声压等级 (SPL) Sound Pressure Level (SPL) 声压等级 (SPL) 也称为声

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试卷: 专业术语--单位与测量[查看]
声压等级 (SPL) Sound Pressure Level (SPL)


声压等级 (SPL) 也称为声压，是一种与声波相关的压力变化。声压通常以分贝为量度单位，声压等于测量
值和参考值之比。通用的参考为正常人耳能听到的可听阈或最低音量。
Sound pressure level (SPL), also known as acoustic pressure, is the pressure variation associated with sound waves. Usually measured in decibels, the acoustic pressure is a ratio between the measured value and a reference value; a common reference is threshold of hearing or the minimum sound level that the average person can hear.