[sdiy] AD/DA schematics? quantizers,etc

[Tom Wiltshire]

Dan,

One quick comment;

> i am really trying at first to make:
>
> a sample rate reducer or crusher

These are quite different, reducing the amount of digital data in  
either the X or the Y direction.
For a sample-rate reduction type effect, you should have a look at  
Tom Bugs' bugcrusher, although it isn't actually reducing any sample  
rates. Rather it's an audio-rate S&H. Still, similar sound.

A real bitcrusher effect would be generated by sampling the input  
with an A/D, then feeding only the most significant bits (you choose  
how many) to the output D/A.

I've got this effect in software on my digital oscillator. It allows  
you to reduce the output resolution from 16-bit down to 1-bit. This  
is further than anyone really needs to go, but it made the control  
easier to do!

HTH,
Tom