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49 results about "Otoacoustic emission" patented technology
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An otoacoustic emission (OAE) is a sound which is generated from within the inner ear. Having been predicted by Thomas Gold in 1948, its existence was first demonstrated experimentally by David Kemp in 1978 and otoacoustic emissions have since been shown to arise through a number of different cellular and mechanical causes within the inner ear. Studies have shown that OAEs disappear after the inner ear has been damaged, so OAEs are often used in the laboratory and the clinic as a measure of inner ear health.
Method and apparatus for automatic non-cooperative frequency specific assessment of hearing impairment and fitting of hearing aids
ActiveUS20070156063A1High frequency resolutionMany timesVibration measurement in solidsAnalysing solids using sonic/ultrasonic/infrasonic wavesSmall brainstemHearing perception
A method and device for automatically assessing loss of hearing sensitivity and compression (recruitment) with user defined frequency resolution by means of extrapolated DPOAE I / O functions and ABRs as well as for automatically fitting hearing aids without any cooperation of the subject tested using a device having a display screen attached to a handheld device generating and collecting otoacoustic emission signals and brain stem response signals into a programmed with a clinical audiogram with fitting parameters for hearing aids calculated on the basis of assessed hearing threshold and compression and identifying the type of hearing required for the individual.
Owner:NATUS MEDICAL
Method and apparatus for automatic non-cooperative frequency specific assessment of hearing impairment and fitting of hearing aids
ActiveUS7223245B2High frequency resolutionMany timesVibration measurement in solidsAnalysing solids using sonic/ultrasonic/infrasonic wavesImage resolutionHearing perception
A method and device for automatically assessing loss of hearing sensitivity and compression (recruitment) with user defined frequency resolution by means of extrapolated DPOAE I / O functions and ABRs as well as for automatically fitting hearing aids without any cooperation of the subject tested using a device having a display screen attached to a handheld device generating and collecting otoacoustic emission signals and brain stem response signals into a programmed with a clinical audiogram with fitting parameters for hearing aids calculated on the basis of assessed hearing threshold and compression and identifying the type of hearing required for the individual.
Owner:NATUS MEDICAL
Stimulus frequency otoacoustic emission tuning curve detection and calibration system
ActiveCN102892069AEasy to detectRealize analysisDiagnostic recording/measuringSensorsFine structureStimulus frequency
The invention relates to a stimulus frequency otoacoustic emission (SFOAE) tuning curve detection and calibration system, which comprises a computer, a sound card, an acoustic sensor and a preamplifier. A sound card driving system and a test calibration execution system are arranged in the computer. An acoustic sensor position calibration module in the test calibration execution system is used for calibrating the position of the acoustic sensor. An SFOAE Fine Structure detection module is used for extracting SFOAEs within a target stimulus frequency range, and determining optimal stimulus frequency. An SFOAE I / O function detection module is used for extracting a relationship between frequency otoacoustic emissions and stimulus sounds within a stimulus intensity range at the optimal stimulus frequency, and determining an inhibition rule. An SFOAE turning curve detection module is used for extracting the SFOAEs in line with the inhibition rule at the optimal stimulus frequency, and drawing an SFOAE tuning curve. The SFOAEs can be quantitatively detected and analyzed by extracting characteristic signals of the SFOAEs; and the system can be widely applied to audibility detection.
Owner:TSINGHUA UNIV +1
Calibration method and apparatus for ear plug type transducer for ear acoustic emission audition detection
The invention discloses a calibrating device of an ear-plugging type energy transducer used for otoacoustic emission hearing detection. The calibrating device comprises an artificial ear, a sound pressure meter, a digital-analog converting device, an analog-digital converting device and a computer. The artificial ear is used for simulating the average acoustic characteristics of normal human ears and comprises an acoustic couple resonator and a standard microphone which is connected with one end of the acoustic couple resonator; the sound pressure meter is connected with the standard microphone of the artificial ear and is used for measuring an electrical signal produced by the standard microphone and converting the electrical signal into a sound pressure value; the digital-analog converting device is used for providing the electrical signal for detecting a loudspeaker of the energy transducer to be detected; the analog-digital converting device is used for collecting the electrical signal output by the microphone of the energy transducer to be detected; and the computer is connected with the digital-analog converting device and the analog-digital converting device. The device can complete the sensitivity calibrating work of the loudspeaker and the microphone in a process, thus being more convenient and quicker; besides, the sensitivity of the sound pressure is measured as to the microphone.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Method and Apparatus for measuring Distortion Product Otoacoustic Emissions (DPOAE) by means of frequency modulated stimuli
A method to reduce DPOAE fine structure in the measurement of DPOAE acoustic signals generated in the cochlea in response to two primary tones.
Owner:PATH MEDICAL
Method for automatic non-cooperative frequency specific assessment of hearing impairment and fitting of hearing aids
InactiveUS20120059274A1High frequency resolutionHigh-frequency-resolution scanningAudiometeringSensorsImage resolutionSmall brainstem
A method and device for automatically assessing loss of hearing sensitivity and compression (recruitment) with user defined frequency resolution by means of extrapolated DPOAE I / O functions and ABRs as well as for automatically fitting hearing aids without any cooperation of the subject tested using a device having a display screen attached to a handheld device generating and collecting otoacoustic emission signals and brain stem response signals into a programmed with a clinical audiogram with fitting parameters for hearing aids calculated on the basis of assessed hearing threshold and compression and identifying the type of hearing required for the individual.
Owner:NATUS MEDICAL
Stenger Screening in Automated Diagnostic Hearing Test
InactiveUS20070129649A1Quickly and accurately test his own hearingDiagnostic recording/measuringSensorsSpeech reception thresholdAcoustic reflex
Method and system are disclosed for automated testing of a patient's hearing. The automated hearing test allows the patient to quickly and accurately test his own hearing. The patient is instructed and prompted for inputs and responses as needed. The patient and / or operator can select one or several tests to be performed, including air and bone conduction testing with masking, speech reception threshold, speech discrimination, tympanogram, acoustic reflex, and otoacoustic emissions testing. Stenger screening is automatically performed for some patients based on the difference in pure tone frequency air conduction thresholds. Multiple languages are supported. Data obtained from one test may be used for another test or another iteration of the same test to calculate masking levels. The automatic hearing test also detects and compensates for ambient noise in the test results. If a contingency occurs, the automated hearing test is configured to page the operator for assistance.
Owner:TYMPANY
Auditory sensitivity detection system based on stimulus frequency otoacoustic emission
The invention relates to an auditory sensitivity detection system based on stimulus frequency otoacoustic emission. The detection system comprises an audio card, an acoustic sensor, a computer and a signal feedback device; an input end of a micro loudspeaker is connected with the audio card, an output end of a micro microphone is connected with the audio card, and the signal feedback device is connected with the computer; an auditory sensitivity comprehensive detection system is arranged in the computer, a test execution system comprises an intensity sensitivity detection module based on SFOAEs and a frequency sensitivity detection module based on SFOAEs, and the intensity sensitivity detection module based on SFOAEs is used for determining auditory intensity threshold values correspondingto corresponding frequency points by detecting stimulus frequency otoacoustic emission detection data at all the frequency points; the frequency sensitivity detection module based on SFOAEs is used for extracting a stimulus frequency otoacoustic emission inhibition tuning curve at a designated frequency point and determining the frequency sensitivity at the designated frequency point.
Owner:TSINGHUA UNIV
Method and Apparatus for Automated Detection of Suppression of TEOAE by Contralateral Acoustic Stimulation
InactiveUS20150342505A1Reduce artifactsEasy to separateAudiometeringSensorsStatistical analysisAcoustics
A method of generating and measuring transiently evoked otoacoustic emissions (TEOAE) acoustic signals generated in the cochlea using automated detection to determine contralateral suppression of TEOAE via statistical analysis of suppressed and unsuppressed responses.
Owner:PATH MEDICAL
Stenger screening in automated diagnostic hearing test
InactiveUS20090156959A1Quickly and accurately test his own hearingDiagnostic recording/measuringSensorsSpeech reception thresholdAcoustic reflex
Owner:TYMPANY
Hand-held hearing screener apparatus
A hearing screener apparatus is disclosed and may include a housing and a testing probe operatively coupled to the housing. The testing probe may generate electrical signals based on otoacoustic emissions of the inner ear of a test subject, when the testing probe is inserted into the ear canal of the test subject. The hearing screener apparatus may also include a housing, a digital signal processor (DSP) within the housing, and a testing probe operatively coupled to the housing. The DSP may generate measurement data based on the electrical signals. At least one microphone may be mounted with the testing probe for generating the electrical signals based on the otoacoustic emissions. The testing probe may be vibrationally isolated from the housing. The testing probe may be elastically coupled to the housing. The hearing screener apparatus may also include an isolation body elastically coupled between the testing probe and the housing.
Owner:INTERACOUSTICS
Hand-held portable hearing screening apparatus utilized otoacoustic emissions
InactiveCN1827040ASimple hardware circuitConvenience and Simplification of ControlEar treatmentAudiometeringLiquid crystallineHand held
There is a handholding portable acoustic emission screening examination appearance, which belongs to medical service appearance field. It contains a micro probe composed of a micro loudspeaker that is used to broadcast stimulation sound, a micro microphone that is used to distill acoustic emission signal and a electronic label that is used to probe information and protect product property through key management; A simulation manipulation part composed of micro loudspeaker volume regulating circuit, signal filtering treating circuit and signal multiple-stage enlargement circuit; A data processing part composed of digital-to-analog conversion circuit that is used to sample the distilled acoustic emission signal, high-speed data processing CMOS chip that is used to engender stimulation sound and control management menu, acoustic data storage, program storage and liquid crystalline display storage, RS232 asynchronous expansion serial port, USB interface, JTAG interface, etc. externally input / output and conjunction interfaces; And a keyboard used to display liquid crystalline display screen and input information. This invention is convenient to use, it has small bulk and is facilitating to take.
Owner:SHANGHAI JIAO TONG UNIV
Hearing test device
PendingCN107374644AListening Test ImplementationReduce distractionsAudiometeringSensorsSound sourcesHearing test
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.
Owner:李国平
Multifunctional comprehensive otoacoustic emission detector
InactiveCN103239235AImplementing Otoacoustic Emission DetectionElectrical apparatusAudiometeringContralateral stimulationComputer module
A multifunctional comprehensive otoacoustic emission detector comprises a first probe with a microphone and a loudspeaker, a second probe used for playing contralateral acoustic stimulation, a prepositive unit used for filtering and amplifying signals output by the microphone of the first probe, and a computer system for processing the signals processed by the prepositive unit. The computer system comprises an otoacoustic emission signal detection module, an otoacoustic emission signal preprocessing module, an otoacoustic emission signal processing module and a user interaction module, both the detection module and the precessing module comprises a plurality of submodules, the user interaction module comprises a detection and processing control module and a result display module, the detection and processing control module comprises a setting control member of otoacoustic emission types and contralateral stimulation signal types, and the result display module comprises a display control member of time domain waveforms, frequency spectra, noise distribution and the like. The multifunctional comprehensive otoacoustic emission detector can conveniently realize otoacoustic emission detection of different types as well as with / without contralateral acoustic stimulation.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Method and device for continuous in-ear hearing health monitoring on a human being
ActiveUS20170150908A1Correction for variationImproved noise suppressionIn the ear hearing aidsAudiometeringAdaptive filterEngineering
A device and method for the continuous monitoring of otoacoustic emissions (OAE) levels on an individual worker uses as a pair of earpieces each featuring an external microphone, an internal microphone and a pair of miniature receivers. An adaptive filtering noise rejection processing of the measured distortion product OAE (DPOAE) is used to further improve the Signal-to-Noise ratio in frequencies where passive isolation remains insufficient. The adaptive filtering noise rejection technique relies on a Normalized Least-Mean-Square (NLMS) algorithm that uses the ipsilateral external microphone and the contralateral internal microphone to reject the noise from the measured DPOAE signals for each in-ear OAE probe. A DPOAE signal extraction algorithm provides for an increase in results reliability on a greater dynamic range in DPOAE magnitudes than known methods of DPOAE signal extraction. The device and method is suitable for the continuous monitoring of workers' hearing capabilities in industrial noises up to 75 dB(A).
Owner:EERS GLOBAL TECH
Method and apparatus for automatic non-cooperative frequency specific assessment of hearing impairment and fitting of hearing aids
ActiveUS7922671B2High frequency resolutionHigh-frequency-resolution scanningVibration measurement in solidsAnalysing solids using sonic/ultrasonic/infrasonic wavesImage resolutionSmall brainstem
A method and device for automatically assessing loss of hearing sensitivity and compression (recruitment) with user defined frequency resolution by means of extrapolated DPOAE I / O functions and ABRs as well as for automatically fitting hearing aids without any cooperation of the subject tested using a device having a display screen attached to a handheld device generating and collecting otoacoustic emission signals and brain stem response signals into a programmed with a clinical audiogram with fitting parameters for hearing aids calculated on the basis of assessed hearing threshold and compression and identifying the type of hearing required for the individual.
Owner:NATUS MEDICAL
Earphone system self-adaptive to hearing characteristics of user
InactiveCN108111936AImprove hearingEarpiece/earphone mechanical/electrical switchesTransducer circuitsExternal Auditory CanalsEngineering
The invention discloses an earphone system self-adaptive to hearing characteristics of a user, which comprises an intelligent audio playing device, a specially-made earphone and human ears, wherein amain control module and a signal output end are arranged in the intelligent audio playing device; the specially-made earphone is provided with a loudspeaker device, a sound collecting device, a signalpreprocessing circuit and a signal transmission module; the loudspeaker device is connected with the signal transmission module; the sound collecting device is connected with the signal transmissionmodule through the signal preprocessing circuit; when the specially-made earphone is worn in a sealing mode and connected with the intelligent audio playing device, the main control module transmits agenerated testing audio signal to the loudspeaker device; the main control module receives and records an otoacoustic emission signal, which is collected by the sound collecting device, is processedby the signal preprocessing circuit and exists in the external auditory canal; and the main control module analyzes the otoacoustic emission signal and adjusts the output characteristic of a music audio signal output by the signal output end through a hardware or software algorithm, so that listening feeling is improved aiming at a hearing curve of the user.
Owner:王超
Newborn hearing screening instrument
InactiveCN104921734AHigh clinical application valueEnables portable operationAudiometeringAuscultation instrumentsSignal processing circuitsHuman–machine interface
The invention discloses a newborn hearing screening instrument which comprises a power module, a DSP processor module, an audio processing module, a power amplifier circuit, a probe circuit, a signal processing circuit, a storage module, a serial port communication module, a keyboard and a displayer. The processor module, the signal processing circuit and the power amplifier circuit are connected with the audio processing module. The power amplifier circuit and the signal processing circuit are connected with the probe circuit. The power module supplies power to the modules. According to the newborn hearing screening instrument, the functions of detecting transient evoked otoacoustic emission signals and distortion product otoacoustic emission signals are achieved, the newborn hearing screening instrument is completely disengaged from PC environment, portable operation is achieved, an independent rechargeable battery is adopted for power supply, keyboard operation is performed, the color liquid crystal displayer is used as a terminal, the good man-machine interface operation is achieved, the real-time printing function is achieved, and the instrument is attractive and exquisite in structure and convenient to carry.
Owner:广州市麦力声医疗器械有限公司
Otoacoustic emission simulation and test system
The invention belongs to the technical field of a medical audiological detection system, and particularly relates to an otoacoustic emission simulation and test system. A fixing buckle of an acoustic input port is connected with an interface of an input end of a 2cm<3> coupling cavity to form a cavity, an earphone bracket is fixedly arranged in the cavity, an interface of an output end of the 2cm<3> coupling cavity is in sealed connection with one end of an interface bracket by an O-shaped ring, the other end of the interface bracket is connected with an acoustic receiving and output part of a simulation electrical cochlea, and the acoustic receiving and output part of the simulation electrical cochlea is connected with an electric control part of the simulation electrical cochlea to form the simulation electrical cochlea. The otoacoustic emission simulation and test system has the advantages that the basic functions of the human cochlea can be restored, and the actual otoacoustic emission effect can be simulated; the completeness and the effectiveness of the outputted otoacoustic emission signals can be ensured; and the size of a probe of the simulation electrical cochlea is the same as the size of a standard microphone for measuring, so on the premise of not damaging the characteristics of artificial ears, the direct replacement is realized according to requirements.
Owner:BEIJING JIAOTONG UNIV
Urocortin-deficient mice and uses thereof
InactiveUS7488865B2Reduced food intakeHigh affinityTissue cultureVector-based foreign material introductionAuditory thresholdsMolecular level
The present invention provides transgenic mice deficient in urocortin. Urocortin null mutant mice are hypersensitive to stress and display heightened anxiety-like behaviors in the elevated plus maze and open field tests. These mice also demonstrate physiological alterations in auditory thresholds and distortion product otoacoustic emissions. These results indicate that urocortin plays a modulatory role in anxiety-related behaviors and in contributing to the establishment of auditory thresholds. Such urocortin deficient mutant mice can provide useful models in the study of anxiety pathology and hearing physiology at the biochemical and molecular levels.
Owner:RES DEVMENT FOUND
Hearing diagnosis device and hearing diagnosis method
A hearing diagnosis device and a hearing diagnosis method are provided. The device includes a storage unit, an otoacoustic emission detecting module, and a hearing diagnosis management module. The storage unit stores a hearing diagnosis image sample database and a hearing information sample database. The otoacoustic emission detecting module is configured to perform an otoacoustic emission detecting operation by playing a test audio to an ear of a user to obtain a first hearing diagnosis image corresponding to the ear. The hearing diagnosis management module is configured to perform a hearing diagnosis operation according to the first hearing diagnosis image, a plurality of hearing diagnosis image samples of the hearing diagnosis image sample database, and a plurality of hearing information samples, respectively corresponding to the hearing diagnosis image samples, of the hearing information sample database, so as to determine first hearing information of the ear.
Owner:NATIONAL TSING HUA UNIVERSITY
Method and a device for monitoring a human brain's sub-cognitive activity using oto-acoustic emissions
Owner:SENSPD LTD
Signal detecting method and system
ActiveCN103892842AImprove detection efficiencyImprove accuracyAudiometeringTime domainMultiple frequency
The invention discloses a signal detecting method. The signal detecting method comprises the following steps that a time domain frequency-modulated signal is obtained and is taken as a stimulation signal to stimulate a reflection region and a distorted region, an otoacoustic emission signal generated by the reflection region is separated from an otoacoustic emission signal generated by the distorted region, and time-frequency domain filtering is conducted on the separated otoacoustic emission signal of the distorted region, so that a pure otoacoustic emission signal of the distorted region is obtained. In addition, the invention provides a signal detecting system. According to the signal detecting method and system, due to the fact that the time domain frequency-modulated signal is taken as the stimulation signal for stimulation, the signals of the reflection region and the distorted region are separated preliminarily according to the nonlinear characteristic of the otoacoustic emission signals, the pure otoacoustic emission signal is obtained by conducting filtering on the separated signal through a time-frequency domain filter, the detecting accuracy is improved, multiple frequencies within an extremely wide frequency range can be detected at a time, and the detecting efficiency is improved.
Owner:SHENZHEN INST OF ADVANCED TECH
Method and apparatus for measuring otoacoustic emission
InactiveUS9055897B2Short OAE measuring timeVibration measurement in solidsMaterial analysis using acoustic emission techniquesOtoacoustic emissionPhysics
Owner:SAMSUNG ELECTRONICS CO LTD
Method and device for continuous in-ear hearing health monitoring on a human being
ActiveUS10548516B2Correction for variationImproved noise suppressionIn the ear hearing aidsAudiometeringAdaptive filterNoise
A device and method for the continuous monitoring of otoacoustic emissions (OAE) levels on an individual worker uses as a pair of earpieces each featuring an external microphone, an internal microphone and a pair of miniature receivers. An adaptive filtering noise rejection processing of the measured distortion product OAE (DPOAE) is used to further improve the Signal-to-Noise ratio in frequencies where passive isolation remains insufficient. The adaptive filtering noise rejection technique relies on a Normalized Least-Mean-Square (NLMS) algorithm that uses the ipsilateral external microphone and the contralateral internal microphone to reject the noise from the measured DPOAE signals for each in-ear OAE probe. A DPOAE signal extraction algorithm provides for an increase in results reliability on a greater dynamic range in DPOAE magnitudes than known methods of DPOAE signal extraction. The device and method is suitable for the continuous monitoring of workers' hearing capabilities in industrial noises up to 75 dB(A).
Owner:EERS GLOBAL TECH
Auditory Sensitivity Detection System Based on Stimulus Frequency Otoacoustic Emissions
Owner:TSINGHUA UNIV
Bone conduction earphone equalization method based on stimulation frequency otoacoustic emission
ActiveCN111669676AConvenient, objective and reliable measurementMicrophonesSignal processingSubjective audiometryBone conduction hearing
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.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI
Hand-held portable hearing screening apparatus utilized otoacoustic emissions
InactiveCN100401981CSimple hardware circuitConvenience and Simplification of ControlEar treatmentAudiometeringLiquid crystallineHand held
Owner:SHANGHAI JIAOTONG UNIV
Microphone and speaker integrated system
The invention relates to a microphone and loudspeaker integrated system, and the system comprises a loudspeaker assembly which is used for converting an inputted audio electronic signal into a stimulation sound signal; a otoacoustic emission probe comprising a shell, an earphone sound guide pipe and a miniature microphone, aminiature microphone used for detecting an acoustic signal in a human earand converting the acoustic signal into an electric signal, and a microphone conditioner assembly used for conditioning the electric signal detected in the ear; and the earphone sound guide pipe and the miniature microphone are arranged in the shell, one end of the earphone sound guide pipe is connected with the loudspeaker assembly, and the other end of the earphone sound guide pipe penetrates out of the shell and is used for transmitting stimulation sound signals into ears. The precision can be improved, and the detection accuracy is improved.
Owner:HANGZHOU ERQINGCONG TECH CO LTD +1
Method and Apparatus for Automated Detection of Suppression of TEOAE by Contralateral Acoustic Stimulation
ActiveUS20160256083A1Reduce artifactsEasy to separateAudiometeringSensorsStatistical analysisAcoustics
A method of generating and measuring transiently evoked otoacoustic emissions (TEOAE) acoustic signals generated in the cochlea using a scheme of stimulating both ears simultaneously and one of each ears in a switching scheme with automated detection of contralateral suppression of TEOAE via statistical analysis of suppressed and unsuppressed responses.
Owner:PATH MEDICAL
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