send control-C to a process?

[Phil Davis]

On a Mac I want to 'type' control-C to a process I opened for update. 
(I'm using SoX to record some spoken audio, and I want to tell it to 
end.) How do I do it?

I found I can just close the process and the audio is preserved in the 
output file, but then Finder seems to have no idea what the audio 
duration is.

Thanks and happy holidays to all -

-- 
Phil Davis