Subject: RE: [linux-audio-user] recording bats?
From: Cornell III, Howard M (howard.m.cornell.iii_AT_lmco.com)
Date: Mon Nov 08 2004 - 23:01:27 EET
Remember, you have to sample at a rate least twice the highest frequency
of interest. The data suggests you need the at least 192 kHz rate to
record 96kHz fundamental signal. Plus the special microphone.
Howard
-----Original Message-----
From: linux-audio-user-bounces_AT_music.columbia.edu
[mailto:linux-audio-user-bounces_AT_music.columbia.edu] On Behalf Of Chris
Cannam
Sent: Monday, November 08, 2004 2:35 PM
To: linux-audio-user_AT_music.columbia.edu
Subject: Re: [linux-audio-user] recording bats?
On Monday 08 Nov 2004 20:17, Eric Dantan Rzewnicki wrote:
> I just had a crazy idea ... Sorry if this is off topic a bit. Does
> anyone know what frequency ranges bats use? Would a 96KHz 24bit card
> be able to capture anything useful from their sounds?
Depends on the bats, but generally yes. Some of them are on the edge of
the human hearing range (I used to be able to hear the bats at my
parents' house, although my hearing is no longer quite good enough).
First Google hit for "frequency range of bats" is a bit less optimistic
than I
am:
http://hypertextbook.com/facts/1998/JuanCancel.shtml
Either way, wouldn't the microphone be more of a limiting factor than
the soundcard?
Chris
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