Inverse Square Law, Sound

反平方定律，声音

The sound intensity from a point source of sound will obey the inverse square law if there are no reflections or reverberation. A plot of this intensity drop shows that it drops off rapidly.

从声源发出的声强如果不存在反射或混响，将遵循反平方定律。这种强度下降的曲线显示其下降速度非常快。

Calculation

计算

Intensity ratios

强度比

Measurement example

测量示例

Other examples of inverse square law behavior: 其他逆平方定律行为的例子：	Gravity 重力	Electric 电
	Radiation 辐射	Light 光

Index

Sound level measurement

Auditorium acoustics

索引声电平测量声学剧场

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Inverse Square Law Plot

反平方定律图

A plot of the drop of sound intensity according to the inverse square law emphasizes the rapid loss associated with the inverse square law. In an auditorium, such a rapid loss is unacceptable. It is mitigated by the reverberation in a good auditorium. This plot shows the points connected by straight lines but the actual drop is a smooth curve between the points.

声强按反平方定律下降的曲线图强调了反平方定律带来的快速衰减。在音乐厅中，这种快速衰减是不可接受的。通过良好的音乐厅中的混响得以缓解。该曲线图显示的是由直线连接的点，但实际的衰减是一个在点之间的平滑曲线。

Index

Sound level measurement

Auditorium acoustics

索引声电平测量声学剧场

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Sound Intensity from a Point Source

点源发出的声强

Sound from a point source obeys the inverse square law. It's intensity in decibels can be calculated by comparing the intensity to the threshold of hearing.

点声源发出的声波遵循平方反比定律。其以分贝为单位的强度可通过将其与听阈的强度进行比较来计算。

Decibel definition

分贝定义

Decibel calculation

分贝计算

Calculating dB for distance ratios

计算距离比的dB

Estimating sound levels in decibels

用分贝估算声音水平

Index

Sound level measurement

Auditorium acoustics

索引声电平测量声学剧场

HyperPhysics***** Sound

HyperPhysics ***** 声音

R Nave

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