Patent ID: 9391580
Filing Date: 2016-07-12
CPC Classification: G08B,H03G,H04R

Claim Text:
1. A system, comprising: a microphone configured to convert individual ambient sounds including a discrete sound to individual digital audio samples including a discrete signal; a device including a memory with an audio injection application installed thereon, wherein the application comprises: an equalizer module that generates an anti-noise signal using the individual digital audio samples and analyzes a range of sound characteristics for each of the individual digital audio samples via a Fast Fourier Transform heuristic to transform a set of digital audio samples into complex numbers representing the range of sound characteristics; a selector module that applies a selection heuristic to select the discrete signal from the individual digital audio samples based on the sound characteristics and a duration threshold, wherein the selection heuristic includes a Boolean selection heuristic configured to match in real time each complex number produced by the equalizer module to a set of predetermined complex numbers from a network-based server according to a geographic location of the device; and an audio module that supplies, to an output speaker, the anti-noise signal and an insert signal generated according to the discrete signal selected by the selection heuristic into a supplied audio stream at a pre-defined level based on an operation configuration to eliminate or reduce the ambient sounds and enhance situational awareness.