AM radio can be sent over larger distances, but the quality of the sound is not as good as a later kind of radio signal processing, called frequency modulation.

VOA: special.2010.12.08

They play with these partials on each of these notes, but this is just one sound with all of these other things mixed in to the medley that produces the quality or timbre of a particular instrument.

它们改变音符中的分音的强度,不过这只是一个声音,要算上其它所有分音的集合,才能构成一个特定乐器的音色

耶鲁公开课 - 聆听音乐课程节选

They play with these partials on each of these notes, but this is just one sound with all of these other things mixed in to the medley that produces the quality or timbre of a particular instrument.

它们改变音符中的分音的强度,不过这只是一个声音,要算上其它所有分音的集合,才能构成一个特定乐器的音色

耶鲁公开课 - 聆听音乐课程节选