1. Great! I really like that you explain molecule motion in space without introducing sines. I think many struggle to visualize the sine in space.

  2. Great and very informative video. Thanks!

    In the video you always visualize one frequency at a time per acoustic source (or two frequencies coming from two sources). What I’ve been asking myself for a long time: how does a single driver manage to produce two or more frequencies (or a frequency range) at the exact same time? For example a singer singing while the guitar plays in the background. Could you try to explain how this works? Or maybe even visualize it like in the video above? Would be really great!

  3. hi Simon,

    An excellent topic for a future posting! Thanks for the question! I’ll start working on it this week.


  4. david moran says:

    well, the same way the eardrum works
    aggregated — soundwaves combine
    the ear is miraculous

  5. david moran says:

    I am not sure how helpful it is for sound to be conveyed graphically here always as one tone, but others find it useful or do not find it confused. Also, the poor pause-prone voice speaker sounds as if he either sometimes is not getting it, not following the thinking, or is reading from a script with odd and unhelpful breaks. Finally, I was admiring that that common, mostly awful and misleading phrase ‘move air’ was not used — transducers hardly do anything of the sort, really; what they do, as the graphics nicely demonstrate, is hit or strike the air — but then at the end ‘moving air’ is employed after all, sigh. Not like a fan.