voice synthesisΒΆ
Gameduino’s sound uses a 64-voice synthesizer. Each voice can generate a simple sine wave at any frequency up to 8KHz. Used separately, that’s 64 simple sine-wave instruments. But by combining them you can create more complex sounds. By using all 64, you can create a surprisingly rich sound.
One easy way of capturing sounds is to use Audacity’s Frequency Analysis function, saving the sound’s spectrum as a file using Export:
There is a function in the toolkit gameduino.prep.spectrum() that loads Audacity spectrum files, and returns a list of 64 voice settings. Loading these settings - frequency and amplitude for all 64 voices - into the synthesizer bank is all it takes to play the sound.
Here is a complex chord, recreated using the Gameduino:
Inserting a short delay between the loading of each voice creates the slow buildup.
Another series of sounds, these ones taken from an 80s synth-pop hit:
Name that tune...
Last modified $Date: 2011-05-13 11:32:42 -0700 (Fri, 13 May 2011) $
