Patent ID: 9697707
Date: 2017-07-04
CPC Classifications: G08B

Claim:
1. A detector comprising: a housing; first and second acoustic transducers carried by the housing, wherein the first acoustic transducer comprises an omnidirectional microphone and the second acoustic transducer has an arcuate sound response that extends over an angle substantially less than one hundred twenty degrees; and control circuits carried by the housing and coupled to the first and second acoustic transducers, wherein the control circuits include processing circuitry to evaluate input signal values from the first acoustic transducer and from the second acoustic transducer to detect if an indicator of a glassbreak has been received and to evaluate the input signal values from only the second acoustic transducer to determine a direction of origin of the input signal values, and wherein the angle of the arcuate sound response of the second acoustic transducer is at least partially pointed in a direction toward a protected object.