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Re: bat recording with AT4022 mic

Subject: Re: bat recording with AT4022 mic
From: "Avocet" madl74
Date: Fri Jun 3, 2011 9:33 am ((PDT))
> This was just an experiment because I didn't know how high AT4022
> would go in frequency... There are sounds that go up to the roof
> when using 192kHZ setting but I think the sound level might be lower
> and the noise higher, but I haven't done any real tests.

I test my bat gear with a compressed air hiss from a 12V tyre
inflator. You can get a good idea of the frequency range you are
gstting, and also of the absorption of higher frequencies with
distance if you use a power spectrum display. At 50KHz I got the
figure of an extra 1dB loss per metre which is close to the theory.

Best Wishes, David

David Brinicombe
North Devon, UK
Cogito cogito ergo cogito sum - Ambrose Bierce

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