读者夏雨问:“分贝是声波的强度单位吗?若用基本单位表示,它有何种具体的形式?”若简单地回答这个问题,那就是分贝并不是声波的强度单位,而是表示一种声强级别的单位,它是一个纯数字,和基本单位(如时间单位秒、长度单位米、质量单位千克等)并没有什么关系.声音是一种波,能引起人听觉的频率范围为20Hz~2×10~4 Hz,通常将此频率称为声频. Reader Xia Yu asked: “Is decibel the unit of sound intensity? If it is expressed in basic units, what is its specific form?” If we simply answer this question, that is, decibels are not intensity units of sound waves. Instead, A unit of sound intensity level, which is a pure number and has nothing to do with the basic unit (such as the unit of time in seconds, the unit of length in meters, the unit of kilogram in mass), etc. Sound is a wave that causes the frequency of human hearing The range is 20Hz ~ 2 × 10 ~ 4Hz, this frequency is usually called audio frequency.