公开(公告)号：US20200278239A1

公开(公告)日：2020-09-03

申请号：US16806609

申请日：2020-03-02

Applicant: Trinity Gunshot Alarm System, LLC

Inventor： Stacy Jax ,  Martin Mauersberg

IPC: G01H3/08 ,  G10L25/51 ,  G10L25/18

Abstract: A system and method for detecting the occurrence of a gunshot are provided. The method may include receiving acoustic signals at a microphone indicative of a magnitude of the acoustic signal at a plurality of discrete frequencies, converting the acoustic signals to a digital signal and then employing a Goertzel algorithm based digital signal filter on the digital signal to produce Goertzel magnitudes at the plurality of discrete frequencies. The method subsequently determines if a maximum value of the digital signal is higher than a predefined threshold value. If the threshold value is exceeded, the method predicts if the Goertzel magnitudes at the plurality of discrete frequencies are indicative of a gunshot sound via gradient boosting; and, transmits a signal indicative of a gunshot occurrence after predicting if a possible gunshot event has occurred. A debouncer may also be utilized to suppress duplicative signals.

公开(公告)号：US10955287B2

公开(公告)日：2021-03-23

申请号：US16806609

申请日：2020-03-02

Applicant: Trinity Gunshot Alarm System, LLC

Inventor： Stacy Jax ,  Martin Mauersberg

IPC: G01H3/08 ,  G10L25/18 ,  G10L25/51

Abstract: A system and method for detecting the occurrence of a gunshot are provided. The method may include receiving acoustic signals at a microphone indicative of a magnitude of the acoustic signal at a plurality of discrete frequencies, converting the acoustic signals to a digital signal and then employing a Goertzel algorithm based digital signal filter on the digital signal to produce Goertzel magnitudes at the plurality of discrete frequencies. The method subsequently determines if a maximum value of the digital signal is higher than a predefined threshold value. If the threshold value is exceeded, the method predicts if the Goertzel magnitudes at the plurality of discrete frequencies are indicative of a gunshot sound via gradient boosting; and, transmits a signal indicative of a gunshot occurrence after predicting if a possible gunshot event has occurred. A debouncer may also be utilized to suppress duplicative signals.