US 12,406,650 B2
Apparatuses and methods for improved noise reduction and voice capture in respiratory protective devices
En Yi Chen, Charlotte, NC (US); Li Cheng, Charlotte, NC (US); and Zhicheng Zou, Charlotte, NC (US)
Filed by HONEYWELL SAFETY PRODUCTS USA, INC., Charlotte, NC (US)
Filed on Nov. 28, 2023, as Appl. No. 18/521,371.
Claims priority of application No. 202211632361.9 (CN), filed on Dec. 19, 2022.
Prior Publication US 2024/0203393 A1, Jun. 20, 2024
Int. Cl. G10K 11/178 (2006.01)
CPC G10K 11/17825 (2018.01) [G10K 11/1785 (2018.01); G10K 2210/109 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A respiratory protective device comprising:
at least one fan component secured to the respiratory protective device;
at least one sound sensor component positioned within the respiratory protective device and generating a detected sound signal; and
a controller component electronically coupled to the at least one fan component, wherein the controller component is configured to:
receive a detected fan speed signal comprising a detected rotation speed indication associated with the at least one fan component;
retrieve, from a data storage component, a corresponding noise profile data object from a plurality of noise profile data objects based at least in part on the detected rotation speed indication;
generate a noise-reduced sound signal based at least in part on the corresponding noise profile data object and the detected sound signal; and
transmit the noise-reduced sound signal to a data communication component.