Oh yeah talking of posts. According to my site statistics I am getting around a thousand or so clicks a week. My question is why are spams the only ones sending me comments? Please leave comments!!

If you are viewing this in a link in a other than my own site you may not able to see the bigger picture. Please view this in my own site. (http://johnroach.info/2010/05/a-pretty-picture/)

int ab=10;
int array[ab];

And surprisingly it didn’t work. (I mean it works in C++ and C#)
Anyway I was thinking of ways on how to do this thought of using malloc() however I really didn’t know how hence I did some Google’ing around. And found this neat piece of code.

int *resize_array(int *a, size_t new_size)
{
  int *save;

  save = realloc(a, new_size);
  if (save == NULL) {
    fprintf(stderr, "Memory exhausted\n");
    exit(EXIT_FAILURE);
  }
  return save;
}

int *user_old_array; // the array
int new_array_size=10;
user_old_array = malloc(initial_array_size * sizeof *user_old_array); //resized array

Quite neat isn’t it. I thought I should probably write this somewhere so I won’t forget. Hence the post.

Enjoy!

Listen here for the first peace here : Emily Howell 1

Or download from here : Emily Howell 1

Listen to the second peace from here: Emily Howell 2

Or download from here : Emily Howell 2

Enjoyed it? Which one felt odd? The first one? The second one?

Now the crux of the matter. Which do you think was written by an AI (Artificial Intelligence) ?

Both pieces above were written by a computer software. Designed by David Cope.

A short wiki search on David Cope :

UC Santa Cruz emeritus professor David Cope is ready to introduce computer software that creates original, modern music. (Catherine Karnow)

David Cope (b. San Francisco, California, United States, May 17, 1941) is an American author, composer, scientist, and professor emeritus of music at the University of California, Santa Cruz. His primary area of research involves artificial intelligence and music; he writes programs and algorithms that can analyze existing music and create new compositions in the style of the original input music. In addition to regular music classes, he teaches a summer Workshop in Algorithmic Computer Music that is open to the public as well as a general education course entitled Artificial Intelligence and Music for enrolled UCSC students.

His software has started angering people who believe music can only written with soul. And the above is nothing more than random notes. However what they don’t realize is that maybe your computer gains its soul with this neat little software.

I do believe that one day computers will gain their full sentience. They will be aware and start asking the serious questions. And I do believe that creating music by using AI software is just brilliant.

Tell me what you think! Is this music real enough for you?

Peace!

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function am_modulation
 
N=2000;
F=(-N/2:N/2-1)/N;
 
user_entry1 = input('Please enter carrier freq [Press enter for default fc=0.25] :');
if isempty(user_entry1)
    fc=0.25;
else
    fc=user_entry1;
end
 
user_entry4 = input('Please enter amplitude of carrier wave [Press enter for default Ac=1] :');
if isempty(user_entry4)
    Ac=1;
else
    Ac=user_entry4;
end
 
n=0:1:256;
 
c=Ac*cos(2*pi*n*fc);
subplot(2,2,1)
plot(F, fftshift(abs(fft(c,N))));
title('Carrier Wave at frequency-domain');
xlabel('frequency'), ylabel('amplitude');
grid on;
 
 
 
user_entry2 = input('Please enter message freq [Press enter for default fm=0.01] :');
if isempty(user_entry2)
    fm=0.01;
else
    fm=user_entry2;
end
 
user_entry5 = input('Please enter message amplitude [Press enter for default Am=1] :');
if isempty(user_entry5)
    Am=1;
else
    Am=user_entry5;
end
 
m=Am*cos(2*pi*fm*n);
subplot(2,2,2)
plot(F, fftshift(abs(fft(m,N))));
title('Message at frequency-domain');
xlabel('frequency'), ylabel('amplitude');
grid on;
 
 
user_entry3 = input('Please enter amplitude sensitivity cnst. [Press enter for default ka=0.5] :');
if isempty(user_entry3)
    ka=0.5;
else
    ka=user_entry3;
end
 
s=(1+m.*ka).*c;
 
subplot(2,2,[3 4])
plot(F,fftshift(abs(fft(s,N))));
title('AM waveform at frequency-domain');
xlabel('frequency'), ylabel('amplitude');
grid on;

Here is an example result of the code ;

Enjoy & peace!