noun
audio frequency; audible frequency
Technical term used in acoustics, audio engineering, and electronics. AF is a common abbreviation.
可聴周波の範囲は、一般的に20Hzから20kHzとされている。
The range of audio frequencies is generally considered to be from 20 Hz to 20 kHz.
この装置は可聴周波を増幅する。
This device amplifies audio frequencies.
周波数 is the general term for frequency, while 可聴周波 specifically refers to frequencies within the human hearing range.
Compound of 可聴 (kachō, 'audible') and 周波 (shūha, 'frequency'). The exact historical derivation is uncertain, but the term follows standard Sino-Japanese technical word formation.