Unverified85% confidenceFactTime unknown
白噪音（均匀）掩蔽高频杂音好，粉噪音/棕噪音低频更强、更适合掩蔽交通/低沉环境噪音；出行掩蔽车厢发动机声优先选带棕噪音/粉噪音的机型
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85%
Confidence
Long-term
Relevance
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