[sdiy] The Anything Box: Laptop as module?

[media.nai at rcn.com]

>There are plenty of sequencers that record frequency. Use frequency to
>voltage converters to derive control voltages. FM
>
>There are plenty of sequencers that record amplitude. Detect the amplitude
>to derive control voltages. AM

There are sequencers that can convert pitch and amplitude to MIDI, but
afaik, none of them can generate DC voltages.  Even if they could, digital
audio interfaces are AC coupled.