40 results about "Noise exposure" patented technology

A method for continuously monitoring noise exposure level of a person via measuring sound level within an ear canal of the person using a sound measurement means linked to a sound level recording device external to the ear canal, wherein the sound measurement means may be shielded from the environment by a hearing protective device, and wherein the cable does not interfere with the ability of the hearing protective device to reduce noise exposure level in the ear canal. Also provided are a system comprising a sound measurement means mounted within an ear canal of the person, an external sound level recording means and a linking cable. Further provided is a system for providing continuous noise exposure monitoring level of a person, and for providing radio communication in a noisy environment, said system comprising the above sound monitoring system linked to a radio signal transmission means, and is switchable between said sound level recording means in a recording mode and said radio signal transmission means in a communication mode.

Systems and methods for measuring noise exposure associated with use of a wireless headset are presented. In one example, a transition from a wireless headset standby mode operation to a wireless headset active mode operation is identified. A stored noise dose measurement at the wireless headset is recalled, and a current noise dose measurement is calculated at the wireless headset for a duration of the active mode operation. A transition from the wireless headset active mode operation to the wireless headset standby mode operation is identified, and an updated noise dose measurement is recorded at the wireless headset.

An apparatus and method for image pickup capable of reducing noise in the images to reduce the effect of shaking due to, for example, hand movement. The image pickup apparatus and method can employ an exposure photographing unit for photographing at least one exposure image at predetermined time intervals using time-division exposure in a light exposure state, a dark frame photographing unit for photographing at least one dark frame at predetermined time intervals using time-division exposure in a dark state, a subtracting processor for subtracting the dark frames from the exposure images to reduce noise in the exposure images, and an image combiner for combining the plurality of reduced noise exposure images.

A noise monitoring device for indicating exposure to noise and providing a quickly perceived noise exposure warning. Noise levels are monitored, recorded and evaluated by the device utilizing a noise detector, an accumulator, and an evaluator that monitors an accumulated noise signal value and determines a probability that continued exposure to the noise will exceed an acceptable value and issues a noise exposure warning if that probability exceeds a predetermined value. The noise exposure warning comprises a quickly perceived indicator such as a readily perceived visual symbol or tactile warning.

An apparatus is disclosed for managing the joint contribution of noise exposure of the ear of a user of the apparatus from a loudspeaker of the apparatus as well as from ambient noise so that the risk of risk of noise induced hearing losses is reduced. By assessing the joint actual sound energy delivered to the ear and feeding said assessment to a model describing the accumulated risk of hearing loss due to said sound energy accumulated over a time period, an estimate of the current risk of hearing loss is obtained. When said risk estimate passes a predetermined threshold, one or more protective measures are taken.

The invention provides a composition. The composition comprises polyethylene and hollow micro beads. The hollow micro beads have particle sizes of 0.1 to 400 micrometers, true densities of 0.4 to 2.5g / cm<3> and stacking densities of 0.26 to 1.2g / cm<3>. The soft damping sound insulation noise reduction material with high tensile strength and high breaking elongation, which is obtained from the composition disclosed by the invention, has a simple technical process. The obtained product has breaking strength of over 3,402kPa, elongation of over 485 percent, hardness of over 78 Shore A and 250Hz noise exposure of below 30 decibels. The composition also meets the environmental-friendly technical indexes.

The present disclosure generally relates to user interfaces and techniques for monitoring noise exposure levels using an electronic device. In accordance with some embodiments, the electronic device displays a graphical indication of a noise exposure level over a first period of time with an area of the graphical indication that is colored to represent the noise exposure level, the color of the area transitioning from a first color to a second color when the noise exposure level exceeds a first threshold. In accordance with some embodiments, the electronic device displays noise exposure levels attributable to a first output device type and a second output device type and, in response to selecting a filtering affordance, visually distinguishes a set of noise exposure levels attributable to the second output device type.

A method and apparatus for objectively assessing acoustical performance of an in-ear device having a passageway extending there through use a dual microphone probe that removably engages the passageway. The acoustical performance of the in-ear device is performed with the in-ear device inserted into the ear canal of the user and a reference sound source. A clip holding the probe in an acoustic near field of the sound source permits real time calibration thereof. The method and apparatus allow on-site and in-situ measurement of a predicted personal attenuation rating of the device, a subject-fit re-insertion test, an acoustic seal test, a rating test, a stability and reliability test, as well as a protection test of the device with an assessment of a filtered predicted exposure level at the ear for a specific noise exposure level. The apparatus may be simply housed along with the sound source for in-field evaluation tests.

An apparatus and method for image pickup capable of reducing noise in the images to reduce the effect of shaking due to, for example, hand movement. The image pickup apparatus and method can employ an exposure photographing unit for photographing at least one exposure image at predetermined time intervals using time-division exposure in a light exposure state, a dark frame photographing unit for photographing at least one dark frame at predetermined time intervals using time-division exposure in a dark state, a subtracting processor for subtracting the dark frames from the exposure images to reduce noise in the exposure images, and an image combiner for combining the plurality of reduced noise exposure images.

The invention discloses a sound and shock insulating composition for automobile interior decoration industry. The composition comprises polyethylene and modified hollow beads, wherein polyethylene is selected from high density polyethylene, low density polyethylene, ultra high molecular weight polyethylene and linear low density polyethylene; the grain size of the hollow beads is 0.1-400 microns, the true density is 0.4-2.5g / cm<3> and the bulk density is 0.26-1.2g / cm<3>. The finished product obtained by the invention has the characteristics of being high in tensile strength, high in elongation at break, flexible, damping, sound insulating and noise reducing, and is simple in technical process. The breaking strength of the obtained product is over 3402kpa, the elongation at break is over 485%, the hardness is over 78 shore hardness A and the noise exposure at 250hz is below 30 decibel. The composition simultaneously meets environmental technical indexes.

The invention relates to a noise stimulation box, which has a main function of providing a noise giving environment for experimental animals during noise stimulation. The noise stimulation box is implemented by a lightweight sound insulation component and a double-layer composite sound insulation structure in order to improve the sound insulation performance and meet the special requirements of the noise simulation box on ventilation, fireproofness, moisture proofness, corrosion resistance and the like. The noise stimulation box disclosed by the invention furthest ensures the strength stability and the minimum attenuation after a noise signal of a signal generator is output, furthest meets the requirements on normalization of noise stimulation models and provides an effective environment foundation for establishment of the noise-induced deaf animal models. The noise stimulation box relates to the field of scientific research of the experimental animals, sound wave barrier sound-absorbing materials, physical ventilation and the like and is suitable for establishment of various noise-induced hearing loss animal models and sound stimulation models as well as behavior surveillance of the experimental animals under the noise exposure.

A hearing protection device to be worn at either a primary position or a secondary position, comprising a hearing protection component and a noise measurement component, and an attachment mechanism to securely attach the noise measurement component to the hearing protection component, wherein at the primary position the noise measurement component detects a protected noise exposure and at the secondary position it detects an unprotected exposure, the noise measurement component comprises a microphone, a compartment that encloses the microphone and at least one filter, and the filter reduces resonance of said compartment incident upon said microphone.

The invention relates to a wearable individual noise exposure evaluation and early-warning system which comprises a noise data acquisition early-warning front-end module and an operation environment noise feature analysis and evaluation module. The noise data acquisition early-warning front-end module can be arranged to be worn on an operator in a shoulder-seal mode; and the operation environmentnoise feature analysis and evaluation module is integrated on a tablet computer and is in data connection with the noise data acquisition early-warning front-end module through bluetooth. The wearableindividual noise exposure evaluation and early-warning system has the technical effects of being convenient to wear, high in invisibility, high in environmental adaptability, independent in operation, reliable and durable.

A Risk Assessment Company (RAC) maintains an up to date Risk Profile Data Base (RPDB) on its members based on their normal periodic updates to the RPDB. The Risk Assessment Company, therefore, can provide risk assessment results which can be utilized by a plurality of insurance carriers to determine an appropriate underwriting class for individual user subscribers who apply for insurance. The Risk Assessment Company can also provide a member with a risk assessment result report containing suggestions on how said person can better manage his or her risk exposure.

There is provided a method for determining a noise exposure level associated as the cause of an observed evolution of hearing acuity of an individual of known gender. The method comprises the following steps: 1) providing a first audiogram of the individual measured at age X and a second audiogram of the individual measured at age Y; 2) inputting the individual's gender, age X, and a time period equal to Y−X in a statistical hearing threshold levels evolution prediction formula; 3) calculating projected hearing loss audiograms specific to each of a plurality of possible noise level exposure values, using the prediction formula; 4) comparing a pattern of each calculated projected audiogram with a pattern the second audiogram; 5) selecting the projected audiogram that best fits the second audiogram; and 6) assuming that the noise exposure level value associated with the selected projected audiogram is the noise exposure value that caused the evolution of hearing acuity observed between the first and the second audiograms. There is also provided systems for performing the method and methods for providing services to clients or enabling users regarding determination of real ear noise exposure values.

A hearing protection device to be worn at either a primary position or a secondary position, comprising a hearing protection component and a noise measurement component, and an attachment mechanism to securely attach the noise measurement component to the hearing protection component, wherein at the primary position the noise measurement component detects a protected noise exposure and at the secondary position it detects an unprotected exposure, the noise measurement component comprises a microphone, a compartment that encloses the microphone and at least one filter, and the filter reduces resonance of said compartment incident upon said microphone.

The invention provides an application of sodium butyrate for preventing noise-induced hearing loss, and belongs to the technical field of biological medicine. According to the application of sodium butyrate for preventing noise-induced hearing loss, in the noise-induced hearing loss experiment of mice models, sodium butyrate can reduce the auditory brainstem response threshold shift after noise exposure, increase the survival rate of cochlear hair cells after noise exposure, has excellent noise-induced hearing loss preventing effect on noises at multiple frequencies, especially has excellent preventative effect on noise-induced hearing loss, explosive hearing loss and other diseases, can be used for preparing drugs and / or healthcare products for preventing noise-induced hearing loss, has good research and application prospects, and can fill in the gap of drugs for preventing noise-induced hearing loss at present.

The invention discloses an axial-flow fan blade with high noise elimination degree. The axial-flow fan blade comprises a hub and a blade arranged on the side part of the hub, wherein the middle part of the tail edge of the blade is equipped with a V-shaped groove which extends towards the central area of the blade; length of the side line of the tail edge is L; a starting point, on the tail edge, of the V-shaped groove is positioned at the 0.55-0.64L length part of the side line of the tail edge; a terminal point, on the tail edge, of the V-shaped groove is positioned at the 0.7-0.78L length part of the side line of the tail edge; depth of the V-shaped groove is 0.4-0.65L; a plurality of micro noise elimination holes are densely formed in blades at the two sides of the V-shaped groove; and hole diameter of the micro noise elimination holes is 0.4-0.7 mm. The V-shaped groove is formed in the middle part of the tail edge of the blade, the starting point, on the tail edge of the blade, of the V-shaped groove and groove depth are selected, and the dense micro noise elimination holes are additionally formed, so that airflow can be guided to quickly circulate to weaken airflow turbulence on the tail edge of the blade, and therefore, noise degree is reduced, and noise exposure is reduced in case of ensuring air output loss of the blade to be not great.

The invention discloses a noise exposure index statistical method and device, equipment and a storage medium, and the method comprises the steps: obtaining the number of online equipment; acquiring noise signals acquired by microphones of different online devices, and acquiring exposure durations of the noise signals; performing data processing on the noise signal and the exposure duration to obtain a noise exposure value corresponding to the online equipment; and averaging the noise exposure value according to the number of devices, and outputting the noise exposure index. According to the invention, the noise exposure condition is specified through the noise exposure index, a user can know the noise exposure condition of the current environment only by carrying a device equipped with a microphone, and corresponding protection measures can be taken according to the noise exposure index, so that the user experience is improved.

The present disclosure generally relates to user interfaces and techniques for managing audio exposure using a computer system (e.g., an electronic device). In accordance with some embodiments, the electronic device displays a graphical indication of a noise exposure level over a first period of time with an area of the graphical indication that is colored to represent the noise exposure level, the color of the area transitioning from a first color to a second color when the noise exposure level exceeds a first threshold. In accordance with some embodiments, the electronic device displays noise exposure levels attributable to a first output device type and a second output device type and, in response to selecting a filtering affordance, visually distinguishes a set of noise exposure levels attributable to the second output device type.

A device includes a gas-measuring unit and a sound-measuring unit. The gas-measuring unit has a gas sensor detecting a first measured variable, and a gas analysis module determining a gas concentration from the first variable and comparing the concentration with a first threshold value, to output a first signal based thereon. The sound-measuring unit has a sound detection unit detecting a second measured variable, and a sound analysis module determining a status variable, from the second variable, indicating a noise exposure, and comparing the status variable with a second threshold value to determine a first parameter indicating a current sound level and / or determining a second parameter indicating a sound exposure accumulated over a time interval. The sound analysis module may determine the status variable, the first parameter and / or the second parameter as a function of the comparison of the gas concentration and the first threshold value.

The invention relates to application of melbine in preparing an NIHL (Noise Induced Hearing Loss) prevention product. A pharmacological experiment of a prevention function of the melbine on noise exposure mouse hearing loss shows that the melbine is capable of remarkably preventing and therapeutically protecting hearing loss caused by noise exposure and shows that the melbine has a function of preventing the NIHL. According to the application disclosed by the invention, experimental research on the melbine verifies new application of the melbine in preventing the NIHL.

The invention discloses an application of Riviciclib hydrochloride (p276-00) in preparation of a medicine for preventing and treating noise induced hearing loss, relates to the field of medicines, and aims to solve the problem that existing medicines for preventing and treating noise induced hearing loss are rare. According to the invention, with the application of the noise induced hearing loss animal model experiment method, the hearing, the internal hair cell function and the like of the mouse after the noise exposure are detected, it is found that the Riviciclib hydrochloride (p276-00) has the good protection effect on the number and the function of the internal hair cell synapses during the noise exposure, the prevention and treatment effect of the Riviciclib hydrochloride (p276-00) on the noise induced hearing loss is directly verified, and the Riviciclib hydrochloride (p276-00) can be used for preparing the medicines for preventing and treating the noise induced hearing loss and has good research and application prospects.

An audiometric test method is provided where a noise stress test is applied to a subject, during the application of the noise stress test measuring one or more indicators reflecting a subjects purinergic hearing adaptation to noise exposure. The measured indicators are analysed to quantify degree of change and rate of change of the subjects purinergic hearing adaptation to noise exposure. An audiometric test system and audiometer configured to perform the test is also provided.

The invention discloses the application of Riviciclib hydrochloride (p276-00) in the preparation of medicines for preventing and treating noise-induced hearing loss, relates to the field of medicine, and is used to solve the problem of scarcity of existing medicines for preventing and treating noise-induced hearing loss. By using the animal model experiment method of noise-induced hearing loss to detect the hearing and inner hair cell function of mice after noise exposure, it was found that Riviciclib hydrochloride (p276‑00) has a good effect on the number and function of inner hair cell synapses when noise is exposed. The protective effect of Riviciclib hydrochloride (p276‑00) has been visually verified to prevent and treat noise-induced hearing loss. It can be used to prepare drugs for preventing and treating noise-induced hearing loss, and has good research and application prospects.

The invention relates to a normalized noise exposure level determination method and device, and the method comprises the steps: carrying out the correction of a noise exposure amount through analyzing the statistical characteristics of a noise signal, thereby obtaining a corrected noise exposure level, and carrying out the measurement of the normalized noise exposure level. The corrected noise exposure level is used as the normalized noise exposure level to predict the hearing loss, so that the prediction accuracy of the hearing loss caused by complex noise can be effectively improved. According to the method, the waveform fluctuation index is specifically adopted to distinguish the noise with the pulse component and the steady-state noise, on one hand, under the same noise exposure level, the waveform fluctuation index can distinguish the hearing impairment degree caused by the noise of different time domain structures; on the other hand, the NIHL (Noise Hearing Loss) can be accurately evaluated by using waveform fluctuation index adjustment to correct the noise level.

The invention relates to a conjugate capable of penetrating a blood-labyrinth barrier and a preparation method thereof. The conjugate is formed by coupling a peptide and an active molecule with inner ear diagnosis or treatment activity, and the peptide has the following structural general formula: TFYGGRX1KRNNFX2X3X4X5X6X7. The conjugate can be administrated through intravenous drip, can carry active molecules to enter the inner ear noninvasively, and breaks through the technical bottleneck that in the prior art, drugs are difficult to enter the inner ear. The invention further specifically provides a peptide-curcumin compound, the inner ear targeting function of the peptide-curcumin compound is verified on the animal experiment level, the peptide-curcumin compound can effectively cross the mouse inner ear labyrinth barrier, nerve deafness is treated, and the auditory protection effect after noise exposure is achieved.

A device includes a gas-measuring unit and a sound-measuring unit. The gas-measuring unit has a gas sensor detecting a first measured variable, and a gas analysis module determining a gas concentration from the first variable and comparing the concentration with a first threshold value, to output a first signal based thereon. The sound-measuring unit has a sound detection unit detecting a second measured variable, and a sound analysis module determining a status variable, from the second variable, indicating a noise exposure, and comparing the status variable with a second threshold value to determine a first parameter indicating a current sound level and / or determining a second parameter indicating a sound exposure accumulated over a time interval. The sound analysis module may determine the status variable, the first parameter and / or the second parameter as a function of the comparison of the gas concentration and the first threshold value.

The invention provides an application of sodium butyrate for preventing noise-induced hearing loss, and belongs to the technical field of biological medicine. According to the application of sodium butyrate for preventing noise-induced hearing loss, in the noise-induced hearing loss experiment of mice models, sodium butyrate can reduce the auditory brainstem response threshold shift after noise exposure, increase the survival rate of cochlear hair cells after noise exposure, has excellent noise-induced hearing loss preventing effect on noises at multiple frequencies, especially has excellent preventative effect on noise-induced hearing loss, explosive hearing loss and other diseases, can be used for preparing drugs and / or healthcare products for preventing noise-induced hearing loss, has good research and application prospects, and can fill in the gap of drugs for preventing noise-induced hearing loss at present.