Zwicker effect

[Didier A. Depireux]

Charlie Wilkes <charlie_wilkes at easynews.com> wrote:

> man there is selling a machine that generates some sort of ultrasonic
> melody.  It costs $130, and he has customers who vow it has been
> effective in calming their nervous pets.  What do you think? 

Sorry, I don't think. I know some about the mechanism of hearing, but I know
nothing about music and a putative calming effect on dogs. Now would I
venture a guess. 

						Didier

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