I would like to record mice vocalizations. These little guys vocalize between 20 and 120 kHz. To do this I would just like to get some kind of ultrasonic microphone and hook it up to a NI-Daq board and then record and analyze it with special software that I already have.

The problem I have is that I cannot find an ultrasonic microphone! I can find bat detectors out there but they have so much that I just don't need. Is there anyone who might be able to point me in the right direction? It would be GREATLY appreciated!!!

Thank you!

J

This goes up to 100kHz...

http://www.bksv.com/3103.asp?Types=:4939:

Being B&K, I assume it's not going to be cheap!

Cheers,
David.

I know Panasonic make similar products, so you might find luck in their catalog. It's a damn wide bandwidth for any microphone to pick up, I'm not sure how much luck you are going to have.

Maybe you're confusing it with some old Technics headphones with 3 Hz - 100 kHz range? I doubt Panasonic offers ultrasonic mikes even for their professional AV equipment.

Currently Sennheiser has studio microphone with frequency response up to 50 kHz.

The lowest one I've seen is this;

Sony ECMMS957 Digital Microphone
Audio Input Details: Stereo (mid-side) - 50 - 18000 Hz - Effective Output Level -45.8 dB ± 3 dB - Output Impedance 600 Ohm ± 30%

Hmm, "ultrasonic" means it goes over upper limit of human hearing (18 kHz can be called ultrasound for deaf people though ).

http://en.wikipedia.org/wiki/Ultrasound

So we can finally put the debate of if there is a use for 192KHz audio recording to bed. I bet the people who specified that as the max rate for DVD-A never thought of recording mouse calls

Some resarch turns up a german company which makes this sort of thing

http://www.avisoft.com/usg/microphones.htm

Their base model seems to do 10-120KHz which sounds like what you need.

Why do you want to record mice? I cannot think that anybody would buy their records.

They are the race of hyper-intelligent pan-dimensional beings (according to sci-fi "The hitchhiker's guide to the galaxy"). BTW, dolphins, which also vocalize in ultrasonic range, are known to be somewhat intelligent.

I wrote lowest didn't I!

I ment highest!

GRAS makes measurement grade 1/8" (3.5 mm) pressure microphones capable of operating from 10 Hz - 140 kHz and can be used with most NI products. A 1/4" microphone (7 mm) handles up to 100 kHz. Check GRAS at www.gras.dk (pressure and free field microphones).

Chipmunks tribute band.