26 results about "Audio analyzer" patented technology

The invention relates to the technical field of audio equipment testing, and discloses a frequency response testing method, in the method, an upper computer can compare a frequency response curve, generated by an audio analyzer, of audio equipment with a standard frequency response curve, and whether the waveform of the frequency response curve is consistent with the waveform of the standard frequency response curve or not can be judged through comparison. If the frequency response curve is inconsistent with the standard frequency response curve, the sound effect of the audio equipment is not good, the PEQ parameter of the audio equipment needs to be further adjusted according to the comparison result of the frequency response curve and the standard frequency response curve, and the audio equipment can continue to carry out the frequency response test based on the adjusted audio parameter. Therefore, in the frequency response test process of the audio equipment, the upper computer can automatically adjust the PEQ parameter of the audio equipment, a tester does not need to manually adjust the PEQ parameter, and the time consumption of the frequency response test of the audio equipment is shortened. Therefore, the frequency response test efficiency can be improved. The technical effect of the method is explained. The invention also discloses a frequency response test device and equipment, and a storage medium.

The invention discloses a vehicle-mounted audio performance testing method, system and device and a storage medium, and relates to the technical field of automatic testing, and the method comprises the steps: an upper computer sends a parameter setting instruction to a signal generator, and enables the signal generator to generate and output a radio frequency signal to a to-be-tested model machine; meanwhile, an ADB instruction is sent to the prototype, the prototype is controlled to respond to the radio frequency signal to execute function operation, and an audio signal is generated and output. The upper computer sends a control instruction to the audio analyzer, so that the audio analyzer receives the audio signal and measures the audio signal to obtain a measurement parameter; and the upper computer reads the parameter, executes judgment and control based on a power measurement result, adjusts the volume of the prototype through an ADB instruction until the output power reaches a preset target power, and finally obtains and records a distortion degree value under the target power as a performance measurement parameter. According to the scheme, the signal generator, the to-be-tested prototype and the audio analyzer are integrally controlled through the upper computer, the automatic vehicle-mounted audio performance test process is achieved, the test complexity is effectively reduced, and the measurement efficiency is improved.

The embodiment of the utility model provides loudness testing equipment of a recorder. Relates to the testing field. The loudness testing equipment of the recorder comprises a sound production device, a sound receiving device and processing equipment, the sound production device comprises an audio analyzer and an artificial mouth, and the audio analyzer is connected with the artificial mouth; the sound receiving device comprises a microphone and a sound card, the microphone is connected with the sound card, and the sound card is connected with the processing equipment; the audio analyzer is used for controlling the artificial mouth to play a first sound signal, the recorder is used for collecting and processing the first sound signal to obtain a second sound signal and playing the second sound signal, and the microphone is used for collecting and processing the second sound signal to obtain a third sound signal and sending the third sound signal to the processing equipment through the sound card; and the processing equipment is used for determining a loudness test result of the recorder according to the third sound signal. And the accuracy of the loudness test of the recorder is improved.

The utility model provides an anti-interference power supply for an audio analyzer, which relates to the technical field of audio analyzers, and comprises an anti-interference power supply shell, a front panel is detachably connected to the front surface of the anti-interference power supply shell, a built-in mainboard is arranged on the inner wall of the anti-interference power supply shell, and mainboard mounting buckle seats are fixed at the corners of the bottom of the built-in mainboard. A buckle limiting groove is formed in the inner wall of the anti-interference power source shell, a first limiting shaft and a second limiting shaft are arranged in the buckle limiting groove, first sliding blocks are fixed to the two sides of the first limiting shaft and slide on the inner wall of the buckle limiting groove, and first springs are fixed to the two sides of each first sliding block. Second sliding blocks are fixed to the two sides of the second limiting shaft and slide on the inner wall of the buckle limiting groove, second springs are fixed to the two sides of each second sliding block, and the other ends of the second springs are fixed to the inner wall of the buckle limiting groove.

This utility model discloses an acoustic testing system for a directional sound-emitting device, including an audio analyzer, an audio processing unit, a power amplifier, a transformer unit, a DC power supply, and a pickup unit. The audio analyzer provides audio, which is then processed as a digital audio signal by the audio processing unit. The processed audio is amplified by the power amplifier, and after exiting the power amplifier, it is amplified again by the transformer. With the DC bias provided by the DC power supply, it is then connected to the directional sound-emitting device under test. The sound emitted by the directional sound-emitting device is received by the pickup unit and returned to the audio analyzer, which displays the frequency response and distortion curves. This utility model provides a novel acoustic testing platform that enables rapid testing of the acoustic performance of directional sound-emitting devices.

The invention discloses audio equipment operation monitoring equipment and a use method thereof, and the equipment comprises a housing, a monitoring assembly used for monitoring audio equipment, and a supporting assembly used for supporting the housing. The monitoring assembly comprises a signal processing module, a multi-channel signal acquisition module, an analog-to-digital conversion module, a synchronization module, a storage module, a power supply module, an alarm module, a communication module and a touch control chip. The multi-channel signal acquisition module is composed of an acquisition chip, an amplifier and a filter. Through cooperation of the multichannel signal acquisition module, the high-precision ADC chip and the self-adaptive impedance matching circuit, synchronous high-precision acquisition of multichannel audio signals is realized, the accuracy and stability of signal acquisition are improved, the signal processing module adopts a dual-core DSP + FPGA architecture, a real-time Fourier transform engine is built in, and the real-time Fourier transform engine is built in the signal processing module. Complex audio signals can be rapidly processed, the analysis requirement of high real-time performance is met, and the problems that a traditional audio analyzer is complex in operation and single in function are effectively solved.

This application discloses a microphone testing device and method, relating to the field of microphone testing, and more particularly, to the testing of microphone arrays for artificial intelligence speakers. A specific implementation scheme is as follows: the microphone testing device includes an audio analyzer, a mute box, and a light source disposed within the mute box; the mute box is used to house a micro-electromechanical system (MEMS) microphone array to be tested; the light source and the MEMS microphone array are disposed relative to each other; and an audio analyzer is connected to the MEMS microphone array, the audio analyzer being used to obtain the audio signal output by the MEMS microphone array and to display the spectral information of the audio signal. Embodiments of this application contribute to improved microphone design and product quality.

The invention relates to a method and a system for processing communication abnormity of vehicle-mounted power amplifier test software equipment, and belongs to the technical field of data processing. Communication and operation between each sub-module and the vehicle-mounted power amplifier test software main module are carried out through independent circulation; the sub-module comprises an audio generator module, a power supply module, a digital multimeter module and an audio analyzer module. Information is transmitted between the sub-modules and the vehicle-mounted power amplifier test software main module through a message queue mechanism, and different execution periods are set for different modules. Through the modularized architecture, each device operates independently, and communication is carried out through a message queue mechanism, so that the mutual dependence among the modules is reduced, and when the communication is abnormal, other modules can still work normally, and the stable operation of the system is ensured.

A data processing device including: a first audio analyzer that extracts, from audio data of a music piece including a first part and a second part that are acoustically separable from each other, audio data of the first part; a second audio analyzer that generates, from the audio data of the music piece, data of a unit sound of the second part; a third audio analyzer that generates, from the audio data of the music piece, data indicating a sounding position of the second part; a master tempo processor that performs master tempo processing on audio data including at least the first part; and a mixing processor that generates audio data in which the audio data of the first part subjected to the master tempo processing is mixed with audio data of the second part, the audio data of the second part being configured by relocating a sound of the second part.

The utility model provides an audio analyzer assembly structure, and relates to the technical field of audio analyzer assembly, the audio analyzer assembly structure comprises a main housing, the top ends of the two sides of the main housing are provided with pad grooves, and the pad grooves are fixedly provided with curved edge plates. Although a part of weight can be shared, the equipment is still inevitable to shake in the carrying process due to the fact that the walking speed, the force exerting direction and the like are difficult to be completely synchronized, the risk of equipment damage is greatly increased due to the unstable state, and especially for the design of the handle, if stress is uneven or accidental collision occurs in the carrying process, the equipment cannot be damaged. At present, the connection part of the handle and the equipment main body is easily broken, or more seriously, the deformation of the metal box body is directly caused, and once the situation occurs, the appearance integrity of the equipment is influenced, and more importantly, the precision structure in the equipment is damaged, and the test performance and accuracy of the equipment are influenced.

A conduction safety margin test evaluation method for communication equipment with an antenna tuning structure relates to the technical field of electromagnetic compatibility test, and specifically comprises the following steps: S1, the communication equipment autonomously selects a working frequency; s2, selecting a signal source of a proper model as simulation equipment according to the working frequency, adopting an antenna consistent with the model of the accompanying test communication equipment as a radiation antenna, disconnecting the tested communication equipment and the accompanying test communication equipment under the condition of ensuring a far field, simulating a communication signal of the accompanying test communication equipment through a method of loading the radiation antenna by the signal source, establishing a normal connection working state between the analog signal and the tested communication equipment; s3, loading an audio analyzer or an error detector at the tested equipment end; s4, carrying out a conduction safety margin test according to a conduction safety margin test method specified in the standard; according to the invention, the audio analyzer or the bit-error tester is adopted, so that the accuracy, repeatability and test efficiency of test results are improved under the condition that human subjective factors are reduced to the greatest extent.

The invention belongs to the technical field of intelligent sound box acoustic detection, and particularly relates to an intelligent sound box acoustic detection device which comprises a silencing shell, a base is fixedly connected to the lower portion of the silencing shell, a sealing door is slidably connected to the surface of the silencing shell, and a fixing assembly used for fixing a square sound box is arranged in the silencing shell; the fixing assembly comprises a first telescopic cylinder, a hinge plate is hinged to the upper portion of the first telescopic cylinder through a hinge rod, and through matched movement of the adjusting assembly, the auxiliary assembly and the matching assembly, the position of the square sound box and the orientation of the square sound box during sound production can be adjusted; the square sound box can make sounds at various positions and in various directions, the audio analyzer can be adjusted to accurately receive the sounds made by the square sound box at various positions and in various directions, the accuracy of acoustic detection of the square sound box can be effectively improved, and the detection range is wide.

The embodiment of the invention provides a cross-language voice conversion method and system, electronic equipment and a storage medium, and belongs to the technical field of voice processing. The method comprises the following steps: acquiring source audio data and target audio data; inputting the source audio data and the target audio data into a pre-trained cross-language voice conversion model; performing spectrum feature analysis on the source audio data and the target audio data through an audio analyzer to respectively obtain source spectrum feature information and target spectrum feature information; performing human voice feature elimination processing on the source spectrum feature information through a content encoder to obtain target content feature information; performing conversion feature extraction processing on the target spectrum feature information through a speaker encoder to obtain target conversion feature information; and performing cross-language voice generation based on the target content feature information and the target conversion feature information through a voice generator to obtain target conversion voice. According to the embodiment of the invention, the conversion voice with a better effect can be obtained under the cross-language condition.

The utility model belongs to the technical field of voice interaction tests, and particularly relates to an adjustable microphone support for voice interaction tests, which comprises an electric push rod. The output end of the electric push rod is fixedly connected with a placing table; a turntable main body is mounted at the top of the placement table; control buttons are mounted on the side surface of the turntable main body; the output end of the turntable body is rotationally connected with a turntable; an audio analyzer is mounted at the top of the turntable; the input end of the audio analyzer is provided with an audio detection end; the top of the turntable is fixedly connected with a mobile phone bracket; in the working process, real-time monitoring and calibration of the sound pressure level are achieved through the arrangement of the audio analyzer, meanwhile, after the rotary table is arranged, the rotary table is rotated, different angles are simulated for monitoring, then the preciseness and comprehensiveness of testing are improved, and errors in the testing process are reduced.

The utility model provides a debugging device for Bluetooth earphone production, which comprises an operation table, a computer is mounted at the top of the operation table, an audio analyzer and a power amplifier are mounted on the inner side of the operation table, a first support mounted at the top of the operation table is arranged on one side of the computer, and a second support mounted at the bottom of the operation table is arranged on the other side of the computer. The top of the first support is provided with a shielding box, and the top of the inner wall of the shielding box is provided with a moving mechanism. Through the moving mechanism, the grabbing mechanism and the discharging port, earphones on the first conveying mechanism can be grabbed into the shielding box and then placed into the first earphone fixing block, automatic feeding of the Bluetooth earphones is achieved, the Bluetooth earphones can be automatically placed into the first earphone fixing block to be debugged, and the debugging efficiency is improved. And after debugging is completed, the earphones in the first earphone fixing block can be grabbed up through the grabbing mechanism, then the earphones are conveyed out through the feeding port and the second conveying mechanism, manual operation is reduced through the automatic process, and the production efficiency is improved.

The weak signal adaptability test and parameter debugging method for the electroencephalogram ADC comprises the following steps that S1, a gradient test signal set is constructed based on the amplitude range of electroencephalogram signals, and in the weak signal gradient system test link, in order to simulate the microvolt-level characteristics of the electroencephalogram signals, a high-performance signal generator is adopted as a signal source; high-quality signals with accurate frequency and pure waveform are output, the frequency range can cover sinusoidal signals with gradually increased frequency and amplitude of the electroencephalogram signals, and the attenuated signals are analyzed and measured by an audio analyzer; and S2, inputting the gradient test signal into a to-be-tested electroencephalogram ADC, collecting output data and calculating an adaptability index. The test is more systematic, a full-range weak signal scene is covered through gradient signal design, and the data volume is larger than that obtained through single signal test; debugging is more accurate, parameter debugging adaptability is high, and the index qualification rate of chip parameters collected after debugging is effectively improved.

The invention provides an acoustic automatic test system, which comprises an audio analyzer, a sound production device and a sound reception device, and is characterized in that the audio analyzer responds to a received test instruction and outputs a test signal; and outputting test data in response to the received electric signal, the sound production device plays a test audio in response to the received test signal; the radio device responds to the received test audio and outputs an electric signal; the system further comprises a PC terminal and a silencing box. The PC end is used for responding to the input control instruction, calling a pre-stored test instruction and sending the pre-stored test instruction to the audio analyzer; analyzing and processing the received test data to generate a corresponding test result; and the silencing box is used for providing a clean and noiseless experimental environment with accurate distance setting and accurate position so as to ensure that input and output of signals of the sound production device and the sound reception device are not interfered by the outside. The problems that in the prior art, when an electronic product with a loudspeaker or a microphone is subjected to acoustic testing, operation is tedious and low in efficiency, and result accuracy is poor are solved.

The headphone sound leakage test method provided by the present invention sends a signal of the same frequency to the headphone to be tested through an audio analyzer to obtain a reference voltage for the headphone sound leakage test; under the reference voltage, a sweep frequency signal is sent to the headphone to be tested through the audio analyzer; a second test microphone is provided at a certain distance from the headphone to be tested, and the sound pressure signal of the second test microphone is measured by the audio analyzer; when the sound pressure signal measured by the second test microphone is less than a set decibel value, the sound leakage effect of the headphone to be tested is qualified, otherwise it is unqualified. The present invention also provides a headphone sound leakage test device based on the present method, by which the test standard for headphone sound leakage is obtained, which can effectively control the sound leakage problem of the headphone and improve the subjective experience of the wearer.

The utility model discloses an audio analyzer, including equipment body, equipment interface, switch, handle, support leg, jack, fixed block, rotating shaft, slide hole, protective cover, bolt, the equipment body front end is equipped with equipment interface respectively, the switch is equipped on the equipment body front end, the handle is equipped on the equipment body left end, the jack is equipped on the support leg, fixed block, rotating shaft, slide hole, protective cover, bolt. The supporting legs are distributed at the bottom end of the equipment body, the insertion holes are formed in the front ends of the front supporting legs, the two fixing blocks are fixed to the left and right portions of the top end of the equipment body respectively, the left and right ends of the rotating shaft are rotationally connected to the inner ends of the fixing blocks respectively, the sliding hole is formed in the middle of the side end of the rotating shaft in the radial direction, and the protection cover is installed in the sliding hole. And the bolt is fixed on the protective cover through a rotating shaft. According to the utility model, the problem that when the audio analyzer is idle, each interface is directly exposed outside and is easy to be collided and damaged, dust is easy to fall, and the use is influenced is solved.

This invention discloses a vehicle-mounted audio equalizer accuracy measurement system, comprising an audio analyzer, an audio equalizer, a power amplifier, and a controller. The audio analyzer emits an audio signal. The audio equalizer adjusts the received audio signal according to pre-input theoretical control parameters to obtain the power amplifier input signal. The power amplifier processes the power amplifier input signal to obtain the audio analyzer input signal and outputs it. The audio analyzer analyzes the received audio analyzer input signal to obtain the frequency response curve of the audio equalizer. The controller analyzes the frequency response curve to obtain actual control parameters. This invention provides a vehicle-mounted audio equalizer accuracy measurement system that quantitatively evaluates the effect of the audio equalizer, ensuring that the vehicle's audio performance meets the expected standards.

The utility model relates to the technical field of sound absorption testing, in particular to sound absorption testing equipment for a nano sound absorption material, which comprises a sound absorption testing equipment main body, square boxes are fixedly connected to two ends of the sound absorption testing equipment main body, two round rods are connected to the inner side surfaces of the two square boxes, and sliding plates are slidably connected to the outer surfaces of the two round rods. According to the sound absorption testing device, the rack can be driven to move by utilizing the rotating gear rotating shaft, so that a plurality of nano sound absorption materials can enter the sound absorption testing device, a sound absorption test can be continuously carried out, the working efficiency of the sound absorption testing device is improved, and the sound excitation device gives out sound of a set decibel. At the moment, sound can penetrate through the nano sound-absorbing material, then the sound collector on the other side collects the received sound, and then the audio analyzer can carry out sound-absorbing test on the nano sound-absorbing material so as to obtain the amount of sound absorbed by the nano sound-absorbing material, so that the sound-absorbing performance of the nano sound-absorbing material is tested.

The embodiment of the utility model discloses a sound card point inspection device. In a specific implementation mode, the device comprises a main control unit, a sine wave generator and a distortion degree fine tuning unit, a first control output end of the main control unit is connected with a control end of the sine wave generator to control the sine wave generator to output sine waves with different frequencies; the distortion degree fine tuning unit is connected with the second control output end of the main control unit so as to automatically adjust the distortion degree of the sine wave based on the output frequency of the sine wave generator; and the sound card receives and tests related parameters of the sine wave. Compared with an audio analyzer, the implementation mode is low in overall cost and small in size; at different frequency points, parameters of the distortion suppression circuit can be automatically adjusted, sine waves with extremely low distortion are output, and the circuit can be suitable for various high-performance sound cards; according to the utility model, whether the sound card has problems is judged by comparing the audio parameters of the sine wave measured by the sound card with the audio parameters of the output sine wave, the operation is simple, and the device can be conveniently put into use in a production line.

The invention relates to the technical field of digital sound performance testing, in particular to a helmet Bluetooth headset and a performance testing device thereof.The helmet Bluetooth headset comprises a helmet body, mounting grooves are formed in the two sides of the helmet body, buttons installed on the helmet body are arranged on the upper sides and the lower sides of the mounting grooves, headset bodies are arranged in the mounting grooves, and the performance testing device comprises a contact plate. The electric sliding block is started to drive the threaded rod to rotate, so that the helmet Bluetooth earphone on the contact plate moves back and forth along the threaded rod, and the influence of wind power on the helmet Bluetooth earphone during driving on the road surface is simulated; meanwhile, the movement speed of the contact plate can be controlled by controlling the number of revolutions of the electric sliding block so that different wind speeds can be generated during movement of the contact plate, different bumping degrees of a road surface can be simulated during movement of the contact plate by selecting different arc-shaped plates to move upwards, and at the moment, an audio analyzer is started to detect whether the performance of the helmet Bluetooth headset is normal or not.

The invention relates to the technical field of loudspeakers, and discloses a loudspeaker polarity detection method and system, and the method comprises the steps: generating an excitation signal with a pulse mark through a control module, enabling a signal conversion module to drive a to-be-tested loudspeaker to make a sound, collecting the sound emitted by the loudspeaker through a sound collection module, obtaining a test signal, and carrying out the detection of the polarity of the loudspeaker. And the two signals are subjected to cross-correlation calculation, so that the polarity state of a single loudspeaker can be quickly and accurately judged. Compared with the prior art, the method does not need to depend on an expensive audio analyzer and a customized test fixture, so that the detection cost is effectively reduced; meanwhile, missed detection and error detection risks caused by manual visual detection are avoided, and the detection accuracy and reliability are improved; moreover, the method is suitable for an automatic test scene of a consumer electronics production line, can realize rapid polarity detection of a single loudspeaker, meets the large-scale quality inspection efficiency requirement of hundreds of loudspeakers per minute, remarkably improves the production efficiency and the product quality stability, and is helpful for enhancing the market competitiveness.

The utility model discloses a multichannel audio test system, which comprises an audio analyzer, a multichannel switching unit, a plurality of sound production units and a plurality of pickup units, audio signals are output to the sound production units of corresponding channels one by one through the multichannel switching unit, the sound production units are driven to produce sound, and the sound is picked up by the corresponding pickup units. And the pickup units output sound signals obtained through pickup to the audio analyzer, so that performance testing of the plurality of sound production units and / or the plurality of pickup units is realized. According to the utility model, the test efficiency and the test precision of the multi-channel audio test are improved, and the multi-channel test requirements of a loudspeaker array, a parametric array loudspeaker array, a microphone array and the like are met.

The invention relates to the technical field of acoustic testing, and particularly discloses acoustic automatic testing equipment which comprises a rack, and a testing device, a product processing device, a moving device and a central control device which are arranged on the rack, the testing device comprises a shielding box, a radio frequency installation assembly installed in the shielding box, an audio analyzer located outside the shielding box and a wireless communication comprehensive tester. The product processing device comprises a bearing platform movably arranged on the rack and an electrical interface module arranged on the bearing platform, the bearing platform is used for limiting a to-be-tested acoustic product, and the to-be-tested acoustic product is electrically connected with the central control device and the testing device through the electrical interface module; the motion device is used for driving the bearing platform to reciprocate so that the to-be-tested acoustic product is matched with the shielding box for use; the central control device is electrically connected with the testing device, the product processing device and the moving device and used for controlling the devices to work cooperatively to execute the testing process of the acoustic product to be tested.