Acoustics
Acoustics
Application Scenario
New‑energy Vehicles: Electro‑acoustic test for central‑control screen, entertainment screen and automotive speaker, etc.
Consumer Electronics: Mobile phone, tablet, laptop, smart watch, VR/XR/AR, headphone, card reader, conference terminal, sweeping robot, speaker box, etc.
Test Content
Microphone Test: Test frequency response (FR), total harmonic distortion (THD), phase, sensitivity and air‑tightness; verify recording performance of product microphones, multi‑mic consistency and air‑sealing performance.
Speaker / Receiver Test: Test frequency response (FR), total harmonic distortion (THD), rumble & buzz (R&B), polarity, impedance, etc.; verify signal path, acoustic performance and playback performance of the speaker / receiver.
Headphone Test: Test FR, THD, R&B of headphone microphone and left‑right channels; verify headphone signal path and acoustic performance.
Application Scenario
New‑energy Vehicles: Motor noise test, battery pack vibration test, abnormal noise troubleshooting for reducers, noise control of energy‑recovery system, etc.
General‑purpose Machinery: Vibration and noise inspection for water pumps, fans and compressors; fault diagnosis for bearing wear and abnormal gear meshing.
Consumer Electronics: Fan noise and key‑press vibration test for mobile phones and laptops, acoustic‑performance calibration for headphones, wearable‑vibration optimization for VR/AR devices.
Test Content
Vibration Test: Measure vibration acceleration, velocity and displacement of structures or components, e.g. engine block vibration, machine‑tool worktable vibration.
Noise Test: Collect airborne sound or structure‑borne radiated sound, e.g. interior vehicle noise, fan aerodynamic noise.
Harshness Test: Evaluate subjective comfort brought by vibration and noise, e.g. the perceived harshness of automobile seat vibration.
