"So yes, as you might have noticed I spend a lot of time to get
low-level internals right. And I like to speak about it, even
though most people are not aware of all those technical details and
how awesome this all is. ;-) That said, this stuff isn't perfect
yet and could need more improvements.
"But it's not all just in the low-level details. Also on higher
levels we got inspired by how our competitors do things. For
example the new "flat" volume logic was pioneered in Vista, and we
have now adopted a similar logic in PA. It's a great way to reduce
the complexities of volume control by 'merging' a few of the
sliders in the pipeline. It thus solves the "So which slider is now
causing my volume to be too low?" a bit. But also here, there's
more work to be done.
"It's not all just getting inspired by our competitors. There
are a lot of genuinely new features in PA that none of them have
(at least to my knowledge). For example, in PA we have 'spatial'
event sounds. I.e. if an event sound sound is triggered by a mouse
click/dialog at the left side of the screen the sound is generated
more from the left speakers, and similar for the right side. This
is of course mostly a toy. But I think a useful one ;-) ."