Is there a way to detect extremely high pitched sound waves?

Question

Thats OBVIOUSLY why i'm asking....what KIND of equipment?

:) thank you Doug and Saralites (sp?)

Answer 1

Normal humans can't hear about 20kHz, so we must rely on scientific equipment.

Answer 2

Throught use of an Ultrasonic Translator Listening Device... Unit basically consists o f a high-gain amplifier and an oscillator combining output into a mixer where the difference in signal frequency is detected, filtered, and further amplified by Q2 for powering external speakers or headsets. I'm not sure, but I think you can actually hear the sounds with one of those things, not just detect the waves.

Answer 3

Actually, most people can't hear much above 15,000 Hz. The 'equipment' needed to detect pressure vibrations (sound waves) above that frequency would consist of a microphone and (usually) some sort of oscillator to mix (hetrodyne) with the incoming frequencies of interest to shift them down to the audible range, along with filters, etc. to keep unwanted signals out. And probably some sort of amplifier to drive headphones or speakers.

That, or you could just watch them on an oscilloscope.


Doug

Answer 4

First you need a transducer that is responsive to the range of frequency you are interested in. A transducer is an apparatus that transforms one form of energy into another,in this case sound into electrical output. A microphone does this but you must select one that has high enough frequency response. This output is the result of the soundwaves and you have detected their presence.