About a year ago, I released a prime generator written in C#, which was able to generate 1.000.000 primes in about 45 minutes.
Anyway, myself and a bloke from my class decided to have a programming competition to see who was able to make the most efficient prime generator in a language of our choice.
I initially tried accomplishing this in Java (Don't ever do this - BigInteger is a bitch), which accomplished the task in a mere 15 minutes.
Following this, my competitor decided to turn to C++ to defeat me. And he did. Big time.
His program was able to generate 1.000.000 primes in a mere 20 seconds, defeating me by several miles.
Frustrated by my loss, I also turned to C++, where I made a program, which was able to generate 1.000.000 primes in less than 3 seconds (2.90867, to be exact).
The competition was hereby concluded.
Just for fun, here's a link to the source code of the C++ program:
30. april 2013
Mathemusica!
Mathemusica v1.0.2
So, I've begun developing a program which I call Mathemusica. What it does, in a nutshell, is making music out of equations. Yes, you heard me - music from equations.Using the function value f(x), it assigns a musical note from a chosen scale and well... makes music.
It's taken me roughly a week at current point to develop this.
Here's an image of the GUI to show you what it looks like:
The program is developed in Java and is automatically cross-platform for this reason.
Some time soon I'll release a technical summary of the program, but for now, I'm just releasing it.
If you want a sample of what this program's able to offer, here's a fun function I found while making this:
.mmx: https://dl.dropboxusercontent.com/u/19633784/Mathemusica%20Sample.mmx
.wav: https://dl.dropboxusercontent.com/u/19633784/Mathemusica%20Sample.wav
I also have a YouTube video of the program (although it's synthesized using v1.0.0, it's still valid):
Although I've worked intensely on this for the past week, I haven't made everything myself. Actually I've used two external libraries, namely "exp4j-0.3.01.jar" and "JSyn-beta-16.5.14.jar". Here's a link to the two developer's websites:
And here's a download link, if for any reason you're interested in trying it out:
Download Information
SHA256: 6397bd466a516692b7bd4c579dada4ff430dd751ec3957323722e07a55e69d53VirusTotal-link: https://www.virustotal.com/en/file/6397bd466a516692b7bd4c579dada4ff430dd751ec3957323722e07a55e69d53/analysis/1367328142/
Download Link
For archive's sake, I've released the previous two versions of the program. They do not support the current .mmx-format, but instead .mm, which is a different file-format, which is deprecated:
I'll keep working on this project for as long as I find it interesting.
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