Aristotel Digenis

Updated Bidules for Mac

Posted on December 25, 2014 by aristotel

The Mac versions of the Bidule plugins on this site have until now supported both PowerPC and x86 Macs. This means there was no support for x64 architectures, so unless you were running Bidule in 32 bit mode (see screenshot below), the Bidules were not recognised.

I have now rebuilt the Bidules (both MIT HRTF and Ambisonic ones) for the Mac only, with support for both 32 and 64 bit architectures. However I have dropped support for PowerPC platforms (did anybody still use it?).

Bet Sites UK

Get the new plugins here and here.

Option to run Plogue Bidule in either 32 or 64 bit mode.

Posted in Uncategorized | 4 Comments

Bye SourceForge, Hello GitHub

Posted on December 24, 2014 by aristotel

I recently started to use Git and GitHub (as well as BitBucket for private stuff) and quite like it. So I have moved both of my SourceForge projects over to GitHub:

ambisonic-lib
mit-hrtf-lib

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MusicHackDay London 2014

Posted on December 20, 2014 by aristotel

This month I attended my first MusicHackDay event in . I went along with work colleague and we managed to implement ““, which stands for “Fast Forward Time Machine”. The idea is that the user types in the name of a music artist, and FFTM will play a selection of music samples by the artist over the span of their career, in chronological order. There is also a basic speech system implemented on top of the music which narrates the song name and the year of the release.

Implemented in Python, this is how it works:

Firstly, we query the MusicBrainz database for the artist.
Then we check for available MP3 previews of songs in 7Digital.
After that we cap the number of tracks per year to N number of tracks.
The previews are downloaded.
The text to speech DJ starts to introduce the artist playlist with a variety of phrases that are randomly generated.
Each of the previews are played one after the other with supporting transition effects.
For each song the DJ mentions the Year of the release and the name of the song.

Here is what it looks like:

Posted in Audio, Programming | Leave a comment

Convolution Code Example

Posted on March 13, 2011 by aristotel

People who use hrtflib often don’t have a background in audio programming, and so they ask me what to do with the output of that library. The answer is convolution. There is tons of information on the net about it, and there is lots of cover on it but I wanted to put up a simple code sample in C, to show how convolution works. Here it is:

void Convolve(const float* const input,
              unsigned int inputLength,
              const float* const filter,
              unsigned int filterLength,
              float* output)
{
        unsigned int i;
        unsigned int j;
        unsigned int lengthOfOutput = inputLength
                                    + filterLength - 1;
 
        for(i = 0; i  lengthOfOutput; ++i)
        {
                output[i] = 0.f;
        }
 
        for(i = 0; i  inputLength; ++i)
        {
                for(j = 0; j  filterLength; ++j)
                {
                        output[i + j] += input[i] * filter[j];
                }
        }
}

Posted in Audio, DSP, Programming | 6 Comments

Killzone 3 Helghast Edition Unboxing

Posted on February 25, 2011 by aristotel

I am a massive Killzone fan, and guess what arrived today! The Helghast edition of the latest instalment! Here are some photos of what is in it!

“Brand new”

Posted on February 25, 2011 by aristotel

This is a move from having a custom site to using WordPress based site. It will take a while to move the old website to the new one, but at least it is up!

Posted in Uncategorized | Leave a comment

Updated Bidules for Mac

Bye SourceForge, Hello GitHub

MusicHackDay London 2014

Convolution Code Example

Killzone 3 Helghast Edition Unboxing

“Brand new”

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