Where are they shooting from? – The source could be identified by sound

The subtle art of listening has a defensive role in the chaos of war, too.

Dutch Microflown Technologies designed a tiny device that analyzes gunshots, explosions in order to determine the coordinates of whatever made the noise. To do this, the firm is a unique acoustic vector sensing (AVS) technology.

The sensor is smaller than a match head. At its heart are two platinum strips, each 200-nanometers thick by 10 micrometers wide. They’re stretched parallel across a gap and heated to 200 degrees Celsius when operating. Air particles flowing past the strips cool them unevenly. The pattern of cooling and heating is analyzed by signal-processing software.
The inventor says a soldier near-instantly sees not only where the sound originated, but also gets information about the sound source, such as what weapon makes it. In the case of an aircraft, the device can plot its location in real-time and 3D. The operator can effectively track multiple planes, remaining invisible.

Source: dvice.com