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Decibel (dB) | 分贝

The unit used to measure sound level, but it is also widely used in electronics, signals and communication. The dB is a logarithmic way of describing a ratio. The ratio may be power, sound pressure, voltage or intensity or several other things.

 

这个单位用来衡量声音大小，但同时也在电子，信号以及通讯中广泛使用。这个单位是描述比率的对数方式, 这个比例可以是功率，声压，电压或强度等几个方面.

 

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