This might be oversimplifying it but...

You have a trigger going to either a "toggle actor" or an on/off input; is there any reason why you can't have a secondary connection going out of the same trigger that leads to a "trigger delay" that you at for a really short time period (0.1seconds or something) that will then flip the same switch.

That way you have your brief toggle all ready to go.

Just make sure the value's "init." State is set to "off" so that you don't get any weird behaviour.

sometimes you can't see the wood for the trees

 Take note of Inputs and Outputs that are a Green Color. These inputs/outputs can change to match the type of the IO being attached.

example: the Javascript actor can mutate its inputs to Float, Integer, Text, boolean (all numeric and text options). Each will be seen with a green ball until the type is set/connected.

thanks! at the moment the quick-and-dirty way with the Pulse Value actor suits my way of working, but when i want a more precise audio response this will be useful.

Maybe I am wrong, but it seems to me you want to use the either the Sound Level Watcher or the Sound Frequency bands actors, so that you can see the output readings.

Once you have these reading you can use a Comparator to check if the value is Greater Than a threshold value.
That gets you what you asked for, I believe.

I also added using my Value Decay actor as a way to slow the decay. It may provide an extra level of control for you.
Available at: https://troikatronix.com/add-o...

But really the Comparator will give you the within range (above/below a threshold) that you asked for.

great. thanks very much. I have never used that Actor before! It provides exactly the kind of one-hit timed switch that I'm looking for. And it's a very simple solution too, which i like :-)

Try this:

thanks I very much appreciate the fast reply, but i can't make sense of your solution for my problem at the moment, so i will use an invented example to represent it:

in this simple example a trigger value of 9.7 in the left channel of the Sound Level Watcher triggers the Toggle to 'on', bypassing the Difference Actor. But the next time the trigger level is reached it will trigger an 'off', having the opposite outcome. 

What I want is for the trig level value 9.7 value to trigger 'on' every time, and for the bypass to return to 'off' by default when there is no trigger arriving at the Toggle Actor.

best

Jean-François