49 results about "Otoacoustic emission" patented technology

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.

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.

The present invention relates to a method for monitoring the brain's sub-cognitive activity through otoacoustic emissions. More specifically, the present invention deals with a method and device for monitoring the brain's functions that are manifested by sub-cognitive activities. The sub cognitive activities are monitored by matching to the spectrograms of a standard evoked oto-acoustic emissions signals to monitor mismatches as indicators of normal or malfunctioning sub cognitive neurological functions. The invention relates also to a device for monitoring the brain's sub-cognitive activity through otoacoustic emissions. More specifically, the present invention deals with a method and device for monitoring the brain's functions that are manifested by sub-cognitive activities. The sub cognitive activities are monitored by matching to the spectrograms of a standard evoked oto-acoustic emissions signals to monitor mismatches as indicators of normal or malfunctioning sub cognitive neurological functions.

A method of measuring an otoacoustic emission (OAE) is provided. The method comprises generating a frequency OAE graph with N plot lines, by performing frequency sweeping on N signals having different levels, wherein N is a natural number of at least 2; and when there are plot lines that overlap each other in the frequency OAE graph, compensating values of the N plot lines of the frequency OAE graph in a predetermined frequency section including a frequency section where the plot lines overlap each other.

An auditory sensitivity detection system based on stimulus-frequency otoacoustic emissions. The detection system comprises an audio card (2), an acoustic sensor (3), a computer (1) and a signal feedback device. An input end of a micro loudspeaker (31) is connected to the audio card (2); an output end of a micro microphone (32) is connected to the audio card (2); the signal feedback device is connected to the computer (1); an auditory sensitivity comprehensive detection system is provided in the computer (1); and a test execution system comprises an intensity sensitivity detection module based on SFOAEs and a frequency sensitivity detection module based on SFOAEs, wherein the intensity sensitivity detection module based on SFOAEs is used for determining an auditory intensity threshold value corresponding to a corresponding frequency point by detecting stimulus-frequency otoacoustic emission detection data at each frequency point, and the frequency sensitivity detection module based on SFOAEs is used for extracting a stimulus-frequency otoacoustic emission suppression tuning curve at a designated frequency point and determining the frequency sensitivity at the designated frequency point.

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.