YES. YES. YES.
If you think too hard about it
your mind is going to get into
some weird trans and make yourself
believe that somehow there is no sound
whatsoever unless someone is able to
hear it themselves. Thats not true,
get out of that thought right now.
Sound was born when everything else was
born. Sound is the reaction of energy.
The transfer of energy, more precisely.
The tree falls, there is gravitation potential energy.,
When it lands, kinetic energy. The transfer makes a
big sound, and also has damage done to the surface.
No matter if there is 200 people there, or none,
it makes a god damn sound.