audio telescope?
"Randy Yates" wrote in message
m...
| On 04/20/2011 10:48 PM, 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,
|
| The common telescope is a device that is "bidirectional", i.e., it
"processes"
| light both ways, and either end can be used as receiver or transmitter.
|
| "Audio telescopes" are more likely to operate electronically and are
| thus "unidirectional," so you don't have the ability to reverse
| input and output function.
Obviously you've never heard of a telephone.
|