Re: [microsound] This Is No Two-Bit Music Player

[derek holzer <derek@xxxxxxx>]

\js wrote:

> > The music itself is all 1-bit and is generated by software written by Perich.
>
> is this accurate? wouldn't 1 bit music just be on or off? [0 1] can
> you get tone gradations out of 1 bit?

Absolutely. CF Pulse Width Modulation synthesis. You use a rectangular 
wave to create the sounds, which is essentially different combinations 
of ON and OFF. I have an old pinball game soundchip which creates sound 
in this way, and it has a "noise" generator, an LFO and a VCO all built in.

___|||_|||||__||_ [loop as needed for tone]

The sounds created are pretty full-spectrum, seeing as they come from 
rectangle/square waves. The ratio of hi/lo (0 or 1) determines timbre, 
the number of cycles determines pitch.

d.


--
derek holzer ::: http://www.umatic.nl
---Oblique Strategy # 10:
"Allow an easement (an easement is the abandonment of a stricture)"

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