Opposite of noise gate?

[Doug Hill]

Hi all.  I just bought a compressor/gate recently and after playing with it I
thought it'd be cool to have a gadget which did the opposite of a noise gate. 
That is, instead of the gate opening when triggered, the gate would close. 
I'm thinking it'd be interesting to hook it up to the trigger out of a drum
machine to produce choppy stuttering-type effects.

In typing this I guess this sounds a bit like ducking. I can think of a couple
of differences though:

a) both the noise gate and ducking both depend on the level of the source
signal (at least with my compressor/gate).  I'm talking about an external way
to trigger the gate (i.e. drum machine).

b) usually a ducker will reduce the level of the signal.  I'd like to be able
to stop the signal altogether perhaps with adjustable gate attack & release
times.



Is there such a thing already?  If not, anyone have any ideas on how to build
one?  I can read a schematic and put stuff together but I'm no EE.

-doug