15 results about "Audio analyzer" patented technology

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 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.

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 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.

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 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.