| 样品编号 | 测试结果［dB(A)］ | ||||
| 上 | 右 | 后 | 左 | 前 | |
| 1# | 16.5 | 15.9 | 17.2 | 17.1 | 16.3 |
| 2# | 21.3 | 17.0 | 23.2 | 26.4 | 18.6 |
| 3# | 17.7 | 15.7 | 19.1 | 20.8 | 17.8 |
| 本底噪声 | 15.9 | 15.5 | 16.6 | 16.1 | 16.1 |
|
备注说明 |
1. 测试麦克风摆放位置：正对测试面；距离 30cm。
2. 输入电源 220V/50Hz；输出负载 0.3A。 |
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| 主要的检验仪器、设备清单 | ||||
| 序号 | 仪器、设备名称 | 型号 | 编号 | 计量有效期 |
| 1 | 多通道音频信号分析仪 | B&K 3560C | 2491447 | 2013.11.15～2014.11.14 |
| 2 | 消声室 | 8.2m×6.1m×6.1m | 625031821 | 2013.10.16～2018.10.15 |
噪音测试现场
音频测试检测结果
![上 [dB(A)/20.0u Pa] Autospectrum(1) - Input Cursor Values Working : Input : Input : CPB Analyzer Y = 19.6 dB(A)/20.0u Pa 20 X = 12.50k Hz 0 -20 Status 9/22/2014 14:56:26.670 -40 Averaging time: 30 s Overload: 0.00 % -60 63 250 1k 4k 16k Total [Hz] Sum = 21.3dB(A)/20.0u 右 [dB(A)/20.0u Pa] Autospectrum(2) - Input Cursor Values Working : Input : Input : CPB Analyzer Y = 11.6 dB(A)/20.0u Pa 20 X = 12.50k Hz 0 -20 Status 9/22/2014 14:52:12.015 -40 Averaging time: 30 s Overload: 0.00 % -60 63 250 1k 4k 16k Total [Hz] Sum = 17.0dB(A)/20.0u P [dB(A)/20.0u Pa] 后 Autospectrum(3) - Input Working : Input : Input : CPB Analyzer 250 1k [Hz] Cursor Values Y = 22.0 dB(A)/20.0u Pa 20 X = 12.50k Hz 0 Status -20 9/22/2014 14:52:12.015 Averaging time: 30 s -40 Overload: 0.00 % 63 4k 16k Total Sum = 23.2dB(A)/20.0u P [dB(A)/20.0u Pa] 左 Autospectrum(4) - Input Working : Input : Input : CPB Analyzer 250 1k [Hz] Cursor Values Y = 25.9 dB(A)/20.0u Pa 20 X = 12.50k Hz 0 Status -20 9/22/2014 14:56:26.670 Averaging time: 30 s -40 Overload: 0.00 % 63 4k 16k Total Sum = 26.4dB(A)/20.0u [dB(A)/20.0u Pa] 前 Autospectrum(4) - Input Working : Input : Input : CPB Analyzer 250 1k [Hz] Cursor Values Y = 14.8 dB(A)/20.0u Pa 20 X = 12.50k Hz 0 Status -20 9/22/2014 14:52:12.015 Averaging time: 30 s -40 Overload: 0.00 % 63 4k 16k Total Sum = 18.6dB(A)/20.0u P](http://www.puseng.cn/wp-content/uploads/2020/06/cf88cecebea9fcb00fabc09fbf2680d5.png)
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