audio telescope?
On 21/04/2011 03:48, RichD wrote:
This may be a dumb question, I never studied acoustics....
If you look into the wrong end of a telescope,
everything looks reduced, 'anti-magnified'.
Is there anything analogous acoustically?
In both cases, the phenomena is described
by wave equations -
--
Rich
An old fashioned ear trumpet turned around the wrong way would do
something similar.
An electronic amplifier makes things sound louder, Sound insulation
makes things sound quieter.
The display on a ship sonar allows the image to be zoomed in and out.
|