Let's talk about getting your first measurement set up in
Smaart DI. When you open up Smaart DI for the first time it should look
something like this there's no traces over here none of this stuff is set up
and the first thing you want to do is open up the options sorry the config the
IO config and you can either do that from this menu or by choosing option a
ok I recommend that first you just choose the right input an output device
so go through this list and just check and uncheck everything that you want
okay right now I only have one thing going here I don't want it to offer me
any of this other stuff ok the next thing you want to do is take a look at
these input names down here and give them friendly names to make this easier
on yourself and be aware that hitting tab like in other pieces of software
will not save your input so if I change this to hello and hit tab it's gonna
revert back to ref if I hit return it takes me to the next line and saves my
second input in this case is going to be my reference input and then my third
input will be this microphone up here can't see it it's behind this other
microphone the emx 7150 and then the fourth one will be this microphone that
you can see 3000 l I think ok that's all we need to do here we name to the
microphones and you can name the outputs if you want to but I don't really care
that much about that I'm only using output one anyway now let's take a look
at this next step oh one thing to consider here the sample rate the only
thing I want you to keep in mind about the sample rate is that you want to keep
it consistent as much as possible I have had problems in the past where
I've done I've saved done some measurements save some traces at 40 40
4.1 K and then tried to import them into a four tak session and you can't do that
so just keep it consistent that shouldn't be a problem if you're just
taking measurements during a tuning in one day it should always be at the same
sample rate okay next tab measurement config now you're not going to have any
of these extra ones set up yet so all you're gonna see is default TF
and really that's all you need at the beginning if you're just measuring with
the single channel we'll get into creating new pairs later but for now all
you really need is the default TF these are all just the standard settings that
this comes with except for the input settings so this is where I'm going to
choose my reference input and my measurement input and as you can see
here they're backwards right now so for my measurement input I want that to be
the 70 150 through the default transfer function that's what TF stands for and
for the reference signal I want it to be my reference my loop that I created here
is a problem that I've had I don't know if it's a bug maybe it's just happening
to me but probably check this every time you open all right these are settings
you should just go through quickly every time you open smart di every time you're
you know on-site in the field getting ready for some new work open these up
just go through them real quick and make sure everything is as it should here's
why I have noticed several times that I open up smart di and this is not as I
saved it for some reason these can get switched around and if they do
everything's gonna look wonky okay I can actually show you what that looks like
in a future video but for now we're just going to go through all the settings you
need to go through the first time you open up smart di okay by the way one way
around that possible bug possible saving problem that I found is to create a new
signal pair so if you create a new signal pair give it a new name
and we'll call this one a and then we choose the reference input and Oates I
did that wrong the measurement input and the reference input then I found that
that will not get forgotten the next time I open up a smart di that should be
correct anyway I've got my default TF set up here measurement input reference
signal and I can hit OK the last thing we need to set up is the signal
generator so that's here under the options menu or you can hit option in to
open that up these are all default settings the only thing you really need
to look at and make sure that you've got the right output device selected here
and the right output what is aux so you guys know that I recommend that when
you're first starting out you just use a Y cable and take the output from your
audio interface and immediately loop one of your splits back into the input ok
that's the easiest way to do it you know exactly where the signals going you know
that this is an exact copy of what you have coming out of the output this is
now going to get connected to your speaker or whatever you're measuring if
you don't have a YK bow and you might have an audio interface
like the one I have down here this bérenger unit has a copy it has two
outputs for each output that is for the left output it has an XLR output and a
TRS output so I use the TRS output to loop back in for my reference input and
use the XLR output to go to the speaker if you don't have that that's where this
aux output can come in handy so if I didn't have this Y cable then what I
could do is choose output one for my main output and then output two right
here for my aux output and all that's going to do is send an exact copy of the
same measurement signal to both of these outputs that way I can just take a TRS
cable from output one loop it back to my input one
reference input and then I can take output to and send that along to my
speaker or whatever I'm measuring that's what the aux output is for I'm not using
it right now okay those are all the settings you need now you should be able
to go to spectrum view right away which you can do by hitting the S key or by
click on spectrum and now you should immediately see some measurements here
now if you're not seeing measurements but you are seeing your meters danced
around up here then let's take a look at what we actually have selected here now
we want to see our reference input and the measurement microphone ok and to
actually see that measurement here in spectrum I need to hit the play button
here and make those active okay so now I obviously am looking at the measurement
microphone in the room that's the green one right the 7150 that's how you can
tell them apart I don't have any signal coming in on the blue one yet because I
haven't turned the signal generator on but I can still see this noise floor
there is some signal here obviously it's not nothing
if I were to unplug it a hundred percent there's nothing plugged in right now we
can still look at that though the reason we don't see it here is that it's too
far down on the graph so if you ever have a signal that's too low so right
now what if I actually turn this microphone all the way down so now I've
turned both of these all the way down I'll reset this display by hitting the V
key and so you might have the situation where you open this up and you're like
oh wow it's way down here I can barely read it or maybe you don't see it at all
because your signal is just too low now if you click over here and that doesn't
do it then use the arrow keys and scroll down until you actually see your
measurement and there we go so that's how you can see if you have things
plugged in and set up correctly ok and then you should be able to head back
over to the transfer function window by pressing the T key or pressing transfer
and then you select whichever of the pairs you set up in our case we just set
up the default TF and you should be able to go ahead and
turn on your signal generator and see a measurement there so in the next videos
we'll get into actually verifying whether or not we have good data because
one of the first questions that I had and that everybody always has when they
first start is now that I've gotten a measurement what are all these squiggly
lines okay so you're gonna take a measurement and then you're gonna get
something like this and you're gonna say wow what is all this stuff and you take
another measurement like what do I do with this right and I think the first
question is is this even good valid data so in the next video I'm going to go
through these same steps with the full version of smart and then with Sat live
and then we're gonna start looking at how to actually know if we have good
data sound design