Ultrasound Detection

[pkme2]

Can someone recommend a device that is wholly independent or will possibily hookup to a computer?
Detecting ultrasounds from 20,000 to 45,000cps.
To make the story short, it seems a device maybe disturbing our dog. We can't ascertain why a dog would start barking at set intervals and at certain time periods.
We need to find out if such a device exists. Your help will be appreciated in this matter.
Thanks for any assistance.

 

[pkme2]

bump

 

[MrColin]

I don't know about such devices but you could try stuffing your dog's ears with cottonballs or something shortly before the reaction and see if it has any effect.

Please do describe your problem in more detail...

 

[pkme2]

The dog seems to be irritated by whatever and starts barking for no apparent reason.
It occurs only occasionally but it seems something is definitely occurring to bother the dog. He seems to bark in one direction at intervals. I can't hear what could be the problem because there obvious source or sound. The dog's ears seem to perk up like he hearing something. That's the reason for detection equipment. If there a somewhay I can hook up an oscilloscope to a sensor I'm opened to suggestions.

 

[Eeezee]

Your dog could just be insane

 

[pkme2]

 

[cerebusPu]

a bat detector will convert sounds in that frequency range into audible range
http://www.google.com/search?hl=en&lr=&c2coff=1&q=bat+detector

letme know if that seems appropriate

 

[KoolAidKid]

Not easy to do cheaply IMO.

Find a mic that has a good response at those frequencies. Find a sound card that can record at a sampling rate of at least 96 kHz. Take a look at the spectral content of what you recorded using Sound Forge or something similar.

Or do the bat detector thing, it looks interesting.

 

[pkme2]

Thanks, found bat detector device at $90. Can read frequencies from 26KHz to 40KHz.