可か聴ちょう周しゅう波は数すう

noun

audio frequency; AF

Technical term used in computing, audio engineering, and acoustics to refer to frequencies within the range of human hearing (roughly 20 Hz to 20 kHz).

• この回かい路ろは可か聴ちょう周しゅう波は数すう帯たい域いきで動どう作さする。

  This circuit operates in the audio frequency range.

• 可か聴ちょう周しゅう波は数すう以い上じょうの音おとを超ちょう音おん波ぱと呼よぶ。

  Sounds above the audio frequency range are called ultrasonic waves.