An assessment system includes a sound data acquiring unit configured to acquire sound data collected by a sound insulation device, the sound insulation device being fitted into a wearer's ears; and an assessment unit configured to assess noise to which the wearer is exposed, based on the sound data acquired by the sound data acquiring unit and time information associated with the sound data.

A system and method for monitoring user sound exposure are disclosed. The system can include receiving audio data generated by an audio source, such as a mobile phone music player, and ambient sound data. Based on this received sound data, the system can determine a cumulative sound exposure for the user, compare the cumulative sound exposure to a threshold, and provide an alert to the user according to the comparison. Based on whether the user adheres to recommended safe listening standards, the system can take additional actions, including providing reports to the user or automatically controlling the volume of the sound that the user is exposed to.

A communication device for hearing protection devices provides communication capabilities to users adorning hearing protection devices, which would ordinarily hinder or block communication. The communication device removably attaches to a cup of a hearing protection device and connects to the speakers thereof. One or more wireless transceivers provide wireless transmission of vocal communication and other sound between users of hearing protection devices enhanced with the communication device. Users remain protected by their hearing protection devices and while communicating freely in high decibel environments.

Occlusion divices, earpiece devices and metods of forming occlusion devices are provided. An occlusion device is configured to occlude an ear canal. The occlusion device includes an insertion element and at least one expandalde element disposed on the insertion element. The expandable element is configured to receive a medium via the insertion element and is configured to expand, responsive to the medium, to contact the ear canal. Physical parameters of the occlusion device are selected to produce a predetermined sound attenuation characteristic over a frequency band, such that sound is attenuated more in a first frequency range of the frequency band than in a second frequency range of the frequency band.

Occlusion devices, earpiece devices and methods of forming occlusion devices are provided. An occlusion device is configured to occlude an ear canal. The occlusion device includes an insertion element and at least one expandable element disposed on the insertion element. The expandable element is configured to receive a medium via the insertion element and is configured to expand, responsive to the medium, to contact the ear canal. Physical parameters of the occlusion device are selected to produce a predetermined sound attenuation characteristic over a frequency band, such that sound is attenuated more in a first frequency range of the frequency band than in a second frequency range of the frequency band.

An audio device for receiving radio communication. The audio device is configured to receive radio communication as a received radio signal. The audio device includes a hear-through element configured to provide a hear-through signal to a user in response to a received ambient sound signal, and an adaptive auto-gain element configured to perform an auto-gain function of the received radio signal according to an adaptive gain value resulting in a modified radio signal, and to set the adaptive target level for the auto-gain function in response to the hear-through signal.

A breathing meditation inducing device combined with headphones capable of measuring EEG, including a main body mounted on the user's face, and a control box electrically coupled to the main body and providing a driving signal to the main body is provided where the main body includes first and second opening and closing means for opening and closing the nostril of the user's nose, first and second driving means for driving the first and second opening and closing means, respectively, and mounting means for mounting the main body on the face In the headphone and breathing meditation inducing device capable of EEG measurement, characterized in that the control box is further provided with a memory card holder for inserting a memory card, the headphone installation part has an inner surface.

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.

An in-ear device includes a tympanic membrane measurement unit (TMMU) and an audio package configured to emit sound. The device is configured to measure a movement of a tympanic membrane in an ear using the TMMU caused by external sound received by the tympanic membrane, analyze at least the movement of the tympanic membrane measured by the TMMU using a predictive model trained by a machine learning technique to generate a waveform of cancellation sound that will destructively interfere with the external sound when received by the tympanic membrane, and output the cancellation sound from the audio package to destructively interfere with external sound received by the tympanic membrane.

The present disclosure discloses a noise-reducing earmuff, comprising: an earmuff shell forming an earmuff cavity; a separator being installed in the earmuff cavity and forming an independent chamber; and a conduit being installed on the separator, the conduit being provided with an opening at each of the two ends thereof; wherein one of the openings being located in the chamber, and the other extending out of the chamber and being located in the earmuff cavity; wherein the chamber and the conduit form a low-frequency resonator whose resonance frequency is equivalent to a corner frequency of a low-pass filter formed by the earmuff.