I just realized I visualize it. As a sinusoid. Go figure. [Edit] So I looked at the paper, here are the visual options: https://aipp.silverchair-cdn.com/aip

I just realized I visualize it. As a sinusoid. Go figure. [Edit] So I looked at the paper, here are the visual options: https://aipp.silverchair-cdn.com/aipp/content_public/journal/jasa/156/5/10.1121_10.0034416/1/m_3468_1_10.0034416.figures.online.f1.jpeg https://aipp.silverchair-cdn.com/aipp/content_public/journal... The result is hardly surprising...and a triangle wave is a pretty reasonable approximation of a sine wave...and 2nd least jagged of the simple wave forms.