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35 results about "Decibel" patented technology

The decibel (symbol: dB) is a unit of measurement used to express the ratio of one value of a power or field quantity to another, on a logarithmic scale, the logarithmic quantity being called the power level or field level, respectively. It can be used to express a change in value (e.g., +1 dB or −1 dB) or an absolute value. In the latter case, it expresses the ratio of a value to a fixed reference value; when used in this way, a suffix that indicates the reference value is often appended to the decibel symbol. For example, if the reference value is 1 volt, then the suffix is "V" (e.g., "20 dBV"), and if the reference value is one milliwatt, then the suffix is "m" (e.g., "20 dBm").

Volume configuration method and device, computer equipment and storage medium

The invention relates to the field of smart televisions, in particular to a volume configuration method and device, computer equipment and a storage medium, and the method comprises the steps: analyzing a standard audio file by using playing equipment of which the volume is to be configured, obtaining a standard audio analysis result, calculating to obtain a correction normal number, and analyzing real-time audio by using the playing equipment. And obtaining a real-time audio analysis result, performing matching in a preset configuration file according to the environmental noise value, and performing volume adjustment on the playing device with the volume to be configured. According to the volume configuration method, a standard audio analysis result is obtained through analysis of a playing device with the volume to be configured, a correction normal number is calculated in combination with a preset decibel, then an audio recorded by a recording device in real time is obtained and analyzed by the playing device, finally, a volume configuration scheme is matched in a preset configuration file according to the value, and the volume of the playing device is adjusted. Therefore, the audio file recorded by the recording equipment is analyzed to obtain real noise, and the volume of the playing equipment is automatically adjusted.
Owner:SHENZHEN COOCAA NETWORK TECH CO LTD

Vacuum real-time leakage detection system and method for pipe bundle of direct air cooling island of thermal power plant

This application relates to a vacuum real-time leak detection system and method for tube bundles in direct air-cooled islands of thermal power plants. The system includes: a leak acoustic wave acquisition module installed at the connection points between the finned tubes of the air-cooled island radiator and the steam distribution pipe, and between the leaking finned tubes of the air-cooled island radiator and the condensate collection pipe, for acquiring acoustic wave signals from the tube bundles of the direct air-cooled island; a signal processing module for amplifying, filtering, and converting the leak acoustic wave signals; a judgment module for comparing the decibel value of the processed acoustic wave signal with a preset threshold; and a leak detection module for determining the leak area of ​​the leaking tube bundle based on the leak status and the address code of the leaking tube bundle. This solves the problems of related technologies, such as complex operation, long processing time, inability to monitor in real time, and difficulty in meeting the needs of continuous operation in thermal power plants.
Owner:GUODIAN SCI & TECH RES INST

Sound box volume intelligent adjustment method and device combining environmental noise monitoring and voice recognition

The present application relates to a sound box volume intelligent adjustment method combining environmental noise monitoring and voice recognition, comprising the following: obtaining a first decibel value and a second decibel value of adjacent sampling intervals without human voice interference respectively; calculating the difference between the second decibel value and the first decibel value to obtain a decibel change value; judging the environmental noise change based on the decibel change value, if the environmental noise change is larger or smaller, triggering the voice recognition function, obtaining the feedback voice of the user and based on this to adaptively adjust the sound box volume. The present application uses the difference between the second decibel value and the first decibel value without human voice interference to approximately estimate the environmental noise change, when the environmental noise changes, the voice recognition function is triggered, the voice interaction with the user is carried out, and the sound box volume is adaptively adjusted, on the one hand, the volume can be adjusted in time when the noise fluctuates to adapt to the user's listening to the sound box content, on the other hand, the interaction with the user increases the user's experience.
Owner:FOSHAN CHANSTEK SOUND EQUIP CO LTD

Power cable withstand voltage test method

The invention relates to the field of cable voltage withstanding testing, in particular to a power cable voltage withstanding testing method, which comprises the following steps of: defining a scanning interval in combination with total capacitance of a cable and historical resonance data of the same type of cable in a three-stage resonance point searching mode of coarse scanning positioning of a candidate interval, fine scanning of refined data and secondary interpolation calibration; the problem of low efficiency of all-interval precise scanning is solved, and the defect of insufficient precision of empirical estimation can also be made up. According to the invention, the voltage compensation coefficient and the boost rate compensation value are respectively calculated based on the ground temperature and humidity environmental parameters of the test site, the dynamic correction of the test voltage and the boost rate is realized, and the influence of temperature and humidity on the cable insulation dielectric strength can be eliminated. According to the method, a mode of correlation analysis of discharge sound and current data is constructed in a boost stage, a defect area is positioned through a decibel attenuation trend, insulation abnormity is verified in combination with current fluctuation correlation, and a defect range is accurately narrowed to a single monitoring point interval or an adjacent monitoring point interval.
Owner:SHAANXI XIECHENG TESTING TECH CO LTD

Methods, equipment and media for reducing noise during water pumping

This invention relates to a method, equipment, and medium for reducing noise during water pumping, and particularly to the field of water pumping noise reduction technology. For each pumping operation to be performed, the current air pressure data generated in the inlet hose when the water pump is operating at a preset power is collected. Based on the current air pressure data, the current decibel value of the sound generated by the inlet hose disturbing the water source when the water pump is operating at the preset power is determined. It is then determined whether the current decibel value meets a preset requirement. If the current decibel value does not meet the preset requirement, the current decibel value is adjusted and reduced to the air pressure change value required to meet the preset requirement. The inlet hose is pressurized according to the air pressure change value, and the disturbance of the inlet hose is reduced, so that the current decibel value meets the preset requirement. This prevents the inlet hose from disturbing or shaking in the water source area, avoiding noise generated by the inlet hose shaking in the water source area, thus achieving the noise reduction function.
Owner:SHENZHEN DEYUXIN TECH CO LTD

A method for measuring a crystallization state of a film layer, and related devices and storage medium

The application discloses a kind of film layer crystallization state measurement method and related device, storage medium, the method includes: by pumping light to the material to be measured excitation ultrasound, again emit probe light to the same point position and carry out ultrasound detection, obtain current detection signal;If the signal-to-noise ratio of current detection signal is greater than decibel threshold value, from the acoustic impedance based on detection signal analysis abnormal crystallization region, indicate the degree of abnormal crystallization of the material to be measured;If the signal-to-noise ratio of current detection signal is not greater than decibel threshold value, based on current detection signal analysis the acoustic velocity and acoustic impedance of the material to be measured;The Young's modulus of the material to be measured is calculated using the acoustic velocity and acoustic impedance of the material to be measured, and is output as the quantitative index of the crystallization state of the material to be measured;If the acoustic velocity of the material to be measured cannot be analyzed, the amplitude of two echo signals is obtained based on current detection signal, and the attenuation parameter of echo is calculated using the ratio of the amplitude of two echo signals, and is output as the quantitative index of the crystallization state of the material to be measured.
Owner:GUANGZHOU ZHONGKE FEICE TECHNOLOGY CO LTD

Audio playback control method and control apparatus

ActiveCN116208899BElectric megaphonesSound source separationEnvironmental noise
The application discloses an audio playing control method, comprising: acquiring first audio data; acquiring an environmental noise decibel value; performing sound source separation on the first audio data to obtain a plurality of second audio data with different frequency structures; adjusting the volume of the plurality of second audio data according to the environmental noise decibel value; performing audio mixing on the second audio data after volume adjustment; and adjusting the playing volume of the second audio data after audio mixing according to the environmental noise decibel value. The audio playing control method provided by the application can realize sound source separation of playing audio data, and adjust the volume of, for example, target sound source data and environmental sound source data according to the environmental noise condition, thereby improving the automatic adjustment capability of the system. The volume of sound of different sound sources is adjusted, so that sound containing substantial content such as a human voice sound source is highlighted in a noisy environment, and all kinds of sound sources are balanced in a quiet environment, giving people a sense of stability and improving the auditory experience.
Owner:SHENZHEN HONGHE INNOVATION INFORMATION TECH CO LTD

Vocal optimization methods, devices, microphone assemblies, and storage media

This invention relates to the field of microphone technology and discloses a voice optimization method, device, microphone array, and storage medium. The method includes: acquiring noise data of the environment where a target user is located; adjusting the distance between the target user and the main microphone when the decibel value of the noise data is greater than a preset sound decibel threshold; picking up voice data of the sound source location using the main microphone after the distance adjustment, and optimizing the voice data. By means of the above method, when the decibel value of the noise data in the environment where the target user is located is greater than the preset sound decibel threshold, the distance between the target user and the main microphone is adjusted so that the adjusted main microphone is closer to the sound source, and then the voice data picked up by the main microphone is optimized, thereby effectively reducing the impact of ambient noise on the voice data and improving the clarity of the recorded voice.
Owner:NANJING GOERTEK ACOUSTICS TECH CO LTD

Method, apparatus, device and medium for realizing conversion of decibel value of audio to linear value

The method, apparatus, device, and medium for converting linear values ​​of audio to decibel values ​​provided in this disclosure include: determining an initial target conversion relationship between decibel values ​​and linear values ​​based on an initial conversion relationship between decibel values ​​and linear values, and a conversion relationship between commonly used exponential functions and natural exponential functions; determining an initial range of exponential values ​​for the exponential function of the initial target conversion relationship based on the standard range of decibel values ​​for audio, and converting the initial target conversion relationship according to the correspondence between the initial range and the preset range of the coordinate rotation digital calculation algorithm to obtain the target conversion relationship; and determining the linear value based on the coordinate rotation digital calculation algorithm and the target conversion relationship. In the process of calculating the audio value based on the decibel value of audio, the coordinate rotation digital calculation algorithm can be used, which has high accuracy and low resource consumption.
Owner:ZHUHAI NANXIN SEMICON TECH CO LTD

Method for identifying flaw detection sensitivity change by ultrasonic waves through interface waves

The invention discloses a method for identifying flaw detection sensitivity change by ultrasonic waves through interface waves, and belongs to the technical field of nondestructive detection.The method comprises the steps that firstly, the initial reference height of primary interface waves is set, and the real-time height of the primary interface waves of multiple channels is collected in real time in the flaw detection process; and calculating the sensitivity attenuation of each channel by using a decibel difference algorithm. Furthermore, through statistical analysis of the arithmetic mean value and the standard deviation of the multichannel data, the attenuation amount and a preset threshold value are subjected to logic comparison: when the mean value exceeds the standard and the consistency is good, it is judged that systematic coupling deterioration occurs, and overall cleaning is triggered; when the consistency is poor due to attenuation of a specific channel, a local fault is judged, and an abnormal probe is positioned. According to the invention, sensitivity monitoring is converted from off-line verification to on-line real-time monitoring, the coupling water quality problem and the single probe fault can be accurately distinguished, the risk of batch leak detection is effectively avoided, and the quality control level and the production efficiency of flaw detection operation are improved.
Owner:JIANGSU CHANGBAO PLS STEEL TUBE

Method, apparatus, device and medium for realizing linear value to decibel value conversion of audio

PendingCN122173733AComplex mathematical operationsCommon logarithmBinary multiplier
The method, apparatus, device, and medium for converting linear values ​​of audio to decibel values ​​provided in this disclosure include: determining a target conversion relationship between a natural logarithmic linear value and a decibel value based on an initial conversion relationship between linear values ​​and decibel values ​​and a conversion relationship between the natural logarithm and a common logarithm; determining the natural logarithmic linear value and a linear value in the target conversion relationship based on a coordinate rotation digital calculation algorithm; and determining the decibel value based on the correspondence between the linear value in the target conversion relationship and a preset linear value. In the process of calculating the decibel value of audio based on the linear values ​​of audio, the calculation of the natural logarithmic linear value does not require the use of a multiplier; it can be achieved through a coordinate rotation digital calculation algorithm, which offers high accuracy in calculating the natural logarithmic linear value. Furthermore, the data processing method based on the coordinate rotation digital calculation algorithm can be directly implemented through hardware (digital circuits), resulting in lower resource consumption.
Owner:ZHUHAI NANXIN SEMICON TECH CO LTD

Method of adaptive inverse tonal audibility level screening

PendingUS20260130608A1AudiometeringSensorsOtolaryngology/ENTAudiometry test
The present invention relates to medicine, namely to surdology-otorhinolaryngology, and can be used in conducting audiometry for diagnostic purposes during mass preventive examinations of the population. The patient is consistently presented with sound signals in the frequency range: 125-250-500-750-1000-2000-3000-4000-6000-8000-10000-12000-16000 Hz at three tone levels of 5, 10, 20, 35 and 50 dB. At the same time, they start with a 20 dB tone signal. at the same time, they start with a 20 dB tone signal—test 0. If, as a result of the “0” test, the patient replied “There is a signal” at all the presented frequencies, then perform the “−1” test with a 10 dB tone level, if the patient replied “There is a signal” at all the presented frequencies, proceed to the “−2” test with a 5 dB tone level, and if the patient replied “There is a signal” at all the presented frequencies. There is a signal” at all the presented frequencies, then the study is completed and “Excellent audibility” is determined. If, as a result of the “−2” test, the patient receives a response of “No signal” at least one of the frequencies, then the study is completed and “good audibility” is determined. If, as a result of the “−1” test, the response “No signal” is received from the patient at least on one of the frequencies, then the study is completed and the “Hearing norm” is determined; if, as a result of the “0” test, if the response “No signal” is received from the patient at least on one of the frequencies, then the “1” test is performed.” with a tone level of 35 dB; if, as a result of the “1” test, the patient replied “There is a signal” at all the presented frequencies, then the study is completed and a potential “mild hearing impairment” is determined. If, as a result of test “1”, the patient replied “There is no signal” at at least one of the frequencies, then test “2” is performed with a tone level of 50 dB. If, as a result of the “2” test, the patient replied “There is a signal” at all the presented frequencies, then the study is completed and the “average hearing impairment” is determined. If, as a result of the “2” test, the patient replied “There is no signal” at least on one of the frequencies, then the study is completed and a “high hearing impairment” is determined. The method allows for an express hearing assessment in a short time period during mass preventive examinations of the population.
Owner:HEARING REHABILITATION CENT MELFON LTD

Decibel compression point information reporting

This disclosure provides systems, methods, and devices for wireless communication that support compression point information reporting and enhanced power allocation operations. In a first aspect, a method of wireless communication includes receiving a reference signal and transmitting compression point information responsive to the reference signal, where the compression point information is determined based on the reference signal. The method of wireless communication further includes receiving a transmission responsive to the compression point information and in accordance with a power allocation based on the transmission of the compression point information. Other aspects and features are also claimed and described.
Owner:QUALCOMM INC

Method for measuring crystalline state of film layer, related device and storage medium

The invention discloses a method for measuring the crystalline state of a film layer, a related device and a storage medium, and the method comprises the steps: exciting ultrasound to a to-be-measured material through pump light, and then transmitting probe light to the same point location for ultrasonic detection, thereby obtaining a current detection signal; if the signal-to-noise ratio of the current detection signal is greater than the decibel threshold value, analyzing the acoustic impedance of the abnormal crystallization area based on the detection signal, and indicating the abnormal crystallization degree of the to-be-detected material; if the signal-to-noise ratio of the current detection signal is not greater than the decibel threshold, analyzing the sound velocity and acoustic impedance of the to-be-detected material based on the current detection signal; calculating the Young modulus of the to-be-tested material by using the sound velocity and the acoustic impedance of the to-be-tested material, and outputting the Young modulus as a quantitative index of the crystalline state of the to-be-tested material; and if the sound velocity of the to-be-detected material cannot be analyzed, acquiring amplitudes of two echo signals based on the current detection signal, calculating an attenuation parameter of an echo by using a ratio of the amplitudes of the two echo signals, and outputting the attenuation parameter as a quantitative index of the crystalline state of the to-be-detected material.
Owner:GUANGZHOU ZHONGKE FEICE TECHNOLOGY CO LTD

A method, system, storage medium and program for detecting a leakage of a boiler tube of a thermal power plant

The application provides a kind of detection method, system, storage medium and program of power plant furnace tube leakage, relating to thermal power generation automatic control technical field, S10, the decibel signal of real-time acquisition operating unit furnace tube area is generated decibel abnormal characteristic signal A;S20, obtain the multi-source signal of operating unit through DCS system, calculate weighted quotient value K according to multi-source signal and generate flow and power abnormal characteristic signal B;S30, determine that the active power of unit is greater than the minimum load threshold, generate load effective signal C;S40, according to flow and power abnormal characteristic signal B and load effective signal C, execute first logic " and " operation, generate working condition effective signal D.Compared with prior art, it has the following beneficial effects: first, the false alarm rate of boiler furnace tube leakage is reduced from 38% of the traditional method to 8.3%;Second, through modular architecture, fully automated operation is realized, which greatly reduces the manual intervention rate.
Owner:HUBEI ENERGY GRP EZHOU POWER GENERATION CO LTD

Intelligent analgesia method and system based on environmental sound detection

PendingCN121550548ASpeech analysisMedical devicesEnvironmental soundsHuman auditory system
The invention discloses an intelligent analgesia method and system based on environmental sound detection, and the method comprises the following steps: starting an intelligent analgesia instrument body for initialization, and generating a system initialization state data set; a user selects audio data through the terminal and generates an audio selection instruction set; the terminal sends a composite data request and carries out encryption fragmentation processing on the audio data to generate encrypted audio data fragments and verification information; if not, the controller reads the audio data in the local memory; performing continuous sampling, filtering and form conversion on external environment sound to generate an environment sound decibel measured value; adaptive decibel adjustment, frequency band optimization and dynamic range adjustment are carried out based on the environment sound decibel measured value, and a target audio data set is generated; and performing streaming transmission, playing control and visual display on the target audio data set, and receiving audio by a human auditory system to act on a cortical thalamus loop to realize analgesia. The analgesia audio playing can be dynamically adjusted according to the environment sound change.
Owner:ZHANJIANG AIKEDEMI TECHNOLOGY TRADING CO LTD

A load fault detection method, a load fault detection system, and an electronic device.

This invention provides a load fault detection method, a load fault detection system, and an electronic device. The method includes: First, spreading the original signal using a pseudo-random sequence to obtain a driving signal. Since the bandwidth of the pseudo-random sequence is greater than that of the original signal, the signal bandwidth of the driving signal is widened, thereby improving the anti-interference capability of the driving signal. Furthermore, since the amplitude of the pseudo-random sequence is attenuated by a preset decibel compared to the original signal, interference from the pseudo-random sequence to the original signal is avoided. Next, the driving signal is output to the load, and the return signal from the load is acquired. Finally, correlation analysis is performed on the return signal and the pseudo-random sequence to obtain a despread signal, and the energy magnitude of the despread signal is extracted. The fault type of the load is determined based on the energy magnitude of the despread signal. Because the signal-to-noise ratio of the despread signal has a significantly higher gain than that of the driving signal, the accuracy of load detection is greatly improved.
Owner:SUZHOU LINK-IC CO LTD

Anti-interference sound analysis system and method for pig farm

The invention relates to the technical field of information processing, and particularly discloses an anti-interference sound analysis system and method for a pig farm, and the system comprises a sound collection module which is used for collecting sound in the farm in real time, and monitoring whether a decibel value exceeds a sound threshold value or not; the voiceprint analysis module is used for identifying and analyzing live pig sound after receiving the starting instruction; the image recognition module is used for analyzing the collected video image and recognizing whether a dog exists in the image or not; the logic control module is used for triggering the image recognition module to execute a barking recognition mode when a dog exists in the image and a sound decibel value exceeds a threshold value; and if the image recognition module judges that the dog is barking in the barking recognition mode, the logic control module is also used for generating a blocking instruction and pausing the voiceprint analysis module to process the current sound data. According to the technical scheme, under the condition of low cost, interference can be effectively reduced, and the live pig voice recognition reliability is improved.
Owner:国农(重庆)生猪大数据产业发展有限公司

Three-phase asynchronous motor stator winding turn-to-turn short circuit fault diagnosis method

The invention relates to the technical field of motor fault diagnosis, in particular to a three-phase asynchronous motor stator winding turn-to-turn short circuit fault diagnosis method. The method comprises the following steps: synchronously acquiring three-phase stator voltage and current signals, constructing an adaptive filtering model by taking each phase voltage as reference input and each phase current as main input, estimating and eliminating a linear driving component in the current, and obtaining an error signal as a fault feature purification signal; carrying out FFT (Fast Fourier Transform) on the purified signal and normalizing the purified signal in a decibel domain according to a corresponding phase current fundamental wave amplitude; calculating a load rate according to the three-phase current effective value, and dynamically setting a mild early warning threshold value and a severe warning threshold value according to the load rate; and positioning a characteristic frequency point in the normalized frequency spectrum, extracting a spectrum amplitude value, comparing a three-phase maximum value with a threshold value, and outputting a normal, mild or serious turn-to-turn short circuit diagnosis result. The method has high robustness to load fluctuation and power supply disturbance, and is suitable for online monitoring and early warning.
Owner:浙江舜云互联技术有限公司

A method and system for adaptive extraction of generator stator single-phase ground fault signatures

The application discloses a kind of generator stator single-phase ground fault feature self-adaptive extraction methods, including obtaining generator stator single-phase ground fault feature signal data set;Using the fault feature signal data obtained, by continuous minimum tracking algorithm, the noise estimation processing of fault feature is carried out, and the final noise estimation value is obtained;Using the final noise estimation value obtained, different noise decibel intervals are divided, and different noise decibel intervals correspond to different fault feature extraction algorithms;Using the noise decibel interval obtained by division, the algorithm corresponding to the fault feature extraction is selected for different fault feature signals to complete the extraction of fault diagnosis extraction.The application also discloses a system comprising the generator stator single-phase ground fault feature self-adaptive extraction method.The method of the application is accurate in positioning, and the adaptability is improved.
Owner:STATE GRID HUNAN ELECTRIC POWER COMPANY LIMITED +2

Audio recognition method and device, electronic equipment and storage medium

The invention discloses an audio recognition method and device, electronic equipment and a storage medium, and relates to the field of software and platforms or other related technical fields, and the method comprises the steps: collecting audio data, and carrying out the preprocessing of the audio data; calculating a weighted decibel value of the preprocessed audio data, and comparing the weighted decibel value with a decibel threshold to obtain a comparison result; under the condition that the comparison result indicates that the weighted decibel value of the audio data is greater than the decibel threshold value, performing preliminary verification on the audio data to obtain a verification result; and under the condition that the verification result indicates that the audio data passes the preliminary verification, entering an audio identification stage through a double-cache switching mechanism, inputting the audio data into an audio identification model, and outputting an audio identification result. According to the method and the device, the technical problems of low efficiency and high hysteresis of an audio recognition mode based on a fixed high-bit-width precision calculation strategy and serial processing in related technologies are solved.
Owner:CHINA TOWER CO LTD +1

Satellite communication digital signal adaptive amplification method and system based on link perception

The invention relates to the technical field of satellite communication, in particular to a satellite communication digital signal self-adaptive amplification method and system based on link perception. The method comprises the following steps: collecting and analyzing signal-to-noise ratio data fed back by a target terminal and power detection data of a local transmitter, and executing power boundary joint judgment to form a limit saturation status word; analyzing a link quality loss value by using the extreme saturation state word; performing energy spectrum density compensation conversion on the link quality loss value to obtain a bandwidth compression coefficient; performing equal-energy bandwidth compression calculation according to the bandwidth compression coefficient to obtain a rate reduction configuration parameter; and calculating an energy loss decibel value according to the drop rate configuration parameter, and determining a gain compensation coefficient. According to the method, digital-analog cooperative control is implemented under the physical saturation limit of the power amplifier, and the signal power spectral density is improved on the premise that the total transmitting power is constant, so that the hardware transmission limit is broken through in an extremely severe channel to maintain a communication link.
Owner:SICHUAN MINGKEXIN COMM TECH CO LTD

A method of blast noise localization imaging

The application relates to a kind of air blower noise positioning imaging method, by the noise data of the surrounding environment of air blower when not running and running is collected, the noise data of the surrounding environment of air blower when running is screened, the region where the decibel value is highest is taken as non-synchronous measurement area, non-synchronous measurement is carried out to the air blower in operation, the non-synchronous measurement data of air blower in multiple positions is obtained, the non-synchronous measurement data of air blower in multiple positions obtained is preprocessed, multiple non-synchronous measurement data of air blower after preprocessing is obtained, the energy spectrum matrix construction is carried out to the non-synchronous measurement data of air blower after preprocessing obtained, multiple energy spectrum matrices are obtained, then based on the space position of each energy spectrum matrix, diagonalization arrangement is carried out, and the energy matrix to be filled is obtained.
Owner:ZHEJIANG SHANGFENG SPECIAL BLOWER IND CO LTD

Hearing testing system and method

PendingUS20260033749A1AudiometeringSensorsHearing testElectrophonic hearing
The present disclosure provides a hearing testing system and method, the hearing testing system includes a playback module and a detection module. The playback module includes an intensity-level adjustment module connecting to a player for setting the intensity level of a test sound, and the player plays the test sound to a test ear of a user. The test sound includes a plurality of pure tones having different decibels or frequencies. The detection module is in communication with the playback module, and the user generates a single test response corresponding to the plurality of pure tones having different decibels or frequencies. The test response is that the user inputs the number of pure tones heard into the detection module.
Owner:DELTA ELECTRONICS INC(CN)

Smart noise pollution reduction of Bluetooth based devices

According to one embodiment, a method, computer system, and computer program product for reducing volume of a wireless audio device is provided. The embodiment may include monitoring, via a listening device, audible sounds and corresponding sound levels at a first location of an environment; identifying an audible sound at the first location with a corresponding sound level which exceeds a decibel threshold of the environment; creating a list of Bluetooth-enabled (BE) speakers, sorted by decreasing signal strength, discoverable via the listening device; capturing a segment of the audible sound; sending, from the listening device, a volume reduction request to a topmost BE speaker of the list located at a second location of the environment; responsive to receiving, at the listening device, a notification of match from the topmost BE speaker, re-measuring the corresponding sound level; and confirming the corresponding sound level is compliant with the decibel threshold.
Owner:INTERNATIONAL BUSINESS MACHINE CORPORATION

A noise detection method and device of an air conditioner, the air conditioner and a storage medium

ActiveCN116907030BNoise detectionNoise
This invention provides a method, apparatus, air conditioner, and storage medium for detecting noise in an air conditioner. The noise detection method includes: acquiring the decibel value of the outdoor unit's sound during operation after the air conditioner is running; determining the magnitude of the sound decibel value and a first decibel threshold; calculating the average sound decibel value of multiple acquired sound decibel values ​​within a time period if the sound decibel value is greater than or equal to the first decibel threshold; determining whether the outdoor unit is operating abnormally based on the comparison result between the average sound decibel value and the first decibel threshold; and issuing an abnormality indication signal if the outdoor unit is determined to be operating abnormally. This invention solves the technical problem of low accuracy in existing air conditioner noise detection methods.
Owner:NINGBO AUX ELECTRIC CO LTD +1

Ultrasonic flaw detection sensitivity verification method based on characteristics of steel plate

The invention belongs to the technical field of flaw detection, and discloses an ultrasonic flaw detection sensitivity verification method based on characteristics of a steel plate. According to the ultrasonic flaw detection sensitivity verification method based on the characteristics of the steel plate, the characteristic reflector of the to-be-detected steel plate is used as a verification carrier, an additional test block matched with parameters of the steel plate does not need to be arranged or replaced, and an adaptive probe and a connecting line do not need to be synchronously adjusted; in addition, only one-time sensitivity calculation and verification need to be completed for a single to-be-detected steel plate, the links of test block replacement, component adjustment and repeated verification are reduced, and therefore the detection efficiency is improved. Meanwhile, only the initial gain value corresponding to the reference echo of the characteristic reflector needs to be recorded, the flaw detection sensitivity is obtained by calculating the superposition decibel difference through a formula subsequently, parameters such as the probe angle and the detector gain do not need to be finely adjusted for many times, the parameter fine adjustment frequency is reduced, and the error risk is reduced.
Owner:JIANGSU SHAGANG STEEL CO LTD +1

Method, device and equipment for light control of intelligent cockpit and storage medium

The application discloses a method and device for light control of an intelligent cockpit, equipment and a storage medium. The method comprises the following steps: acquiring audio information of music played in the intelligent cockpit, and detecting a decibel value of a user at each seat in the intelligent cockpit in real time; determining a music melody of the music played based on the audio information, and adjusting a playing volume of each sound in the intelligent cockpit based on the decibel value; and adjusting a flickering mode of each target lamp in the intelligent cockpit based on the music melody and the playing volume, wherein the flickering mode is determined based on light brightness, light color and flickering frequency. In the application, the music melody and the playing volume of the music played are determined to distinguish between users who need a quiet space and users who are enjoying themselves, and the light brightness, light color and flickering frequency of the target lamp are controlled according to the music melody and the playing volume to provide different light modes for different users, meet the needs of different users and improve the experience of the users.
Owner:JINTU COMPUTING TECH (SHENZHEN) CO LTD

Counter behavior detection method, device and equipment and medium

The invention discloses a counter behavior detection method and device, equipment and a medium. The method comprises the following steps: after a to-be-detected video and a to-be-detected audio are obtained, determining an action key point sequence, a dialogue text, movement information and decibel information of a target counter; determining the probability that various preset actions occur in the target counter; determining the probability of occurrence of each type of preset interaction state in the target counter; detecting whether the occurrence probability of each type of safety abnormal behavior in the target counter is greater than the safety threshold value of each type of safety abnormal behavior; and when it is detected that the probability that the target safety abnormal behavior occurs at the target counter is greater than a safety threshold, determining that the target safety abnormal behavior occurs at the target counter, and providing alarm information for a monitoring user. According to the embodiment of the invention, whether the safety abnormal behavior occurs in the counter or not can be automatically, comprehensively and accurately detected based on the multi-dimensional information related to the business personnel and the customers at the counter.
Owner:INDUSTRIAL AND COMMERCIAL BANK OF CHINA

Real-time audio analysis and diagnosis method for inspection process of continuous annealing furnace

The invention discloses a real-time audio analysis and diagnosis method for the inspection process of a continuous annealing furnace. The method comprises the following steps: S1, waiting for an audio file address of rotary equipment to be transmitted into a text file of an audio file storage path; s2, reading an audio file address; s3, acquiring audio file information; s4, performing A weighting on the audio data in the audio file; s5, calculating the total sound pressure level decibel of the audio data weighted by A in each time period; s6, carrying out short-time Fourier time-frequency analysis on the audio data weighted by A to obtain amplitudes at all moments and frequencies; s7, calculating 1 / 3 octave of the audio data weighted by A, and obtaining a sound pressure level mean square value in each octave; s8, storing analysis and diagnosis results of the steps S5-S7; and S9, emptying the text file for storing the audio file path. According to the invention, the sound data is analyzed and diagnosed in real time, the diagnosis result is stored in real time, and the real-time performance and automation of furnace area equipment monitoring are realized.
Owner:BAOSTEEL NIPPON STEEL AUTO SHEET CO LTD