scott wrote:

> Modulate a 1 kHz tone with a N Hz square wave.  At what value of N do 
> you cease to be able to recognise the 1 kHz tone turning on and off? 

Yes, this is the experiment to perform.

> I suspect it's somewhere around 20 Hz, you could easily figure it out with 
> a sound editor program like Audacity.

I'd probably use my synthesizer actually, but anyway... ;-)

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