Sound level meter

An integrating-averaging Cirrus Optimus which complies with IEC 61672-1:2002

A, C and Z frequency weightings for sound

Noise monitoring station at Muir Woods National Monument in California[11]

A sound level meter is used for acoustic (sound that travels through air) measurements. It is commonly a hand-held instrument with a microphone. The diaphrahm of the microphone responds to changes in air pressure caused by sound waves. That is why the instrument is sometimes referred to as a Sound Pressure Level (SPL) Meter. This movement of the diaphrahm, i.e. the sound pressure deviation (pascal Pa), is converted into an electrical signal (volts V).

单词	Sound level meter
释义	Sound level meter 原声例句 VOA常速英语_科技 SoundPrint developers found the microphones and iPhones to be comparable to a professional sound level meter. SoundPrint的开发人员发现麦克风和苹果手机可以与专业的声级计相媲美。节日综合录 We used a sound level meter to detect the outside volume level and then looked at how I adjusted my volume on my iPhone in turn. 我们用音量测试器来检测外界的声音，接着看我如何调整 iPhone的音量大小。英语百科 Sound level meter A sound level meter is used for acoustic (sound that travels through air) measurements. It is commonly a hand-held instrument with a microphone. The diaphrahm of the microphone responds to changes in air pressure caused by sound waves. That is why the instrument is sometimes referred to as a Sound Pressure Level (SPL) Meter. This movement of the diaphrahm, i.e. the sound pressure deviation (pascal Pa), is converted into an electrical signal (volts V).
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