US 12,452,583 B2
Hazard detecting methods and apparatuses
Sumit Kulkarni, Charlotte, NC (US); and Janmejaya Tripathy, Charlotte, NC (US)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Aug. 24, 2023, as Appl. No. 18/455,238.
Claims priority of application No. 202211049733 (IN), filed on Aug. 31, 2022.
Prior Publication US 2024/0073594 A1, Feb. 29, 2024
Int. Cl. H04R 1/32 (2006.01); G08B 17/00 (2006.01); H04N 7/18 (2006.01); H04N 23/61 (2023.01); H04N 23/67 (2023.01); H04N 23/69 (2023.01); H04R 3/00 (2006.01)
CPC H04R 1/326 (2013.01) [H04N 23/61 (2023.01); H04N 23/671 (2023.01); G08B 17/00 (2013.01); H04N 7/188 (2013.01); H04N 23/69 (2023.01); H04R 3/005 (2013.01); H04R 2410/01 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A detecting apparatus comprising:
a first microphone configured to detect a combination of a first soundwave and a second soundwave, wherein the first soundwave comprises background noise;
a memory configured to store a first pre-determined sound signature corresponding to the background noise and a second pre-determined sound signature corresponding to a hazard soundwave;
a controller component configured to:
identify a presence of the second soundwave in the detected combination by matching a signature of the combination with the first pre-determined sound signature;
reduce a level of the first soundwave in the detected combination using noise reduction;
produce an extracted second soundwave based on the noise reduction;
determine an extracted sound signature corresponding to the extracted second soundwave;
determine a matching level of the extracted sound signature with the second pre-determined sound signature;
determine a presence of a known hazard based on the matching level determination;
determine a pattern of the extracted second soundwave, wherein the pattern indicates at least one of temporal continuity and amplitude of the extracted second soundwave; and
determine a material medium of the known hazard based on the pattern of the extracted second soundwave.