measuring ultrasonic sound

[worldsgonemad]

Is there a device you can buy that detects and measures ultrasonic sound? If so how much would i have to spend to get one? Any links to such devices?

Thanks

[swansont]

Yes. You should use a search engine to find them.

[Externet]

There is a few ways to turn ultrasonics into sonics for the use of 'normal' test equipment. If not in the market, would need to be built to suit needs.  Not a too difficult task.

One is a frequency divider, 

---> https://www.incbtech.com/index.php/articles/79-bionics-and-medicine/466-ultrasonic-sound-converter-hearing-the-unheard-bm013

Another is a frequency mixer with the vintage NE602 integrated circuit (heterodyning) or other down-mixing chips.

---> https://www.n5dux.com/ham/files/pdf/Single-Chip Frequency Converter.pdf

---> https://www.bats.org.uk/about-bats/bat-detectors-1/heterodyne

Microcontrollers can do the translation to audible plus visually in a few ways.   The microphone would have to be good, really good with known specifications.   Perhaps piezoelectric from echosounder/sonar equipment if for underwater.  Whale listeners have their specialized gadgets.

---> https://www.wildlifeacoustics.com/

And as an application:

---> https://apps.apple.com/gb/app/echo-meter-touch-bat-detector/id693958125

A parabolic microphone would help all the above if fitted with a proper sensor :

---> https://search.brave.com/images?q=parabolic microphone

 

[Sensei]

The ultrasonic sound is used to measure distance by robots, such as the Arduino module. Its retail price is ~ 2 USD. It is used, for example, by automatic cleaning robots to detect obstacles in the way while cleaning dirt from the floor.

https://www.arduino.cc/reference/en/libraries/ultrasonic/

..so in the modern environment, in the city, things that emit ultrasound are literally all around you in toys that have some degree of autonomy, or in cars with automatic parking options, etc. etc.

 

Edited March 3 by Sensei