If you want a very simple visualisation: imagine the soundwave as people, leaving an elevator into a big room. They will tend to spread out in a half circle. Like a soundwave does if it has to pass a narrow slit. The string vibrates the soundbox, and from there, sound goes in every direction.
SuddenYodeling t1_j6um3bh wrote
Reply to comment by coffeewithalex in How can we hear an oscillating string from every angle? by GreatKhaaaaan
If you want a very simple visualisation: imagine the soundwave as people, leaving an elevator into a big room. They will tend to spread out in a half circle. Like a soundwave does if it has to pass a narrow slit. The string vibrates the soundbox, and from there, sound goes in every direction.