[geoff]

On 3/09/2014 7:15 a.m., Don Pearce wrote:
On 2 Sep 2014 14:39:09 -0400, (Scott Dorsey) wrote:

Don Pearce wrote:

So...loudness is power based, logarithmic. A stadium of 50,000 cheering
people generates power, which increases the loudness, with some
attenuation depending on phase, and is not 50,000 X the loudness of 1
person cheering.

And bear in mind that most of those 50,000 are a long way from you.
Only the nearest twenty or so people contribute in meaningful way to
the loudness you hear. The rest just add the background sussuration.

In an open stadium this is definitely the case; you can think of the top
of the stadium as being infinitely absorptive. Sound just goes up and keeps
on going. But in a closed reverberant basketball court it's not!
--scott

We don't bother with basketball over here, but a large public swimming
pool certainly proves this. Why do people insist on screaming when
they swim?

d



Piranhas ?

geoff