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Car audio test equipment is a key tool to ensure the quality of the car audio system. Through multi-dimensional detection technology, it ensures that the audio presents stable sound effects in complex car environments. Its functions cover the whole process quality control from parts to complete machines.
Sound quality parameter detection is the core function. The equipment can accurately measure key indicators such as frequency response (20Hz-20kHz), signal-to-noise ratio (≥85dB), and total harmonic distortion (≤0.1%). Through a microphone that simulates the hearing characteristics of the human ear, it captures the sound performance of the speaker at different powers, determines whether there are problems such as noise and distortion, and ensures balanced output of high, medium and low frequencies.
Environmental adaptability testing is essential. The device can simulate extreme vehicle environments such as high temperature (-40℃ to 85℃), vibration (10-2000Hz), and humidity (5%-95% RH), and detect the stability of the audio system during continuous bumps or sudden temperature changes to avoid jamming and disconnection during driving. In particular, the anti-interference ability of the wiring harness interface can be verified through electromagnetic compatibility testing (EMC).
Functional compatibility verification ensures system coordination. The device can simulate the connection status between the vehicle host and the speaker and amplifier, test the Bluetooth connection stability (transmission distance ≥10m, disconnection rate ≤0.1%), USB interface data transmission speed, and compatibility with the vehicle system (such as CarPlay, Android Auto), to ensure the normal response of the multimedia control function.
Reliability aging test extends service life. Through a continuous 200-hour full-load operation test, the performance attenuation of the audio system after long-term use is detected, the durability of the speaker diaphragm and amplifier chip is evaluated, and the product service life is ensured to be more than 5 years. At the same time, the effectiveness of its safety protection mechanism is verified through short-circuit and overvoltage protection tests.
These functions together build a quality defense line for car audio, providing professional performance data support for car companies and consumers from R&D debugging to mass production quality inspection, which is an important technical guarantee for improving the in-car audio and video experience.
