59 results about "Pure tone" patented technology

The embodiment of the invention discloses a tinnitus detection method based on an electroencephalogram level. The tinnitus detection method comprises the following steps: preselecting a preliminary frequency range of a tinnitus patient; extracting a plurality of frequency points in the initial frequency range according to a set frequency interval, and generating a plurality of narrow-band pure tone signals by taking each frequency point as a center; performing tinnitus matching on the patient by using the plurality of narrow-band pure tone signals to obtain initial tinnitus frequency and intensity; according to the hearing loss degree of the patient, a target narrow-band pure tone signal covering the initial tinnitus frequency and notch signals on the two sides of a center frequency point of the target narrow-band pure tone signal are used for conducting a sound giving test on the patient; and determining the final tinnitus frequency according to the electroencephalogram response of the patient under the sound supply test. According to the embodiment, the tinnitus detection accuracy is improved.

The invention relates to the technical field of health data processing, in particular to an intelligent health data processing method and device and a storage medium, and the method comprises the steps: collecting the pure tone hearing threshold of a user under a standard frequency table, constructing a pure tone audiometry map of the user, extracting the hearing threshold features of the user, constructing the hearing sensitive state index of the user, and obtaining the hearing sensitive state index of the user; then determining a basic hearing state of the user; collecting health data of the user in real time; calibrating an otoacoustic emission amplitude and an ABR wave V amplitude of the user; constructing a peripheral-central function coupling index of the user; and constructing an occult hearing loss model based on the peripheral-central function coupling index and the hearing processing disorder index of the user so as to output the occult hearing loss state of the user, and performing hearing health early warning on the user by integrating the occult hearing loss state of the user and the basic hearing state. According to the invention, the efficiency of health data processing is effectively improved.

First audio content at a first frequency is output alternately with second audio content at a second frequency different from the first. An audio signal indicating otoacoustic emission is received in response. The first and second audio content may be pure tones, and may be non-overlapping in time separated by gaps less than 100 ms. The second frequency may be 1.15-1.3 times the first. A microphone 330 may receive an input indication distortion product otoacoustic emissions. The audio content may be output by a single loudspeaker 325. The health of the subject’s ear may be determined. Further audio content may be determined and output.

Apparatus is provided to detect motion of a target reflecting one or more pure tone signals, comprising transmission of one or more pure tone acoustic signals, reception of the signal reflected by a target ensonified by the transmitted signal, and motion detection of the ensonified target from analysis of the Discrete Fourier Transform (DFT) of the received signal, in particular values of the time-variance of energy within adjacent frequency bins in the signal DFT, where the emitted tone has a frequency at the boundary between the two adjacent frequency bins.

The invention relates to the technical field of Bluetooth, and discloses a dynamic bass enhancement method and system for Bluetooth equipment, and the method comprises the steps: separating a complex tone signal component and a pure tone signal component from an audio signal, so as to calculate a harmonic proportion attenuation factor of the audio signal; determining an auditory transmission distance between the Bluetooth device and the audience, and calculating a low-frequency attenuation amount of the audio signal in a transmission process; calculating the bass perception loudness of the audience, and obtaining the target bass enhancement intensity of the audience; determining a harmonic balance equivalent of an output sound field of the Bluetooth device, and calculating an effective bass enhancement amount of the Bluetooth device; and performing bass enhancement processing on the audio signal based on the effective bass enhancement quantity and the target bass enhancement intensity to obtain an enhanced audio signal. According to the invention, the dynamic bass enhancement effect of the Bluetooth device can be improved.

This invention discloses a high-efficiency circulating cooling system and control method for vacuum isothermal forging, as well as a storage medium, relating to the field of temperature control. It includes an initial self-test module, a sensor monitoring module, an external environment monitoring module, a data processing module, and a feedback processing module. By sending pure-tone sinusoidal sound waves to the cooling water pipes, it quickly detects whether the cooling water pipes are blocked. Combining external environmental influencing factors, it comprehensively evaluates the operating status of the cooling water pipes based on real-time water flow parameters at various points in the pipes, improving accuracy. It dynamically adjusts the rotation speed of the closed-loop pumping unit, supplying cooling water on demand, saving energy, reducing wear, optimizing the production process, lowering maintenance costs, and improving cooling efficiency.

The invention discloses a pure tone sonometer which comprises a shell, an electric control device, a control device, a TFT display screen, a feedback handle, an air conduction audio output circuit, a bone conduction audio output circuit, an air conduction earphone and a bone conduction earphone, the electric control device is arranged in the shell, the control device is arranged in the shell and connected with the electric control device, and the TFT display screen is connected with the feedback handle. The control device is exposed on the surface of the shell; the feedback handle is electrically connected with the electric control device, and the TFT display screen is used for displaying a test result; a feedback key is arranged on the feedback handle; the air conduction audio output circuit is arranged in the shell, and the air conduction audio output circuit is electrically connected with the electric control device; the bone conduction audio output circuit is arranged in the shell, and the bone conduction audio output circuit is electrically connected with the electric control device; the air conduction earphone is connected with the output end of the air conduction audio output circuit; and the bone conduction earphone is connected with the output end of the bone conduction audio output circuit. According to the technical scheme, the pure tone sonometer can improve the test accuracy.

The invention discloses a noise online monitoring microphone sensitivity comparison calibration device and method. The device comprises an open cavity, a microphone to be calibrated, a monitoring microphone, a pure tone generator, a sound guide tube and a control unit, wherein the open type cavity is provided with a first connecting end and a second connecting end which are oppositely arranged, the first connecting end is used for being communicated with the sound inlet side of the microphone to be calibrated, the second connecting end is used for being communicated with the sound inlet side of the monitoring microphone, and the side wall of the open type cavity is provided with a plurality of through holes communicated with the external environment. External noise can enter the open type cavity; the sound guide tube is used for communicating the pure tone generator with the sound guide interface of the open cavity so as to guide the pure tone output by the pure tone generator into the open cavity; and the control unit is in signal connection with the pure tone generator, the monitoring microphone and the microphone to be calibrated, and is used for adjusting the output of the pure tone generator based on a feedback signal of the monitoring microphone, so that after a pure tone sound field in the open cavity reaches a preset reference condition, the microphone to be calibrated is calibrated. And reading a return signal of the microphone to be calibrated to obtain the sensitivity or the sensitivity characterization value of the microphone to be calibrated.

The invention provides an automatic debugging method and system, electronic equipment and a storage medium. The method is used for a sound sensing device and comprises the steps that a test audio is played to a user, and the test audio is any one of words, syllables, music, voice, vocal music and pure tone; receiving response information of the user; determining whether the response information is matched with the test audio; when the response information is not matched with the test audio, storing the test audio as a reference optimized audio; determining a target distinctive speech feature corresponding to the reference optimized audio; determining a target operation parameter corresponding to the target distinctive speech feature according to a corresponding relationship between the distinctive speech feature and the operation parameter of the sound sensing device; and adjusting the target operation parameters to optimize the sound sensing equipment. The method is favorable for reducing the debugging cost and simplifying the debugging process.

The invention discloses an intelligent self-service pure tone threshold test method and device and a medium, and relates to the technical field of threshold test, and the method comprises the steps: executing a pure tone threshold test process based on an information gain selection mechanism according to the recognition difficulty level in noise, the matching degree score and a pure tone threshold test starting strategy, the key pressing behavior of the testee is judged in real time in combination with the personal operation rhythm template, the hearing threshold estimation result of each frequency band and the corresponding uncertainty index and behavior event mark are output, and fixed-point deviation correction complementary measurement and weight correction are carried out based on the hearing threshold estimation result of each frequency band, the uncertainty index and the behavior event mark; obtaining a final hearing threshold result and an overall credibility grade; by establishing the candidate test set and introducing the pure tone threshold measurement process based on the information gain selection mechanism, the dynamic adjustment of the test path according to the hearing threshold estimation result and the uncertainty index of each frequency band is realized, and the test efficiency and the result stability are improved.

The invention discloses a high-elasticity amorphous alloy for music box tablets and a preparation method of the high-elasticity amorphous alloy. The amorphous alloy comprises Zr, Ti, Cu, Ni and Be elements. The sum of the atomic percent of all the elements is 100%, and the Zr accounts for 38%-55%, the Ti accounts for 8%-20%, the Cu accounts for 7.5%-15%, the Ni accounts for 5%-10%, and the Be accounts for 18%-30%. The Zr-based amorphous alloy prepared through the method has the low elastic modulus and damping ratio, the high elastic limit and the excellent corrosion resistance, when the Zr-based amorphous alloy is used for music box tablets, the sound key oscillation starting force can be reduced, and matched devices are prevented from being damaged; the allowable deformation of the sound key is improved, and the anti-deformation life is prolonged; vibration loss is reduced, pure timbre is ensured, and the service life of the music box is obviously prolonged; during preparation, the vibration frequency of the sound keys is simulated and optimized through finite elements, the sound sheet structure is designed through CAD, rapid solidification forming is achieved in cooperation with a copper mold suction casting process, the process is simple and convenient, and the yield is high.

The invention relates to a pure tone testing method based on surface sounding music glass, and relates to the technical field of surface sounding music glass testing. The method comprises the following steps: on the basis of data such as size, radian and curvature of the surface sounding music glass, equally dividing a sounding surface of the surface sounding music glass through a grid equally dividing method, and marking a test area; testing the vibration displacement of the plurality of test areas, and recording the vibration displacement of each area; calculating a mean value of the vibration displacement in combination with the vibration displacement of the plurality of test areas, determining the areas with the vibration displacement exceeding the standard in the plurality of test areas, and marking the areas exceeding the standard; and connecting the audio signal scanner, sending sine frequency sweeping signals, respectively testing parameters such as frequency response and distortion of a plurality of standard exceeding areas, evaluating the pure tone performance of the vibration displacement standard exceeding areas, and preliminarily completing the pure tone performance test of the surface sounding music glass. The method has the effect of comprehensively and accurately detecting the pure tone performance of the surface sounding music glass.

Provided is a sound processing method performed by a computer, the method comprising generating a DJ transform spectrogram indicating estimated pure-tone amplitudes for respective frequencies corresponding to natural frequencies of a plurality of springs and a plurality of time points by modeling an oscillation motion of the plurality of springs having different natural frequencies, with respect to an input sound, and calculating the estimated pure-tone amplitudes for the respective natural frequencies; calculating degrees of fundamental frequency suitability based on a moving average of the estimated pure-tone amplitudes or a moving standard deviation of the estimated pure-tone amplitudes with respect to each natural frequency of the DJ transform spectrogram; and extracting the fundamental frequency based on local maximum values of the degrees of fundamental frequency suitability for the respective natural frequencies at each of the plurality of time points.

This patent application discloses a method for constructing a risk prediction system for age-related hearing loss based on metabolomics, belonging to the interdisciplinary field of biomedicine and artificial intelligence. The method first acquires peripheral blood metabolomics data, pure-tone audiometry results, and age information of subjects, and then screens out age-related hearing loss patients with symmetrical hearing loss and healthy controls. Next, a hierarchical screening strategy is used to identify multiple core metabolites related to the age-related hearing loss state itself from massive amounts of data. Subsequently, based on these core metabolites, a predictive model is constructed using machine learning algorithms, and rigorously validated through independent internal and external clinical cohorts. This invention achieves early, accurate, and interpretable risk warning for age-related hearing loss, exhibiting excellent predictive performance.

The present invention discloses a multifunctional calibration device for sound calibration, including an audio data acquisition and playback module, a gain control module, an acoustic signal output module and an MCU control module; and also discloses a control method including: S1, system hardware initialization and reading stored calibration information; S2, judging whether there is a pre-calibration instruction, if so, entering S3, if not, entering S4; S3, entering sensitivity level calibration or frequency point calibration according to the pre-calibration instruction, and entering S4 after the calibration is completed; S4, executing the function corresponding to the project number, including frequency weighting processing, level linear processing, burst processing or repeated burst processing; S5, judging whether there is an instruction to change the project, if not, continue to execute the function corresponding to the project number, if so, execute the function corresponding to the changed project number. The present invention includes multiple frequency points, multiple sound pressure levels and various functions, and can provide burst and repeated burst sound signals on the basis of providing pure tone signals.

The invention discloses an otoacoustic emission instrument probe which is characterized by comprising a probe body, a first shell and a second shell, the first shell is a cylinder, the middle of the first shell is of a hollow structure provided with at least one through hole, one end of the hollow structure and the outer wall of the first shell form a first cavity, the first cavity is connected with the probe body, the other end of the hollow structure and the outer wall of the first shell form a second cavity, and the second cavity is connected with the second shell. An annular groove is formed in the inner wall of the upper end of the second shell. According to the otoacoustic emission instrument probe, a through hole of a first shell provides a fixed installation position for a loudspeaker and a microphone, an annular groove of a second shell provides a fixed installation position for a circuit board, the circuit board and the loudspeaker are connected with the circuit board through a fixed-length wire, internal crosstalk is effectively restrained, a physical isolation barrier is formed by the hole wall of the first shell, and the sound emission effect is improved. And the accuracy of acoustic immittance measurement and pure tone threshold judgment is further ensured.

The invention relates to the technical field of psychoacoustic and electroacoustic measurement, and provides an equal-loudness-level curve calculation method suitable for a plug-in headphone, and the method comprises the steps: firstly, calculating a free field equal-loudness-level curve based on a standard, and deducing an increment function representing a human ear loudness perception growth rate; then, acquiring a pure tone reference equivalent threshold sound pressure level of the plug-in earphone in a blocked ear environment, and realizing full-frequency-point reference data fitting by using an interpolation algorithm; and finally, superposing the loudness increment function on the reference equivalent threshold sound pressure level reference anchor point, thereby constructing an equal loudness level curve suitable for the plug-in earphone. The technical blank that the plug-in earphone lacks an equal-loudness evaluation standard in a blocked ear scene is solved, and an important support and an application basis are provided for application expansion of an equal-loudness-level curve relation.

The present invention relates to sound therapy and personalized tinnitus rehabilitation applications combined with objects placed in the video that meet the new, effective, relatively inexpensive and personalized tinnitus treatment / therapy needs of individuals with tinnitus, characterized in that it comprises a central processor (1) that allows the objects and pure sounds in the video to be provided to the patient simultaneously, software (2) that allows the objects and pure sounds in the video specially created for the patient to be provided at any time and the final product video to be recorded, goggles (3) that enable the visuals created in the software (2) to be transmitted to the patient, headset (4) that allows the patient-specific frequency and intensity of the sounds created in the software (2) to be transmitted to the patient, controller (5) that allows the objects and pure sounds to be provided to the patient synchronously with the headset (3) at the times determined by the user, at the time and frequency determined by the user in the video to be shown to the patient.

The application discloses a noise environment test method and system applied to a pure tone audiometer, and the method comprises the following steps: obtaining an anti-interference noise signal stream through a feedforward microphone embedded in a specific curvature area outside an earmuff; inputting the anti-interference noise signal stream into a noise reduction processing module, combining an original pure tone signal input by the audiometer, and outputting a pure tone reservation type reverse signal; superimposing and synthesizing the pure tone reservation type reverse signal and the original pure tone signal to obtain a high-fidelity synthesized audio signal; performing real-time frequency domain analysis on the high-fidelity synthesized audio signal to generate multi-dimensional quality verification data containing distortion characteristics, response speed and fidelity level; and outputting an environment noise adaptive final hearing threshold result based on the comparison result of the multi-dimensional quality verification data and a preset standard threshold. According to the embodiment of the application, efficient suppression of environmental noise and accurate reservation of pure tone signals can be realized, and the reliability and environmental adaptability of hearing threshold test are improved.

Azasetron or an analog thereof, or a pharmaceutically acceptable salt and / or solvate thereof, for treating severe or profound sudden sensorineural hearing loss (SSNHL) in a subject in need thereof. In particular, azasetron or an analog thereof, or a pharmaceutically acceptable salt and / or solvate thereof, for treating severe or profound SSNHL in a subject suffering from severe or profound SSNHL associated with (i) a hearing threshold at baseline corresponding to a pure tone audiometry (PTA) at baseline equal to or greater than 70 dB, preferably equal to or greater than 80 dB, more preferably equal to or greater than 90 dB; (ii) a hearing loss at baseline equal to or greater than 91 dB corresponding to a profound hearing loss according to the American Speech-Language-Hearing Association (ASHA) classification; (iii) a hearing loss at baseline affecting frequencies equal to or lower than 2000 Hz; and / or (iv) the presence of vertigo at baseline.

The invention provides a noise deafness early-stage self-test system, and relates to the medical field, the noise deafness early-stage self-test system comprises a housing, the front surface of the housing is provided with a display screen used for displaying system content and an operation key group used for operating an system, and the side edge of the housing is provided with an earphone interface. According to the invention, the portable self-test at the early stage of noise deafness is realized, the problem of no targeted portable equipment is solved, a self-testee is helped to find the problem in time at the damage stage (reversible stage) at the frequency band of 3000Hz-6000Hz, the development of permanent noise deafness is avoided, the self-testee does not need to go back and forth to professional organizations (the traffic and time cost is saved), the single-time self-test cost is low, and based on the pure tone audiometry principle, the self-test efficiency is greatly improved. The error between a high-frequency test of a key frequency band and a detection result of a professional institution is less than or equal to 3dB, the precision requirement of early damage identification is met, the pure tone signal strength is limited to be 30dB-85dB, the battery has multiple protections, and the full-sound-insulation earmuff is made of a medical-grade material, so that potential safety hazards are avoided.

The invention relates to an audio-based interaction method and device, equipment and a storage medium, and relates to the technical field of multimedia. According to the method, the recognition result is upgraded from pure tone source judgment to deep understanding of complete information and intention of the audio, and the degree parameter is output to indicate the expression degree of each audio feature in the audio, so that the fine degree of the recognition result is improved; moreover, multiple audio feature templates corresponding to the multiple audio features and the degree parameter of each audio feature template are provided, and on the basis, a user can adjust the degree parameter of any audio feature of the audio and can select any audio feature template to be mixed with the multiple audio features of the audio to generate a new audio. Therefore, the user can finely adjust the audio features of the audio and can integrate other audio features, so that the audio meeting the personalized requirements of the user is generated, the user does not need to perform excessive operations, and the quality of the generated audio is improved on the basis of ensuring the generation efficiency.

The application relates to a noise adjustment method of an audiometer and a noise generator thereof, comprising the following steps: constructing a noise database, the types of the noise including simulated noise, random noise and mixed noise; acquiring frequency range and amplitude data when pure tone is output, and generating a preselected scheme of masking noise adapted to the pure tone from the corresponding type according to an input instruction, the preselected scheme including the duration, the expected frequency range and the expected amplitude of the selected masking noise; superimposing and outputting the selected masking noise and the pure tone, and acquiring the mixed tone segment signal again at the eardrum, and generating a waveform spectrum through time-frequency conversion; based on the waveform spectrum, removing the waveform spectrum calculated according to the frequency range and the amplitude data of the pure tone, and recalculating the actual frequency range and the actual amplitude of the masking noise, and adjusting the frequency range and the amplitude of the masking noise output according to the actual frequency range and the actual amplitude, so that the actual frequency range and the actual amplitude are infinitely close to the expected frequency range and the expected amplitude respectively.

The invention discloses a subjective and objective evaluation method for order noise of a new energy vehicle. The method is realized through the following steps: building a test environment and arranging acoustic sensors, setting transient and steady working conditions, and collecting noise data of four key positions in the vehicle; parameters such as linearity and pure tone highlight ratio are calculated, and scoring indexes are extracted; and finally, establishing a 10-person review group to carry out 7-level subjective scoring, and carrying out weighted fusion on subjective and objective scores according to working condition characteristics to obtain a comprehensive evaluation result. The method breaks through subjective and objective evaluation split states, covers all working conditions, improves the comprehensiveness and accuracy of order noise evaluation, can accurately recognize noise risk points, reduces the after-sales cost, and is suitable for systematic evaluation of new energy vehicle order noise.

The embodiment relates to systems and methods structured to deliver acoustic and visual energies to be received by living beings, and, more particularly the energies received by living beings can be configured, composed, and / or designed to be delivered to address a plurality of conditions including enjoyment. The energies can be deployed by using various algorithms and can include tones, tuning, rhythms, sound waves, harmonies, melodies, chord progression and instrument arrangement to deliver the energies preferentially to different parts of a living being's body, such as but not limited to, right and / or left ears. The algorithms can include variations in Pythagorean tuning and just and pure intonation, monaural and binaural beats for brain wave entrainment, Solfeggio Frequencies, Fibonacci Sequencing, and / or carrier waves and isochronic tones.

The invention relates to the field of noise detection technology, in particular to a swept frequency equalization threshold noise test method for rapid detection of cochlear dead zones, which can measure continuous dead zone results in a large range, solve the problem of isolated test frequency and easy omission of dead zones, and can accurately detect the edge frequency of the dead zone, continuously play the equalization threshold noise, and realize the feedback of hearing or not hearing by continuously pressing or releasing a button, when the subject presses the button, the intensity of the pure tone continuously decreases; when the subject releases the button, the intensity of the pure tone continuously increases, and a sawtooth curve whose hearing threshold constantly fluctuates when masked by the equalization threshold noise is obtained, and the midpoints of each segment of the sawtooth curve are connected to obtain a test result in one direction, and the signal-to-noise ratio of the hearing threshold after masking by the equalization threshold noise is greater than 10dB, and the area where the hearing threshold after masking is 10dB higher than the hearing threshold before masking is determined as the dead zone, and the frequency corresponding to the end point of the curve where the dead zone is located is the edge frequency of the dead zone.

The pure tone sounder comprises a base, the upper end of the base is fixedly connected with a supporting frame, the base and the supporting frame are jointly provided with a stabilizing mechanism, the upper end of the supporting frame is fixedly connected with a fixing frame, the horizontal portion of the fixing frame is rotationally connected with a stud, and the stud is fixedly connected with a fixing base. The stud makes contact with the horizontal part of the supporting frame, and the outer side of the stud is fixedly sleeved with a first bevel gear. The invention relates to a pure tone sounder for hearing detection, which has the function of assisting in stabilizing the integral structure of the pure tone sounder so as to avoid the problem of additional movement of the pure tone sounder, and can adaptively adjust the position of the pure tone sounder so as to improve the use convenience of an operator. And an idle sound transmission earphone can be hooked and fixed for use, so that the stability of the sound transmission earphone is ensured.

The invention discloses a voice backdoor attack method based on phoneme recognition. The method comprises the following steps: carrying out phoneme recognition on all to-be-trained voice samples, and extracting a corresponding phoneme table of each voice sample; self-adaptive amplitude enhancement is carried out on phonemes needing to be enhanced in the voice sample; the frequency intensity of the voice data set is calculated, a frequency initialization pure tone trigger with the lowest frequency intensity is selected, the trigger is implanted into the voice sample, and a label is modified into a target label; the voiced voice samples are mixed into the benign data set in proportion to obtain a voiced data set, and a victim model trained by using the voiced data set is provided with an implanted backdoor. According to the method, on the basis of ensuring the concealment of the trigger, the effectiveness of the backdoor attack of the speech recognition model is improved, and the method has a small influence on the accuracy of benign sample recognition.

The invention relates to a tinnitus intervention method, device and equipment based on a brain-computer interface, and relates to the technical field of tinnitus digital intervention, and the method comprises the steps: processing a pure tone audiometry result of a target user through a matching method, and obtaining input parameters such as tinnitus frequency / loudness; and performing real-time dynamic processing on the original audio in the buffer area to generate an audio block, performing band-pass filtering in combination with the tinnitus input parameters, and constructing a band-pass / band-stop filter. And introducing key noise by adopting random noise, performing optimal superposition on the noise and an audio block, analyzing signal gain, performing incisura enhancement according to a band elimination filter and the gain based on an incisura / sound channel mode, and generating incisura music. And finally, on the basis of a brain-computer interface, combining the incisura music with the neural feedback information, and carrying out comprehensive tinnitus intervention, so that the incisura music is adjusted, and a tinnitus intervention result is determined. Therefore, the brain-computer interface and the incisura music therapy are combined to realize advantage complementation, so that the tinnitus digital intervention effect is improved.