[sdiy] Walsh bank, was: Re: [sdiy] Micro as a Linear to Exponential converter?

[Michael O'Bannon]

>
> The great advantage of Walsh over Fourier is that coefficient 
> multiplication turns into add or subtract.  Sinewaves you need to do 
> multiplications all over the place (or that 
> double-add-with-phase-shift of Hal Alles).
>

With Walsh functions, don't you still have the final burden of adjusting 
the amplitude each of function to get the desired mix of partials?  Is 
there a way to do this in code without multiplication?  (I'm hoping the 
answer is yes, but I haven't found a way yet.)

Best regards,
Michael