专用噪音测试分贝仪进行车内噪音测试。
测试过程使用手机拍摄,有点模糊。以下是测试过程:
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怠速状态时测试:
隔音前后怠速状态下噪音测试数据:
隔音前 --- 54.0dB
隔音后 --- 49.9dB
车辆启动怠速状态时直接降低噪音:4.1dB,声音能量下降约60%
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时速40码时测试:
隔音前后时速40码时噪音测试数据:
隔音前 --- 61.2dB
隔音后 --- 58.3dB
时速40码时直接降低噪音:2.9dB,声音能量下降约50%
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时速60码时测试:
隔音前后时速60码时噪音测试数据:
隔音前 --- 64.8dB
隔音后 --- 62.9dB
时速60码时直接降低噪音:1.9dB,声音能量下降约36%
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时速90码时测试:
隔音前后时速90码时噪音测试数据:
隔音前 --- 67.7dB
隔音后 --- 64.0dB
时速90码时直接降低噪音:3.7dB,声音能量下降约56%
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