Hi everyone, Dennis Foley from Acoustic Fields. Today we're going to talk about the difference
between velocity and pressure. I think if people start to understand a little bit more about
the science, we'll have better comprehension of acoustic. So velocity obviously is the distance
the sound energy will propagate in a said material in a given time. Remember this whole formula
from school? Distance equals rate times time. So Velocity is also a function of the material
type you're using, the impedance or resistance that it offers, obviously temperatures of consideration.
You ever notice that your listening room or mixed room sounds different at different temperatures
winter and summer? Well, there's your variable right there. And sound pressure is really an
average variation. So we have distance and variation. Those are the two things that we need to keep
in mind. in atmospheric pressure caused by sound distance versus variance. So those are the
two things that we have to keep in mind when we're dealing with acoustics because these
are the underlying principles underneath pressure and reflections which are our two major issues,
right? So pressure is the wave energy and it's the variation of that, that constant oscillation
throughout the room impacted by room dimensions. impacted by obviously the distance floor to
ceiling. So you have to take all of this into consideration. You have to understand how energy
moves in the room. Remember I always say the room only sees energy. Well this is what it
sees. These are characteristics of the energy that it sees and how it deals with that. Acoustical
impedance, you know, a form of resistance. What do we got next? So the ray energy obviously
is velocity, speed, mids and highs. Pressure is the low frequency. So you have to understand
that. The treatment must reflect both velocity and pressure. So our foam obviously for molecular
velocity because air movement across it, right? And then we have the pressure which is diaphragmatic.
That's the technology we've chosen to deal with pressure. We have hemolts in membrane. We use
diaphragmatic because it's the most powerful. And then we put our carbon inside of it which
really makes it powerful. So we kind of hot rod it, so to speak. People got to start understanding
this, type amount position. It's an acronym we use called TAP. You got to select the right
type of treatment, the right amount of treatment, we call that critical mass and place it in
a proper position. People get really confused here with type. And they mix up pressure. velocity,
wave and ray energy. This is where the thing with fault becoming a base trap. It's nonsense.
It doesn't satisfy any of these criteria. So that's why it's laughable. So if you know the
science, you can look at the claims companies are making and go, that just can't be. See,
but if you don't know the science behind it, you'll get tricked. Especially, you know, with
that corner stuff. That's the biggest trick in the industry. Treat the whole wall, you
don't have a corner problem. What's that tell you? That the corner's not the problem. I don't
know how many times I have to say that, but that's the way it goes. So. Hopefully I know
it's dry, it's not very exciting and stuff like that, but you need to understand some of the
underlying science behind the acoustics that we have to work with. Velocity versus pressure.
Hope this helps. Thank you.
We have started a forum on our own website where people ask questions and I usually get a chance
every couple days to look at it. There's an interchange between people on the forum and
we'll give you real answers on a regular basis so that'll help you. Thank you.