Apparatuses and methods for improved noise reduction and voice capture in respiratory protective devices

A computer-implemented method comprising:

• receiving, by a controller component of a respiratory protective device, a detected fan speed signal comprising a detected rotation speed indication associated with at least one fan component;
• retrieving, from a data storage component by the controller 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;
• generating, by the controller component, a noise-reduced sound signal based at least in part on the corresponding noise profile data object and a detected sound signal;
• and
• transmitting, by the controller component, the noise-reduced sound signal to a data communication component.

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:
• generate a plurality of noise profile data objects, wherein each of the plurality of noise profile data objects is associated with one of a plurality of rotation speed indications associated with the at least one fan component;
• store the plurality of noise profile data objects in a data storage component;
• receive a detected fan speed signal comprising a detected rotation speed indication associated with the at least one fan component;
• retrieve, from the data storage component, a corresponding noise profile data object from the 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.

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 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, wherein the corresponding noise profile data object comprises a rotation speed indication, one or more threshold sensitivity indications, and one or more frequency band indications;
• 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.