[music-dsp] achieving chiptunes sounds

Alan Wolfe alan.wolfe at gmail.com
Wed Dec 22 19:01:24 EST 2010


i tried the variable rectangle wave and that sounds A TON more like
old early nes style game music.  Even without sound degradation it
really sounds a lot like a "chiptune"

im going to try the quick arpeggios next (:

On Tue, Dec 21, 2010 at 2:49 AM, Laurent de Soras
<laurent.de.soras at free.fr> wrote:
>
>> What is it that old system (and chiptunes) have that make them sound
>> so distinctly recognizable like they are?
>
> As Didier implied, most of the 8-bit sound character comes from
> the voice control system. The chip parameters (pitches, volumes,
> waveforms, etc) are generally refreshed by the software in
> a vertical blank related timer, every 1/50 or 1/60 s.
> Chiptunes make an extensive use of arpeggios and complex,
> fast pitch envelopes, making them sound very different from
> classic synthesizers.
>
> Anyway, the produced sound should be quite clean. There is
> no need to introduce aliasing or quantification on the
> final signal.
>
>
> --
> Laurent de Soras                  |               Ohm Force
> DSP developer & Software designer |  Digital Audio Software
> http://ldesoras.free.fr           | http://www.ohmforce.com
>
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