[sdiy] Walsh Generators

[René Schmitz]

Hi all,

The resolution is defined by how precisely you can modify the 
multiplicating factors. In the extreme case you could have a constant DC 
component only, and specify the entire waveform with the multiplication 
coefficients... (At least for fourier thats the case.)

Cheers,
  René

Glen wrote:
> At 10:52 AM 3/18/2005 , Scott Gravenhorst wrote:
> 
> 
>>I'm only guessing here, but I would think that 31 Walsh functions would be
>>similar in resolution to a 31 bit DAC.  Those who know: please educate
>>me/us if that is not true.
> 
> 
>>From what I've seen so far, I would expect something closer in performance
> to a 5-bit DAC (32 steps). If the Walsh synth adds 6dB of SNR for every
> doubling of Walsh functions, and if I did the math correctly, this chip
> should yield a 30 dB SNR.
> 
> I could be totally wrong, since I'm just getting into this subject, but
> that's my first impression. Please, someone correct me, if I'm wrong.
> 
> I wonder if several of these chips could easily be ganged together somehow,
> for better quality results?
> 
> 
> take care,
> McLilith
> 

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159