[linux-audio-dev] sonar tracking question

[Simon Jenkins]

Tim Blechmann wrote:

>hi all,
>
>i'm currently working on an installation, where i have to track persons
>in a room ...
>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 ...
>has anyone been trying to work on something like that? if so, i'd like
>to hear about the results ...
>
>cheers... tim
>
>  
>
There's a paper (PDF) here:

http://www.media.mit.edu/resenv/pubs/papers/2002-06-IEEE-Sensors-Tapper.pdf

which describes using four transducers in the corners of a shop window 
to detect
the location of finger taps on the surface of the window. Some of it 
might be
relevant.

Also... hmmm. Could also be relevant to a cheap DIY drum pad.

Simon Jenkins
(Bristol, UK)