关于瀑布图, Zaph专门有一段说法: http://www.zaphaudio.com/tidbits/
Usefulness of the CSD...
As I've said several times before, the cumulative spectrum decay (CSD) is a highly overrated form of measurement and is merely a different way of looking at the frequency response. It's all generated from the same impulse and it's all linear distortion. Yet, the CSD is often misread. To make a point, I'd like to present two CSD's done under the same conditions - one for a poly cone driver with a well damped breakup, and one for a metal cone driver having a harsh breakup 6.5kHz.
意思是:CSD被夸大了. 并且经常被误读. 举个例子: 下面一个是塑料盆, 一个是金属盆的. 哪一个更好呢?