envelope generators

[Paolo Predonzani]

> 
> >Since you are making a full digital control, you can use the fact that
> >many DACs are multiplying. I saw an interesting component that performs
> >a digital attenuation. The input is 8-bit but the internal DAC is
> >17-bit. So it has a ROM LUT for the lin-exp convertion. It can be easily
> >used to add MIDI velocity to synths.
> 
> Neat!  Do you know who made this part?
> 
> 
It's the AD7111ABN. It attenuates up to 88.5 dB. The attenuation step is
0.375 dB. It has an interface for 8-bit buses (d0-d7, ~CS, ~WR).
Its cost is be between 15$ and 20$. 

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| Paolo Predonzani  |  email: predo at dist.dist.unige.it |
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