Audible results from measurements Reply #25 – 2013-02-26 01:06:34 Quote from: julf on 2013-02-25 17:31:22Quote from: Yahzi on 2013-02-25 16:57:36Sorry Arnold, how do you work out the harmonic percentages in terms of how far below the signal is from the fundamental? I noticed 0.1 would be -60 below the fundamental and 0.03 would be -70. Please explain how that works. Thanks!Wikipedia: DecibelYes That table in the upper right hand corner of the cited page makes it all pretty clear. Neat reference!