39 results about "EAR NOISES" patented technology

The present invention provides a noise barrier apparatus for inhibiting external noise from causing the presence of noise in an audio chamber defined by a noise barrier device and including the user's ear canal. The noise barrier apparatus may be constituted by an in-ear noise barrier device or devices or an over-the-ear device or devices. An in-ear application of the present invention provides an in-ear-canal audio receiver comprising an in-ear-canal adapter body having a tapered ear plug portion that is inserted into the user's ear canal. The adapter body further has an opening in the plug portion, an exterior annular indent, and an inner chamber coupled to the opening of the plug portion. The inner chamber of the in-ear-canal adapter body holds a transducer assembly comprising a transducer housing and a transducer or speaker. The transducer is positioned in a passage extending through the transducer housing. A torus-shaped cushion is positioned in the annular indent of the in-ear-canal adapter body. The cushion provides comfort and establishes a good seal with the user's ear, and also provides mechanical damping to inhibit propagation of external acoustic pressure waves via the noise barrier device to an audio chamber including an interior of the noise barrier device and the user's ear canal. An over-the-ear application of the present invention provides an ear cup and has a torus-shaped cushion at an interface part thereof which bears against the side of the user's head at an area surrounding the user's ear. The cushion again provides comfort, establishes a good seal with the user's head and provides mechanical damping to inhibit propagation of external acoustic pressure waves via the noise barrier device to an audio chamber including an interior of the noise barrier device and the user's ear canal. The cushion is preferably formed of a material which is at least partially plastically deformable and provides a damping ratio greater than 0.75.

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.

A method and a device are provided for enhancing microphone signals transmitted from an earpiece of a headset. The method comprises: receiving a first signal and a second signal from an in-ear microphone and an outside microphone, respectively. The in-ear microphone is positioned at a proximal side of the earpiece with respect to an ear canal of a user, and the outside microphone is positioned ata distal side of the earpiece with respect to the ear canal. The method further comprises: digitally filtering out in-ear noise from the first signal using the second signal as a reference to therebyproduce a de-noised signal. The method and the device for enhancing microphone signals transmitted from an earpiece of a headset have the advantage that the sound quality of the microphone signals transmitted from an in-ear microphone can be significantly enhanced.

The invention discloses a hearing test device, comprising a headset and a stimulating sound source; the headset is used for receiving stimulating sound wave emitted by the stimulating sound source. The hearing test device also comprises a data processor and an evaluation module connected with the data processor; a speaker and an otoacoustic sensor embedded in the headset, the speaker is connected with the stimulating sound source, the otoacoustic sensor is used for picking an otoacoustic signal generated in the cochlea of a subject and transmitting the otoacoustic signal to the data processor for signal processing, and the evaluating module evaluates hearing condition of the subject and sends out hearing test results. The hearing test device can provide hearing test for the subject when the subject enjoys music or converses; the otoacoustic sensor in the headset may receive the otoacoustic emission signal from the cochlea; the data processor and the evaluation module evaluate hearing of the subject; evaluation is not limited by ambient and stimulating sound source frequency; hearing hest can be performed anytime and anywhere.

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 noise-reduction horn comprises a horn unit and a microphone, the noise-reduction horn further comprises a horn protecting cover, the horn protecting cover is disposed on a sound outlet of a basic rack of the horn unit, the microphone is disposed on the horn protecting cover, and the horn protecting cover is further provided with a plurality of sound out-going holes. The microphone is disposed on the horn protecting cover, the volume of a magnet in the horn unit can be made to be very small, and a nonporous sheet-shaped magnet can also be used, so the diameter of the noise-reduction horn can be less than 15mm and even can reach 6mm; the design structure can be applied to products of a headset, even an in-ear noise-reduction earphone which is a smaller mechanism, and the like; a sound made by a vibrating diaphragm can be acquired and analyzed by the microphone at the first time, and the analysis and offset can be rapidly and fully performed on environment noises; and the noise-reduction horn has the advantages of simple structure, the good noise-reduction effect, large-scale mass production, the distortionless generated sound and the like, and the noise-reduction horn is suitable for being made with a large dimension or a small dimension.

The invention provides a filter parameter configuration method of a noise reduction earphone and an active noise reduction earphone. The method comprises the steps that a configuration instruction is received, and the configuration instruction is used for indicating the noise reduction earphone to start noise reduction configuration; according to the configuration instruction, the noise reduction amount of the noise reduction earphone is calculated in real time, and the noise reduction amount is the ratio of the audio signals collected by the extraaural microphone to the audio signals collected by the intra-aural microphone; filter parameters of the filter assembly are correspondingly searched according to a set step length in a set parameter range based on the noise reduction amount obtained in real time, and the corresponding filter parameter when the noise reduction amount is maximum is determined as a current configuration parameter of the filter assembly, wherein the filter parameters of the filter assembly are searched, the searching direction of the parameters is consistent with the noise reduction amount increasing direction; and according to the invention, the current configuration parameters are used to configure the filter assembly to perform noise reduction, so that the search efficiency is improved, the in-ear noise is relatively stable and is not sometimes large or small, and the user experience in the filter parameter configuration process is enhanced.

The invention provides an active noise reduction method and device of an earphone and a half-in-ear active noise reduction earphone. The active noise reduction method of the earphone comprises the steps that a first sound signal vector collected by a microphone array arranged on the earphone is acquired; the microphone array comprises at least one reference microphone used for collecting environment noise signals and at least one error microphone used for collecting in-ear noise signals. The method includes steps of: determining a current noise reduction parameter according to the first sound signal vector; and determining a noise reduction signal according to the current noise reduction parameter and the environmental noise signal. According to the technical scheme provided by the embodiment of the invention, the noise reduction effect of the earphone can be improved, and the earphone has excellent wearing experience and noise reduction performance.

The invention discloses a bone conduction earphone equalization method based on stimulation frequency otoacoustic emission. The method specifically comprises the following steps: measuring a stimulation frequency otoacoustic emission signal, removing an evoked sound artifact by using a double-evoked technology, and respectively calculating an gas conduction otoacoustic emission transfer function between a gas conduction evoked sound and the otoacoustic emission signal and a bone conduction otoacoustic emission transfer function between a bone conduction evoked sound and the otoacoustic emission signal; calculating to obtain a gas-bone conduction difference transfer function according to the gas conduction otoacoustic emission transfer function and the bone conduction otoacoustic emission transfer function; calculating to obtain a bone conduction earphone equalization function according to the gas-bone conduction difference transfer function; and performing equalization processing on abone conduction earphone according to the bone conduction earphone equalization function. Bone conduction earphone equalization does not depend on subjective audiometry and long-term debugging any more, and the effect of the equalized bone conduction earphone can be close to a target as long as an objective reference quantity and an objective transfer function are provided.

The invention discloses a waterproof heat dissipation device, which adopts a split structure, and is characterized in that an air supply device arranged at an operation end generates centrifugal heatdissipation airflow, the centrifugal heat dissipation airflow enters a wearing accommodating cavity through an air inlet line, active convection heat exchange is realized on heat generated by a wearing end heat dissipation element arranged in the wearing accommodating cavity, the airflow passes through an air outlet line and dissipates the heat through the operation end, and therefore, the effectof efficient heat dissipation in a completely closed state is achieved, and the heat dissipation efficiency is greatly improved. Meanwhile, as the air supply device is not arranged at the wearing end,near-ear noise cannot be generated, and noise pollution caused by arranging a fan at a heat source position is avoided; and the wearing accommodating cavity, the control accommodating cavity, the airinlet line and the air outlet line jointly form a completely closed airflow channel, so that a relatively high waterproof grade can be realized while a heat dissipation effect is achieved. The invention further discloses the waterproof and heat dissipation intelligent glasses, the problem of heat dissipation of small-size intelligent wearable equipment is effectively solved, and meanwhile, noiseof the fan and a poor waterproof effect cannot be generated.

The invention relates to an audiometry device and the related field of use thereof, and specifically relates to an in-ear noise dosage device and a method for evaluating noise level according to operating posts. The in-ear noise dosage device comprises an in-ear noise dosimeter, special data transmission equipment and a computer. The in-ear noise dosimeter is connected with the computer through the special data transmission equipment. The in-ear noise dosimeter comprises a machine shell fitting the shape of an external auditory canal of a human body. A miniature microphone, an ultra-miniaturedigital signal processor, a battery and a communication interface are arranged in the machine shell. The device can be placed in the auditory meatus after being miniaturized, so that the device has the advantages that the noise collection points are more reasonable, the obtained noise exposure level value is more valuable, and the noise level of a post can be reflected more accurately compared with a measurement result of one or more fixed points.

The invention provides a baby distortion otoacoustic detection instrument. The baby distortion otoacoustic detection instrument is characterized in that electroacoustic transducers and an acoustoelectric transducer for receiving sound are arranged in a probe housing, an earphone silica gel sleeve placed in an ear is connected with the housing through a sound transmitting and receiving pipeline, and a pure sound stimulating sound system is arranged in the housing.A detection method comprises the steps that a probe transmits stimulation sound, the pure sound stimulating sound system broadcasts two paths of stimulation sound, imitating software is used for storing basic stimulation data which is generated in a header file of ear sound detection engineering, reflection sound is received, noiselevel is calculated, wave character value of a temporary domain interval in a tendency chart is calaculated, and the quality of collected signals is determined. The noise influence in the baby distortion otoacoustic detection process can be improved, the baby detection accuracy is improved, and besides, the detection duration is shortened.

A recognition apparatus 100 for ear acoustic recognition include a feature normalizer 101 which reads input ear acoustic data and removes the earphone's resonance effect from the input ear acoustic data to produce a normalized data at the output, a feature extractor 102 which extracts acoustic features from the normalized data, a classifier 103 which reads the acoustic features as input and classifies them into their corresponding class.

The invention discloses a wearable noise elimination and reduction earplug based on impedance composite noise elimination. The wearable noise elimination and reduction earplug comprises an extra-ear noise reduction unit and an intra-ear noise reduction unit; the extra-ear noise reduction unit comprises a first noise elimination channel, a perforated plate resonance sound absorption unit arranged on the first noise elimination channel and a hedging type second noise elimination channel. The perforated plate resonance sound absorption unit comprises a micro-pore plate arranged at the airflow inlet end of the first silencing channel and a micro-pore sleeve arranged in the first silencing channel and connected with the micro-pore plate, and throttling and pressure reduction are achieved by forming cavity resonance; a flexible porous sound-absorbing material is arranged in the first silencing channel; the intra-ear noise reduction unit comprises an in-ear microwell plate and a silicon rubber case which are arranged at the in-ear end of the first noise elimination channel; the noise elimination and reduction structure suitable for being worn by human ears is adopted, the noise reduction principle based on air isolation through expansion is not needed any more, the air pressure difference between the ear canal and the outside of the ear is small, and no stuffy feeling exists; the impedance composite ventilation noise reduction principle is adopted, the insertion loss of the silencing device is greatly improved, and the noise reduction performance of the product is guaranteed.

The invention provides a probe detector for an aural sound abnormal cavity. The probe detector is characterized in that an electroacoustic transducer and an acoustoelectric transducer for receiving sound are arranged in a probe shell, and a detected cavity is connected with the shell through a sound transmitting and receiving pipeline; and the shell is provided with a pulse stimulation sound system. The detection method comprises the steps that the probe emits basic stimulus sound, and plays stimulation short sound through the pulse stimulation sound system; and the generated basic stimulationdata is stored into a header file of an otoacoustic detection project by using simulation software to realize sample acquisition, sample data processing, statistics of stability indexes of transmitted waves and received waves and judgment of probe indexes of the detected cavity. According to the probe detector, dynamic automatic calibration of an earphone probe is realized by using a digital signal processing technology and a machine learning method, so that the purpose of distinguishing air from an abnormal coupling cavity is achieved; a program is used for automatically distinguishing detection of the probe in air and a metal coupling cavity (0.2 cc to 0.7 cc), detection of a human ear canal and extensive ear sound probe microphone calibration.