- /dev/null
+++ b/tests/unit_tests/test_jacobi/scilabcode/modktest.sci
@@ -0,0 +1,5 @@
+function modktest()
+    m=[0.1 0.2 0.3];
+    s=%k(m);
+    disp(s);
+endfunction
diff --git a/tests/unit_tests/test_jacobi/scilabcode/modsntest.sci b/tests/unit_tests/test_jacobi/scilabcode/modsntest.sci
new file mode 100644
index 0000000..dc5d435
--- /dev/null
+++ b/tests/unit_tests/test_jacobi/scilabcode/modsntest.sci
@@ -0,0 +1,6 @@
+function modsntest()
+    u=[1+2*%i 2+3*%i 3+1*%i];  // the corresponding complex vector
+    k=0.6;                     // parameter of elliptic integral
+    [out]=%sn(u,k);
+    disp(out);
+endfunction
diff --git a/tests/unit_tests/test_string/scilabcode/asciitest.sci b/tests/unit_tests/test_string/scilabcode/asciitest.sci
new file mode 100644
index 0000000..aa0017d
--- /dev/null
+++ b/tests/unit_tests/test_string/scilabcode/asciitest.sci
@@ -0,0 +1,11 @@
+//This function test the ascii function in scilab.
+//Ascii function takes the input string and then gives the ascii code of the string.
+// The output for the scilab will be:-
+//[97.    110.    107.    105.    116.    32.    105.    115.    32.  114.    97.    106.] 
+ 
+function asciitest()
+    y="ankit is raj";  //This is the input string for testing the function.
+    x=ascii(y);       //calling of the function
+    disp(x);
+endfunction
+
diff --git a/tests/unit_tests/test_string/scilabcode/asciitest2.sci b/tests/unit_tests/test_string/scilabcode/asciitest2.sci
new file mode 100644
index 0000000..ca7dcb7
--- /dev/null
+++ b/tests/unit_tests/test_string/scilabcode/asciitest2.sci
@@ -0,0 +1,5 @@
+function asciitest2()
+    d=[97 98 99 100 101];
+    si=ascii(d);
+    disp(si);
+endfunction
diff --git a/tests/unit_tests/test_string/scilabcode/main.sci b/tests/unit_tests/test_string/scilabcode/main.sci
new file mode 100644
index 0000000..4030ee0
--- /dev/null
+++ b/tests/unit_tests/test_string/scilabcode/main.sci
@@ -0,0 +1,30 @@
+//This is the demo function to test a set of string functions
+// ascii->converts the input char vector/array to corresponding ascii code or vice versa
+// strchr-> it finds the occurence of a charcter in a given string
+// strncpy->copy charcters from string
+// strspn-> get span of character set in string
+
+function main()
+	strascii1="ankit is raj";  //This is the input string for testing the function.
+    	asciiout1=ascii(strascii1);       //calling of the function
+    	disp(asciiout1);
+
+	strascii2=[97 98 99 100 101];  //Input as the ascii code to get converted to string
+    	asciiout2=ascii(strascii2);           //calling the function
+    	disp(asciiout2);
+
+	str="This is a sample string";  
+        ch="s";
+    	out1=strchr(str,ch);
+    	disp(out1);
+	
+	ss="Ankit Raj";
+        nn=5;
+        resu=strncpy(ss,nn);
+        disp(resu);
+
+    	strsample2="Hello this is Ankit";
+        a="Ank";
+        oup2=strspn(a,strsample2);
+    	disp(oup2)
+endfunction
diff --git a/tests/unit_tests/test_string/scilabcode/strchrtest.sci b/tests/unit_tests/test_string/scilabcode/strchrtest.sci
new file mode 100644
index 0000000..f8d3419
--- /dev/null
+++ b/tests/unit_tests/test_string/scilabcode/strchrtest.sci
@@ -0,0 +1,6 @@
+function strchrtest()
+    s="This is a sample string";
+    ch="s";
+    y=strchr(s,ch);
+    disp(y);
+endfunction
diff --git a/tests/unit_tests/test_string/scilabcode/strcspntest.sci b/tests/unit_tests/test_string/scilabcode/strcspntest.sci
new file mode 100644
index 0000000..9a03c57
--- /dev/null
+++ b/tests/unit_tests/test_string/scilabcode/strcspntest.sci
@@ -0,0 +1,6 @@
+function strcspntest()
+    x="123243545assdsc";
+    y="anki5t3";
+    z=strcspn(y,x);
+    disp(z);
+endfunction
diff --git a/tests/unit_tests/test_string/scilabcode/strncpytest.sci b/tests/unit_tests/test_string/scilabcode/strncpytest.sci
new file mode 100644
index 0000000..14eceb8
--- /dev/null
+++ b/tests/unit_tests/test_string/scilabcode/strncpytest.sci
@@ -0,0 +1,6 @@
+function strncpytest()
+    ss="Ankit Raj";
+    nn=5;
+    resu=strncpy(ss,nn);
+    disp(resu);
+endfunction