The present disclosure relates to a personal protective device 100, 100, 300, 400, 500 with local voice recognition comprising a voice receiving unit 20, 20, a voice processing unit 30, 30, a command processing unit 40, 40 and a control unit 42, 42. The present disclosure further relates to a method of processing a voice signal 202, 202 in a personal protective device 100, 100, 300, 400, 500 with local voice recognition comprising the steps of recognizing a voice signal 202, 202 by a microphone 10, 10, transmitting the voice signal 202, 202 to the voice processing unit 30, 30, optionally of an external device 31, processing the received voice signal 202, 202 with the voice processing unit 30, 30 to generate a voice command based on the received voice signal 202, 202, processing the voice command generated from the voice signal 202, 202 and matching it with the command information stored within the voice processing unit 30, 30 to generate a voice command information block, transmitting the voice command information block to the command processing unit 40, 40, processing the voice command information block and matching it with the control information stored within the command processing unit 40, 40 to generate a control command and transmitting the control command to the control unit 42, 42.

An in-ear noise dosimeter in the form of an earplug which senses sound in the ear canal using an eartip which has a sound delivery channel that couples sound at the end closest to the eardrum to an earplug microphone. The earplug can communicate wirelessly with a remote data collection and processing system. A dock unit for storing the earplugs when not worn can compensate for differences in unoccluded-ear versus occluded-ear responses by an acoustic compensator. An electronic compensation filter can be modified by a proximity switch in the earplug which changes state when the earplug is worn in the ear versus stored in a dock unit. The dosimeter can also have a temperature sensor for sensing human body temperature and remotely-located wireless LEDs used to alert the user of high noise dosage. Data can also be downloaded from the earplug using a reader unit.

The present disclosure provides a hearing protection system and a method for estimating a voice signal of a hearing protection system user. The hearing protection system comprises an ear canal microphone for provision of an ear canal input signal; a receiver for provision of an audio output signal; a compensation module for receiving and filtering the ear canal output signal for provision of a compensation signal; and a mixer connected to the ear canal microphone and the compensation module for provision of a voice signal, wherein the compensation module comprises a filter controller, a primary filter and a secondary filter, wherein the primary filter is a static filter, wherein primary filter coefficients of the primary filter are static, and wherein the secondary filter is an adaptive filter, wherein secondary filter coefficients of the secondary filter are controlled by the filter controller based on the voice signal.

The present invention provides devices and system useful for transporting infants, minimizing vibrations, noise, and associated with transport. Devices of the invention include a head gear assembly, one or more body support rolls for elevating portions of the infants body, and a mattress system with a removable insert. The invention further provides methods of use associated with such devices, including methods of stabilizing a position of an infant, reducing shock or vibration to an infant during transportation, reducing shock, vibration, or noise exposure to an infant during transportation, reducing shock or vibration while providing elevation to specific portions of an infant during transportation, and reducing the risk of intraventricular hemorrhage and/or persistent pulmonary hypertension to an infant during transportation.

An audio system has an ambient sound enhancement function, in which an against-the-ear audio device having a speaker converts a digitally processed version of an input audio signal into sound. The audio system also has an acoustic noise cancellation (ANC) function that may be combined in various ways with the sound enhancement function, and that may be responsive to voice activity detection. Other aspects are also described and claimed.

A system (2000) comprising a head-mounted device (2010); at least one position sensor coupled to the head-mounted device; at least one light-filtering shield (2012) coupled to the at least one position sensor; at least one light detector (2019); and at least one computing device (2017) configured to receive, from the light detector, an indication that an intensity of light detected by the light detector exceeds an exposure threshold; determine, from the at least one position sensor, that the light-filtering shield is not positioned at the face of a worker to filter light with the intensity that exceeds the exposure threshold; and generate, in response to the determination that the light-filtering shield is not positioned at the face of a worker wearing the head-mounted device to filter light with the intensity that exceeds the exposure threshold, an indication for output.

An earphone with a first acoustic cavity, an electro-acoustic transducer configured to deliver acoustic energy into the first acoustic cavity, and a port that acoustically couples the first acoustic cavity to a different volume, wherein the port comprises a series of through-holes that are open to the first acoustic cavity and the different volume.

A method for measuring glucose and cortisol levels in earwax, wherein the measured levels of cortisol and glucose are interpreted as the average cortisol and glucose levels and a medical device that provides an effective, safe and hygienic self-extraction of earwax.

A cover apparatus adapted to cover at least a portion of an ear for protection from the elements, artificial heat sources, and the like, is provided. Such a cover is produced in uniform structure such that any properly sized implement may be affixed to either a left or right ear. Additionally, the manner of affixing is provided through the provision of the ear cover exhibiting sufficient elasticity for pressure fitting around a subject ear auricle and lobe simultaneously, with lower levels of elasticity exhibited by the middle portion thereof extending between the top and bottom portions. Such a cover thus compresses for proper fitting around the auricle and lobe and does not provide excess pressure in the middle portion, thereby allowing for greater comfort and control to the wearer and leaves a least part of the wearer's ear canal exposed and uncovered to facilitate hearing while affixed.

An improved system and method for recognizing an audio signal due to physical activity and taking a predetermined action in response is disclosed. A reverse noise signal created by the sound pressure wave of the physical activity acting on the earpiece transducer is obtained. In some embodiments, an ambient noise signal is inverted and fed back, and the inverted signal is added to the intended audio signal being sent to the earpiece so that the ambient noise is cancelled. In other embodiments, a processor receives the ambient noise signal and predicts the modification to the intended audio signal needed to counteract the ambient noise. In other embodiments, the reverse noise signal may represent a motor or biological activity of a user; the system may take different actions in response to different physical activities, such as a heart beat of the user, or a tap, footfall, or swallowing by the user.