A hearing protection system, a hearing protection device and related method, the hearing protection device comprising an earpiece device comprising a first connector, and first and second earpieces, the first earpiece comprising a first primary microphone and a first receiver wired to the first connector and the second earpiece comprising a second primary microphone and a second receiver wired to the first connector; and a processing device comprising a processor, an earpiece interface, and a wireless communication interface, wherein the processor is configured to receive a first microphone input signal from the first primary microphone; process the first microphone input signal for provision of a first primary output signal for the first receiver based on the first microphone input signal; receive a communication request from a communication device via the communication interface; and in response to receipt of the communication request, communicate with the communication device via the communication interface.

A hearing protection system, a hearing protection device and related method, the hearing protection device comprising an earpiece device comprising a first connector, and first and second earpieces, the first earpiece comprising a first primary microphone and a first receiver wired to the first connector and the second earpiece comprising a second primary microphone and a second receiver wired to the first connector; and a processing device comprising a processor, an earpiece interface, and a wireless communication interface, wherein the processor is configured to receive a first microphone input signal from the first primary microphone; process the first microphone input signal for provision of a first primary output signal for the first receiver based on the first microphone input signal; receive a communication request from a communication device via the communication interface; and in response to receipt of the communication request, communicate with the communication device via the communication interface.

The present invention is directed to earmuffs, and is intended to allow for hot packs to be used, thereby improving the effect of protecting ear regions from cold and a cold wave in the winter season. In order to achieve this, the present invention provides earmuffs (10) including a pair of ear covers (11) and a band (12) configured to connect the ear covers (11), wherein reception slots (13) through which hot packs (20) configured to generate heat are inserted and stored are formed in the ear covers (11), respectively.

A fan noise cancellation device comprises a base with a resonant ring formed with a plurality of resonance channels and a cover coupled to the base. Each resonance channel comprises an inner channel and an outer channel. Each inner channel has an opening to the resonant ring and has a length corresponding to a frequency. A baffle positioned in each inner channel determines an effective length of the inner channel. The inner channel baffles are coupled to the cover, wherein rotation of the cover relative to the resonance ring changes the position of the inner channel baffles to change the effective lengths of the inner channels to adjust the fan noise cancellation waveform frequency. Vanes on the cover are positioned in an airflow such that the airflow rotates the cover, and a spring in each resonance channel counteracts the rotation to adjust the inner channels.

The present application discloses an ear-cover structure and an ear irrigation device. The ear-cover structure includes a cover configured with a containing space with an opening configured at a side of the containing space, a liquid collecting portion extending outwards from the bottom of the cover, and an injection port configured on the cover and communicating with the containing space. The medium collected in the containing space flows through the liquid collecting portion and is discharged from a leakage port to the external environment.

Hearing protection and communication apparatus using vibration sensors are disclosed. An example wearable electronic device includes means for transducing vibrations associated with speech into a first signal; means for transducing sound associated with ambient noise into a second signal; and means for processing to cause a speaker to output a signal to reduce the ambient noise; detect an identifier in the speech; and cause audio data representative of the speech to be transmitted to a second device associated with the identifier.

Hearing protection and communication apparatus using vibration sensors are disclosed. An example wearable electronic device includes means for transducing vibrations associated with speech into a first signal; means for transducing sound associated with ambient noise into a second signal; and means for processing to cause a speaker to output a signal to reduce the ambient noise; detect an identifier in the speech; and cause audio data representative of the speech to be transmitted to a second device associated with the identifier.

In some examples, a system includes an article of personal protective equipment (PPE) comprising one or more sensors, the one or more sensors configured to generate usage data that is indicative of an operation of the article of PPE; and at least one computing device comprising a memory and one or more computer processors that: receive the usage data that is indicative of the operation of the article of PPE; apply the usage data to a safety learning model that predicts a likelihood of an occurrence of a safety event associated with the article of PPE based at least in part on previously generated usage data that corresponds to the safety event; and perform, based at least in part on predicting the likelihood of the occurrence of the safety event, at least one operation.

A noise cancellation headphone comprises a speaker, a front plate for carrying the speaker, a microphone arranged on or in the front plate, and a front vent opening arranged within the front plate and in close proximity to the microphone. The microphone is usable as a feedback microphone for active noise cancellation.

Systems and methods for enhanced hearing protection and data recording are disclosed. Recorded data is analyzed to determine user compliance with standard operating procedures. Additionally, hearing loss is monitored using neurological response of the auditory system to environmental noise. Optional sensors such as temperature sensors, accelerometers, GPS sensors are used to correlate noise data with external events. An optional acoustic source may be used to identify unusual conditions such as ear drum perforations and capture information related to health of the tympanic membrane and external auditory meatus. The systems and methods may also be used to protect the hearing and utility of military working dogs.