trebleとは何ですか? trebleとは何ですか? Triple: "treble reason for loving as well as working while it is day” ( George Eliot). Music Relating to or having the highest part, voice, or range.High-pitched; shrill. Music The highest part, voice, instrument, or range.Music A singer or player that performs this part.A high, shrill sound or voice.To make or become triple.