I--We were going D G B G B so as long as the notes have the same names or it sounds the same, even though there may be octave doubling in there we still think of that as monophonic texture.

我,我们只要,D G B G B,只要各个音的音名一样或听起来一样,尽管其中有双八度音,我们仍把它作为做单音织体

耶鲁公开课 - 聆听音乐课程节选