Pausing or freezing on oscillator

[breather-resistor]

Is there a way one could pause or freeze an oscillation...  say for example use a momentary switch to freeze a phaser?

any ideas?

geoff

[Sir H C]

Sample and hold could do it.  But the oscillator would still be running.  But if you then fed that s/h output to the oscillator such that it overpowers the charge/discharge circuit, I guess you could hold the oscillator too.

[tommy.genes]

R.G. gave me a tip on how to "trigger" an LFO from a certain set point in THIS THREAD.

I realize this is probably not exactly what you wanted, which seems to be a switch that would freeze the LFO at exactly the point when you pressed it, but it might provide a start.

-- T. G. --

[Paul Perry (Frostwave)]

Another thing that is tragically easy to do - if you are using a microprocessor to generate the LFO!
Otherwise, as has been said, one has to trigger a sample and hold to grab the instantaneous value of the LFO signal. How long you could hold it for, I wouldn't like to say.. I'm thinking 10 seconds or so at least. I imagine it would be possible to at the same time freeze the integrator part of the LFO generator (if it was that kind of LFO!) and restart later.