Hi! Thank you for your participation. I like your ideas very much! What I suggest is, the line in the cube remembers me of a heart machine in hospital... :-) When you are searching for "waveform" with google, you see, how it should look like. I hope you understand, what I'm trying to tell you...
Thank you miss Irene. I am sorry for the really late respond. I understand what you mean, the sound wave need to have tighter frequencies. I'd love to fix it for you but in this judging mode only first rank can submit the design.