On Sat, May 31, 2008 at 4:38 PM, M. Adam Davis wrote: > I need to detect a vehicle door closing from a device inside the > vehicle. This will be used to trigger a telemtry device, and must be > installed by Your Grandma (TM) so it really can't be a switch and > wiring to the device. > > Thus I'm trying to develop an algorithm that uses sound (via > microphone) to detect likely door closing events. > > I haven't gone out with a recorder yet, but figuring out the > difference between a cough and a door closing in a car with windows > down does not seem trivial. > > I'm using the AVR32 UC3 devices, so I've got a bit of processing power. > > What sound detection algorithms have you seen, or what ideas do you > have (brainstorm on!) that I should look into? > > I'm also using other methods to trigger the device (light from the > interior lighting, accelerometer, pressure, etc) but I'm primarily > interested in exploring the sound detection in this particular thread. > > -Adam Use an atmospheric pressure sensor. Cheers /Ake -- --- Ake Hedman (YAP - Yet Another Programmer) D of Scandinavia, Brattbergavagen 17, 820 50 LOS, Sweden Phone: (46) 73 0533 146 Company home: http://www.dofscandinavia.com Personal homepage: http://www.dofscandinavia.com/akhe Automated home: http://www.vscp.org -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist