These are some Application Note for the Texas Instruments MSP430
"A Robust Glass-Breakage Detector Using the MSP430"
http://www.ti.com/lit/an/slaa389/slaa389.pdf
"A Simple Glass Breakage Detector Using the MSP430"
http://www.ti.com/lit/an/slaa351/slaa351.pdf
MSP430 is a microcontroller that is somewhat similar to the Atmega used with Arduino,
maybe you will find some useful informations.