Hello Michael,
the least expensive way to accomplish that would probably be to use an Avisoft
Bioacoustics phantom-powered electret ultrasound microphone
(http://www.avisoft.com/usg/ep3.htm) in conjunction with a cost-effective 192
kHz USB audio interface such as the E-MU Tracker Pre
(http://www.emu.com/products/product.asp?product=17511&nav=features). The
microphone would cost $550 and the audio interface about $150.
The above hardware can be operated for instance by the free Audacity software
(http://audacity.sourceforge.net), which would also allow you to create a
spectrum display (dB versus frequency) and should work both on Mac or PC
Regards,
Raimund
Avisoft Bioacoustics
http://www.avisoft.com
--- In Michael Croix <> wrote:
>
> Hello Nature Recordists,
>
> I am a product developer and working on some dog toys that incorporate
> ultrasonic sounds. I need an inexpensive way to record and display
> (decible v frequency) ultrasonic frequencies between 20kHz and 50kHz.
> Are their any USB microphones/software combinations that work well on
> Mac or PC?
>
> Best,
>
> Michael Croix
> Lucid Designs
> o: 206-528-5555
> c: 206-384-8268
> f: 206-452-5568
>
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