[sdiy] Using analog for physical modeling

[aankrom]

Quantization & its error aside, BBD's are truly analog. An actual 
analog voltage is passed through the chain of capacitors at each stage. 
At no time is the information transformed into 1' & 0's. That's a good 
enough definition of analog for me.


AA

On Sun, 18 Sep 2011 12:40:34 -0700, Scott Gravenhorst wrote:
> A friend (Les Hall aka Inventor) on the electro-music.com forum came 
> up with
> something I thought was interesting.  He re-modeled a Karplus-Strong
> string model
> using analog components (assuming you consider a BBD an analog 
> device).
>
> His loop was constructed with a BBD (length, I don't know), a linear
> attenuator
> (pot) and a tunable single pole lowpass filter (one LM13700).  He
> drove the BBD
> clock with a VCO to allow tuning the delay line.  I wish I could find
> the post on
> e-m, but my fu isn't so fu.
>
> -- ScottG
> 
> ________________________________________________________________________
> -- Scott Gravenhorst
> -- FPGA MIDI Synthesizer Information:
>    jovianpyx.dyndns.org:8080/public/FPGA_synth/
> -- FatMan:
>    jovianpyx.dyndns.org:8080/public/fatman/
> -- NonFatMan:
>    jovianpyx.dyndns.org:8080/public/electronics/
> -- When the going gets tough, the tough use the command line.
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy