Patent ID: 8606572

Claim:
A noise cancellation device for personal face-to-face and radio communications in a high noise environment, comprising: a speech acquisition module for audio signal collection, comprising: a contact microphone mounted on a rigid outer surface of one of a mask of a wearer and a personal protection equipment of said wearer, said microphone configured for picking up voice vibrations from said rigid outer surface of said mask and said personal protection equipment; and an in-the-ear microphone for picking up signals from cochlear emissions in an ear canal of said wearer; an audio signal processing module for processing said voice vibrations and said signals picked up from said cochlear emissions, using a set of noise reduction algorithms, to remove background noise, air-regulator inhalation noise, low-pressure alarm noise, and personal alert safety system noise; a loudspeaker with a power amplifier; and a radio interface for person-to-radio wireless communication in said high noise environment.