The audio test system plays a key role in testing small motors and motors. Composed of a test computer, audio analyzer, standard microphone, audio analysis software, and soundproof box, it ensures accurate noise detection. The soundproof box isolates external interference, letting the standard microphone capture pure motor noise. The soundproof box maintains a low-noise environment, critical for precise frequency and decibel analysis via the audio analyzer. The soundproof box’s acoustic insulation guarantees that the test computer, running audio analysis software, processes only valid motor sound data. Without the soundproof box, external sounds would distort results. The soundproof box stabilizes testing conditions, enabling consistent comparisons between motor samples. The soundproof box’s design ensures repeatability, making the system reliable. Ultimately, the soundproof box, paired with other components, makes the audio test system indispensable for assessing motor acoustic performance.