[sdiy] Attenuation in Digi-land

Matthew Smith matt at smiffytech.com
Thu Sep 8 01:26:06 CEST 2011


Quoth Veronica Merryfield at 08/09/11 08:02...
> Whilst you could use bit shift, you will be limited to attenuation of 1/2, 1/4, 1/8, 1/16 and so on (1/2^n). You might find this too limiting. 
> 
> However, if you were to take each input through a number of separate paths to an adder through bit shifters, you could implement less restrictive attenuation, for example 1/3 is approximated by 1/4+1/16+1/64

Ooh, perfect!  A nice, cheap, solution with far more control.

Thanks, Veronica.

Cheers

M
-- 
Matthew Smith

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