Re: Bat detector calibration

[animalsounds]

> Almost all the codec on the market (herein included the ones on the PC) r=
esample the signal so they cannot generate signal much over the audible ran=
ge.=0D
 =0D
=0D
 Hmmm, in my personal experience most computer audio Interfaces (both exter=
nal USB devices and even the onboard systems on the mainboards) that offer =
a playback sample rate of 192 kHz can also generate ultrasounds up to over =
80 kHz. The frequency response may not be perfect, but it should work fine =
for calibrating the frequency dial of analog heterodyne bat detectors.=0D
 =0D
=0D
 I just tried it once again successfully on my Windows 10 Desktop PC that h=
as an onboard "Realtec High Defition Audio" device....=0D
 =0D
=0D
 Regards,=0D
 Raimund=0D