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• r

• ru

• rur

• yueuhd

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• yyh

• ywey

• gwhbnbn

• ag

The sound energy transferred per second from the noise source to the air

• Sound Pressure Level

• Sound Level

• Sound Power

• Sound Pressure

Bending or “flowing” of a sound wave around an object or through an opening

• Diffusion

• Diffraction

• Absorption

• Reflection

A value given in decibels, which is determined by measuring sound pressure levels at a certain frequency in the source and receiving rooms.

• NRC

• SAC

• TL

• SPL

Pitch is the subjective term for Frequency

• Maybe

• False

• True

• NOTA

人耳對多少Hz左右的音最

敏感?

• 200Hz

• 1000Hz

• 4000Hz

• 10000Hz