audio frequency
audio-frequency的词性:n.Abbr. AF(名词)缩写 AF
1. A range of frequencies, usually from 15 hertz to 20,000 hertz, characteristic of signals audible to the normal human ear.音频,声频:频率的范围,大约在15至20,000赫兹之间,是正常耳可听见的声波信号