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I could not find any beautiful oscilloscope emulators. Lines produced by most emulators barely look like real oscilloscope lines at all.

Because of that I made a cool WebGL demo — woscope, which is a XY mode oscilloscope emulator.


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    bravo! for clarification, when they say

    Each pair of samples from the sound file interpreted as 2D point.

    do they mean simply the intensities of two consecutive pairs of scalars, x & y being left and right channels?

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      yes, the channels are connected to x and y respectively. this page has more detail on how oscilloscope visualisations for music work.