- [Instructor] Let's talk briefly about audio connections.
And let's say you have a computer
like a desktop or a laptop computer.
Audio ports on these systems allow audio signal
to be inputted to, and outputted from, a computer,
you know, your laptop, your desktop,
whatever system you might have.
For the most part on computers like desktops and laptops,
you only see TRS 3.5 millimeter mini-jacks
and also optical connectors in some cases.
So let's show some of these now.
Here are a couple images of the sound ports
you might see on a desktop computer.
And the first one is a sound card that actually goes
into an adapter card slot.
The second one is integrated to the motherboard.
So let's look at these ports.
They're all color coded,
and this is part of the PC system design guide,
which was finalized in 2001.
And you might see PC 99 or PC 2001.
Those are system design guides,
which include all kinds of things,
including color coding for each of these ports,
and that color coding stuck till today.
So these are the colors we use.
First here, we see blue, and that is a line input,
and its seconds as a mic input.
So if you have a headset and you wanna use the microphone
on it, you'd plug that into the blue port.
Now, in some cases, this will be pink.
Sometimes it is a pink input instead.
If it is pink, it's microphone only.
If it's blue, it could do microphone
or act as a line input from other devices,
like your smartphone or from an audio device,
like a audio processor or some type of music device.
Then we have green.
That's the main stereo output.
If you have just two speakers, or your headphones
if you're using headphones.
And that's what people are usually gonna use.
That's gonna be the port, the green port
and it's known as lime green.
It can also act as a line out to a PA system or a stereo
or if you want to, you know, connect your computers
to a much more powerful system for sound.
Then we have our surround sound ports.
First, we have the black, that's the output
for the surround sound speakers, the back speakers.
And then we have the orange and that's the output
for the center speaker in front of you and a subwoofer.
So used collectively the green, the orange,
and the black give you 5.1 sound,
five speakers, plus a subwoofer.
Then on this card, you have the gray,
and you know, you're not always gonna see that
on every system, but on this particular card,
we have this gray connector,
and that's the output for the surround sound speakers.
And that'll give you 7.1.
So additional surround sound speakers,
speakers that go on the side of you.
And so now you seven speakers plus the subwoofer,
so that's known as 7.1.
Not too many applications or games actually program
in 7.1, usually 5.1 is enough.
Even movies, usually 5.1 is enough.
So those are your TRS ports,
3.5 millimeter also known as 1/8 inch mini-jacks.
Then here, we have S/PDIF or SPDIF.
And that stands for Sony/Philips
Digital Interconnect Format.
What we see here is known as TOSLINK.
And what that does is it delivers high quality digital sound
over fiber optic cable.
It's also known as a digital optical port.
And a lot of audio files will consider this
to be sonically superior
to using this main stereo line out.
So you'll see that sometimes.
S/PDIF, that's also referred to as SPDIF.
And we have two ports on this card.
We have the gray, which is the output,
and we have the black, which is the input.
So you wanna remember those for the exam.
On this integrated set of sound ports,
we only have the optical digital line out,
and that's common on today's computers.
You know, you might use this as a line out
to a specific audio device.
This particular sound card has the line in as well,
in case you have a audio processor or other mixing board
or something that can actually send that output of music
or other audio data.
And you would input that there.
Let's show the audio ports on our AV editor now.
Okay. So we have an integrated set of sound ports here,
and it's basically the same thing that we were
showing before.
And they're well labeled with this panel
that they give you with the motherboard.
And so here we have the pink, which means it's mic in only.
And we do also have the blue, which is line in.
So if you want to connect from a smartphone or something,
you would use the blue.
If you have a headset with a microphone, you'd use the pink.
Then here we have the green, which is our main out.
So if you have stereo speakers or you wanna use headphones
or you wanna line it out to a stereo system,
or what have you,
then the green is what you're gonna use, that lime green.
And then we can do 5.1 Dolby surround
by using these other two ports
in addition to the green.
You have your rear speakers,
and then you have your center and subwoofer here.
And it's all labeled.
And then also we have an output SPDIF
that uses TOSLINK
And if you look here, this pad right here,
I can push that right in actually,
and the optical cable goes directly in there.
Now, when you buy these TOSLINK optical cables,
they come with little caps,
and you wanna take the cap off before you plug it in,
otherwise it won't fit.
But you wanna keep those caps on
until you do plug it in,
cuz this actually sends light.
It sends photons through the cable,
and that's what the audio signal is sent as.
So you wanna keep that connector really clean
and covered until you plug it in.
So those are our audio ports, pretty basic.
And so make sure you know each of these for the exam.