From 9d72926d3876a18a4d3890689bc73437b16464ff Mon Sep 17 00:00:00 2001
From: MekhiTheKing <95403331+MekhiTheKing@users.noreply.github.com>
Date: Thu, 9 Dec 2021 20:58:19 -0800
Subject: [PATCH 1/4] Add files via upload

---
 src/generate_cosine.m | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 src/generate_cosine.m

diff --git a/src/generate_cosine.m b/src/generate_cosine.m
new file mode 100644
index 0000000..8a013ed
--- /dev/null
+++ b/src/generate_cosine.m
@@ -0,0 +1,25 @@
+function x = generate_cosine(amplitude, frequency, phase, fs, duration, duty)
+% GENERATE_WAVENAME: returns a matrix of sampled WAVENAME wave
+
+% CONTRIBUTORS:
+% Mekhi Ellington: Original Creator
+
+% DOCUMENTATION:
+% phase shift is in number of periods
+% fs is the sampling frequency: how many sample points per second
+% duration is time in seconds
+% duty is a number between 0 and 1
+
+    % initialize local variables from input arguments
+    n = fs * duration; % number of samples (length of matrix)
+    dt = 1 / fs; % sampling period: time between two sample points
+    
+    % initialize a one dimensional zero matrix to be populated
+    x = zeros(1, n);
+    
+    % populate the matrix
+    for i = 1:n
+        t = i * dt;
+        x(i) = amplitude * cos(2*pi*frequency*t-phase);
+    end
+end
\ No newline at end of file

From 110dcccc03310127ce890c2a544de2dc37b3976a Mon Sep 17 00:00:00 2001
From: k7xu <k7xu@ucsd.edu>
Date: Thu, 9 Dec 2021 21:02:30 -0800
Subject: [PATCH 2/4] added pulse wave for Brian

---
 src/Generators/generate_pulse.m | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 src/Generators/generate_pulse.m

diff --git a/src/Generators/generate_pulse.m b/src/Generators/generate_pulse.m
new file mode 100644
index 0000000..6bc08bb
--- /dev/null
+++ b/src/Generators/generate_pulse.m
@@ -0,0 +1,26 @@
+function x = generate_pulse(amplitude, frequency, phase, fs, duration, duty)
+% GENERATE_puse: returns a matrix of sampled pulse wave
+
+% CONTRIBUTORS:
+% Brian Tran: Created the wave
+
+% DOCUMENTATION:
+% phase shift is in number of periods
+% fs is the sampling frequency: how many sample points per second
+% duration is time in seconds
+% duty is a number between 0 and 1
+
+    % initialize local variables from input arguments
+    n = fs * duration; % number of samples (length of matrix)
+    dt = 1 / fs; % sampling period: time between two sample points
+    
+    % initialize a one dimensional zero matrix to be populated
+    x = zeros(1, n);
+    
+    % populate the matrix
+    for i = 1:n
+       F=F+(1/n)*cos(n*2*pi*(1e+6)*t).*sin(n*pi*0.1);
+    end
+    F=F*(2*10/pi);
+    F=F+10*0.1;
+end
\ No newline at end of file

From f9cdd4c503886e655025a3e8a88cf4d285949aba Mon Sep 17 00:00:00 2001
From: MekhiTheKing <95403331+MekhiTheKing@users.noreply.github.com>
Date: Thu, 9 Dec 2021 21:13:56 -0800
Subject: [PATCH 3/4] Added Comments and Changed Formatting

---
 src/distortion_filter.m | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 src/distortion_filter.m

diff --git a/src/distortion_filter.m b/src/distortion_filter.m
new file mode 100644
index 0000000..869aab7
--- /dev/null
+++ b/src/distortion_filter.m
@@ -0,0 +1,30 @@
+% An audio is distorted based on the value of HIGH. Nothing of a certain
+% threshold should be played above this constant, or they are simply clipped to this 
+% value. Inspired from Meghaj_Echo.m and epic_effect_schluep.m.
+% Author: Jason Liang
+% Mekhi Ellington: Added some comments and editted formatting
+
+function y = distortion_filter(x, HIGH)
+  len = length(X);    %Storing length of X.
+  X = fft(x);         %X is the Fourier Transform of x.
+  X = fftshift(X);    %Shifts X.
+  Y = zeros(1, len);  %Matrix of length containing zeros.
+  
+  for ind = 1:len
+    if (X(ind) > HIGH) 
+       Y(ind) = HIGH;
+
+    elseif (X(ind) < -HIGH)
+      Y(ind) = -HIGH;
+
+    else 
+      Y(ind) = X(ind);
+
+    end
+  end
+  
+  Y = fftshift(Y); %Shifts Y.
+  y = ifft(Y); %Inverse Fourier Transform of Y.
+  y = real(y); %Stores only the real part of the complex y.
+
+end
\ No newline at end of file

From 52a3bee8440a4a864871fcd2069c1188c96fab22 Mon Sep 17 00:00:00 2001
From: k7xu <k7xu@ucsd.edu>
Date: Thu, 9 Dec 2021 21:32:24 -0800
Subject: [PATCH 4/4] Fixed my generator

---
 src/Generators/generate_pulse.m | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/src/Generators/generate_pulse.m b/src/Generators/generate_pulse.m
index 6bc08bb..2f9c316 100644
--- a/src/Generators/generate_pulse.m
+++ b/src/Generators/generate_pulse.m
@@ -13,14 +13,21 @@ function x = generate_pulse(amplitude, frequency, phase, fs, duration, duty)
     % initialize local variables from input arguments
     n = fs * duration; % number of samples (length of matrix)
     dt = 1 / fs; % sampling period: time between two sample points
-    
     % initialize a one dimensional zero matrix to be populated
     x = zeros(1, n);
-    
+    f0=1e+6;  % 1MHz
+    Fs=3e+6;
+    Tf=0.001;  % 1 millisecond
+    t=0:1/Fs:Tf-1/Fs;
+    td=0.1;   % duty cycle 
+    A0=10; % 10 Volts
+    F=0;
+    N=1000; % Number of points 
+
     % populate the matrix
-    for i = 1:n
-       F=F+(1/n)*cos(n*2*pi*(1e+6)*t).*sin(n*pi*0.1);
+    for n = 1:N
+        F=F+(1/n)*cos(n*2*pi*f0*t).*sin(n*pi*td);
     end
-    F=F*(2*10/pi);
-    F=F+10*0.1;
+    F=F*(2*A0/pi);
+    F=F+A0*td;
 end
\ No newline at end of file