46 results about "Audiometry" patented technology

According to a preferred embodiment of the invention, a system for audiometric assessment and user-specific acoustic enhancement, comprising an audiometry management module, a tone generator coupled to the audiometry management module and adapted to generate streams of acoustical output, and a hearing profile data file, is disclosed. According to the embodiment, the audiometry management module, in a plurality of sessions, instructs the tone generator to send a series of streams of acoustical output of varying acoustical intensity, and, on receiving a series of user responses responsive to audible perception of sounds generated from the streams of acoustical data, the audiometric management module determines, for each of a plurality of frequencies, a hearing threshold, and stores at least that threshold in the hearing profile data file.

The invention discloses a voice detection method of power equipment failure based on a combined similar diagonalizable blind source separation algorithm. The method comprises the specific steps as follows: (1) adopting a microphone array; (2) separating all independent sound source signals from sound signals collected by the microphone array by adopting the combined similar diagonalizable blind source separation algorithm; (3) extracting Mel-MFC (Frequency Cepstral Coefficients) of the independent sound source signals as sound characteristic parameters, and identifying the sound signals through a model matching algorithm, wherein a reference sample template with a minimal matching distance is a result of identifying the operating sound of the power equipment after a sound template to be tested and all reference sample templates are matched. According to the voice detection method provided by the invention, the characteristics of a non-Gaussian source signal can be enhanced, a source signal which is more clear than a Fast ICA (Independent Component Analysis) can be estimated, the similarity coefficients of the separated signal and the source signals are 0.9 or above, the voice frequency audiometry on the separated signals can be carried out, and the signals separated by a JADE algorithm is clear and distinguishable.

The invention relates to a device of a spatial auditory clinical audiometric system. The audiometric system and the device are suitable for a small-scale acoustic space used clinically in a hospital,and can support behavioral tests of spatial direction and distance auditory localization under various conditions comprising a quiet environment or a noise environment, a single sound source or a plurality of sound sources, coincide or separation of a noise source and a target sound source, and the like. By changing the interval of loudspeakers on a semi-circular ring, space auditory capability audiometry with different spatial resolutions is realized; change of the azimuth angle of a test seat is controlled through rotation of a numerical control turntable so as to meet audiometry requirements of different sound source spatial orientations; and the numerical control turntable for fixing the test seat is placed on a ground track so as to realize a spatial auditory distance localization capability test. The device can adapt to the spatial auditory clinical audiometry under a condition of small acoustic space, provides an effective test scheme of whole-space spatial auditory capability on a horizontal plane in a limited space, and can well meet requirements of spatial coordinate precision of otological clinical spatial auditory tests.

The invention discloses an autonomous fitting hearing aid system based on an intelligent terminal. The system comprises an ear hearing aid used for realizing hearing compensation and a mobile intelligent terminal used for realizing audiometry and fitting. The ear hearing aid and the mobile intelligent terminal carry out wireless communication. In a fitting method, through a questionnaire and audiometry of left and right ears respectively, a hearing condition of a user is acquired. Based on the hearing condition, a hearing map and hearing damage state data are made; hearing compensation prescriptions of left and right ears of the user are generated so as to acquire different voice frequencies of the left and right ears of the user and different sound strength gains, parameters are arranged on hardware of the ear hearing aid, and then a voice signal received by a microphone is segmented according to a frequency, and different amplification and compression are adopted for voices with different frequency ranges. A noise suppression algorithm is used to restrain noises generated by an environment and a hearing aid circuit. Signals of each frequency range are synthesized and finally the synthesized voice signal is output through a loudspeaker. By using the system and the method, fitting cost of the hearing aid user can be greatly reduced.

The invention discloses a bracket type soundproof audiometry device. The bracket type soundproof audiometry device comprises a bracket and headphones, wherein the bracket comprises a horizontal rod and a vertical rod; the horizontal rod is connected with the upper part of the vertical rod; the headphones are arranged on the horizontal rod and are pressure type airbag headphones; the vertical rod can vertically stretch; the horizontal rod can horizontally stretch. The headphones are arranged on the horizontal rod and the vertical rod which can be stretched, so the positions of the headphones are conveniently adjusted in the audiometry process according to the height of a user, and convenience in use is realized; meanwhile, the headphones are pressure type airbag headphones, so that the sealing property is adjusted by air pressure when the headphone are used and a soundproof effect is realized; audiometry is not needed to be performed in a soundproof room, so that the space is greatly saved; in addition, the influence of sound transmitted by audiometry on the audiometry result is avoided, and the audiometry precision is improved.

The invention discloses a mobile fitting diagnosis on-board platform based on Internet. The mobile fitting diagnosis on-board platform comprises a vehicle, the compartment of which is divided into a hearing audiometry chamber, a display fitting studio, and an ear mold producing chamber by acoustic barrier boards; an on-board terminal, which comprises a data, query, and communication unit, and a vehicle management unit; a client, which comprises a data acquisition unit, a query unit, a reservation unit, and a prompting unit. The client and the on-board terminal are respectively connected with an Internet server data management terminal by the Internet, and the Internet server data management terminal comprises a storage platform, a processing platform, an analysis platform, an on-line expert support platform, and a vehicle positioning and management platform. The mobile fitting diagnosis on-board platform has advantages of large fitting resource coverage, high resource utilization efficiency, and abilities of relieving hearing aid consultant resource shortage, improving profession levels of hearing aid consultants and physicians, helping hearing impairment patients in remote areas, and providing accurate data support for care strategy made by government for hearing impairment patients.

The invention discloses a mobile fitting diagnosis on-board platform based on Internet. The mobile fitting diagnosis on-board platform comprises a vehicle, the compartment of which is divided into a hearing audiometry chamber, a display fitting studio, and an ear mold producing chamber by acoustic barrier boards; an on-board terminal, which comprises a data, query, and communication unit, and a vehicle management unit; a client, which comprises a data acquisition unit, a query unit, a reservation unit, and a prompting unit. The client and the on-board terminal are respectively connected with an Internet server data management terminal by the Internet, and the Internet server data management terminal comprises a storage platform, a processing platform, an analysis platform, an on-line expert support platform, and a vehicle positioning and management platform. The mobile fitting diagnosis on-board platform has advantages of large fitting resource coverage, high resource utilization efficiency, and abilities of relieving hearing aid consultant resource shortage, improving profession levels of hearing aid consultants and physicians, helping hearing impairment patients in remote areas, and providing accurate data support for care strategy made by government for hearing impairment patients.

The invention relates to a method for sound source localization based on horizontal audiometry. The method comprises the following steps: (1) in a standard sound-insulating dark room, eight loudspeakers are distributed uniformly in a circle with a 50 cm radius, a test subject is the centre of the circle and at the same height as the circle, and the included angle of two adjacent loudspeakers is kept at 45 degrees; (2) eyes of the subject are covered with a black fabric; (3) one of the eight loudspeakers is randomly allowed to make a sound for 40 microseconds with a time interval of 5 seconds,totally 100 times in one test cycle; and (4) the total error is calculated, which is the sum of absolute values of difference between actual position and estimated position of the sound source in thetotal 100 tests, and the test accuracy rate is calculated, which is the percentage of times when the subject accurately judges the sound source position. The method is simple and feasible, and has high test accuracy and complete functions.

The invention discloses a hood-type audiometric device. The device comprises a shell and earshields, wherein the earshields are connected with sound production devices; a sound isolation layer is arranged between each earshield and the shell; a seal part is arranged on the outer edge of each earshield and the shell. According to the device, external noise can be effectively isolated since the sound isolation layer is arranged between the shell and each earshield and seal parts are the outer edge of the shell and each earshield, a silence space is formed for the ears of a detected person to ensure normal performance of listening tests. The hood type audiometric device can be used for carrying out listening tests as long as the device is worn on the head of the detected person during testing and does not need to be used in a sound isolation room, is convenient to carry, and has wide application.

The invention discloses an online audiometry method and system, and relates to the technical field of computers. A specific embodiment of the method comprises the following steps: in response to a start audiometry operation, pulling a corresponding audio file according to user attribute information; playing the audio file, acquiring audiometric decibel values of one ear of the user under different Hertz, accumulating the audiometric decibel values and averaging to obtain an audiometric decibel mean value of the ear; and determining a decibel range of the audiometric decibel mean value, and taking a weak hearing grade corresponding to the decibel range as an audiometric result of the ear of the user. According to the embodiment, a more convenient online audiometry tool can be provided for a patient with weak hearing, time and labor are saved, and the accuracy is high.

The invention provides an audiometry device based on over-sampled multi-frequency multi-amplitude joint estimated auditory evoke potentials. The audiometry device comprises a device control module, as well as a modulation sound generation device, a data acquisition device and a data processing and analysis module, which are connected with the device control module respectively. The device has thefollowing advantages and technical effects: 22 modulation sounds with different modulation frequencies and carrier frequencies can be utilized to simultaneously simulate the human ears and simultaneously evoke multiple ASSRs (auditory steady-state evoke responses); the frequency spectrum estimation algorithm of multi-frequency multi-amplitude joint estimation is adopted for estimating the amplitudes of the modulation signals in the auditory evoked potentials, thereby estimating the response of a carrier signal corresponding to each modulation signal and fitting auditory frequency response curves at all levels according to all groups of amplitude responses; the audiometry device can carry out frequency spectrum estimation in the environment with low signal-to-noise ratio, has very high frequency spectrum resolution and can realize simultaneous detection of sound frequency responses of at most 22 frequencies of an auditory system; and the detection time is further greatly shortened.

The invention relates to a monitoring system and a monitoring method for measuring the sound source positioning capability. The monitoring system comprises a monitoring cabin, a sound giving device, a measuring chair, a monitoring response recording head frame and a control device, wherein the monitoring cabin comprises a spherical surface inner cabin wall, a sound transmission shielding device is attached into the inner cabin wall, the sound giving device is arranged in a spherical surface cabin wall, the measuring chair is arranged in the monitoring cabin, a regulating device used for regulating the height and the angle is arranged on the measuring chair, the monitoring response recording head frame comprises a head frame and a monitoring sensing device, the monitoring sensing device is arranged on the head frame and is used for monitoring the response action of a testee after hearing test sound and generating corresponding sensing information, and the control device is respectively connected with the sound giving device, the regulating device and the monitoring sensing device and is used for controlling the sound giving device to give out the test sound, regulating the height and the angle of the measuring chair according to received regulating instructions, receiving the sensing information and carrying out calculation according to the sensing information and the position giving out the test sound to obtain a monitoring result. The monitoring system and the monitoring method have the advantages that the measurement accuracy is high, and the measurement is simple and convenient.

An assisting listening device having audiometry function includes an earphone, a testing signal generator, a feedback generator and a control box. The testing signal generator is controlled by a digital signal processor of the control box to provide a testing signal to a speaker of the earphone. The feedback generator will generate a feedback signal to the digital signal processor of the control box subject to the testing signal, enabling the digital signal processor to evaluate the user's hearing threshold level so that the user can adjust the functioning of the assisting listening device optimally subject to the evaluation result.