Subject: Re: [linux-audio-dev] sonar tracking question
From: Jens M Andreasen (jens.andreasen_AT_chello.se)
Date: Sat Jul 17 2004 - 09:55:27 EEST
On fre, 2004-07-16 at 21:42, Tim Blechmann wrote:
> hi all,
>
> i'm currently working on an installation, where i have to track persons
> in a room ...
Is that a single person at a time or several people walking around at
random?
> in theory it should be possible to track a person by the time the sound
> will need to reach the microphone ... i know, these are only ms, but
> using a tricky algorithm, it might be possible ...
With a samplerate of say 48k and two microphones you can measure phase
differences down to 1/48ms or 330m/48000 = 0.7cm
I don't know what kind of soundsource you are facing, but if it is
anything like this:
http://www.huutajat.org/HyvaMP3.mp3
... you are bound to fail ;)
mvh // Jens M Andreasen
> has anyone been trying to work on something like that? if so, i'd like
> to hear about the results ...
>
> cheers... tim
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