Audio Post Production Premiere Pro

How to Remove Background Noise, Buzzing, Hum in Premiere Pro

[mks_tabs nav=”horizontal”]
[mks_tab_item title=”Overview”]
Do you have a noisy background in your audio file? Adobe Premiere Pro has a filter called adaptive noise reduction that can take care of unwanted background noise.  The only problem is, it takes a couple of second to kick it and that causes problems in the edit.

But there is a better way to use it.  You can tweak some settings to make adaptive noise reduction kick in even faster.

Try increasing your signal threshold under settings to about 10db.  This depends on your audio file, but this usually does the trick and adaptive noise reduction stars working within a second to remove unwanted background noise.

Next, you want to apply the filter in the audio track mixer instead per individual audio clip.  This will create a global effect for your entire track.

If you want to get more in-depth with removing background noise, open the file in Adobe Audition.  Here, you can select the unwanted noise print and remove it from the rest of your track.

Video by Tutvid

[/mks_tab_item]
[mks_tab_item title=”Transcript”]

and so my fellow Americans ask not what
your country can do for you ask what you
can do for your country
my fellow citizens of the world hey
everybody I’m Nathaniel Dodson from Tut
vidcom we’re going to talk about premier
pro today specifically the much-maligned
adaptive noise reduction feature which
is well known or infamous I should say
for the two second or so delay where you
apply it to a clip and it’s been this
way for years apply to a clip and it
sounds really really bad for a couple
seconds and then adaptive noise
reduction does the adaptation part and
finds the noise and then it sounds
usually pretty good the first couple
seconds really really bad and it doesn’t
really seem to be a way around it
you can pre render your clips and render
your clips and just nothing really seems
to work but I think I have a solution
this is the way that I typically work
with adaptive noise reduction especially
when I have a track with multiple clips
because every time a new clip starts
adaptive noise reduction wants to re-up
and retry to adapt and if you have a lot
of clips there’s only a couple seconds
long that you’re cutting together for an
interview or a vlog or something with a
lot of jump cuts
it’s basically worthless but using this
technique I think you’ll just like it
now if you want more Premiere Pro
tutorials make sure you subscribe to
this channel you’re never going to miss
any more tutorials in the future and I
think you’re really going to like that
ah yeah let’s jump in and check this out
so here we are for those of you that
have never used adaptive noise reduction
before let’s just do it real quick so go
effect and I’m just going to type in
adapt there it is adaptive noise
reduction I can drag and drop it on this
audio clip and I’m going to I think I’m
going to leave all of the features and
up here in the effect controls you have
the ability to edit the adaptive noise
reduction I’m going to leave all the
defaults as they are and let’s just
listen here to this clip and so my
fellow Americans ask not what your
country can do for you and you can hear
how very suddenly that air conditioner
running in the background you can hear
you can hear you can hear it and all of
a sudden you can but the problem is half
of the first bit of stuff I’m saying you
have that air condition sound in the
background and it just very suddenly and
unnaturally goes away not really
something you can deliver to a client
but before we get into solving that
problem let’s break down what adaptive
noise reduction is so we can better
understand it
that’ll help us a little bit so I’m
going to hit the edit option here and we
have some features number one reduce
noise by so we’re doing reduce noise by
this is the number of decibels we’re
going to reduce the unwanted noise
Premiere Pro will seek out the quote
unquote bad noise automatically and this
is the number of decibels by which we
will reduce it 20 decibels in this case
but we can always drop it down we can
boost it up now noisiness
this is the amount of the original audio
that we believe has the bad noise in it
so we’re going to say like hey yeah kind
of examine like 30% of the audio but
honestly it’s a really vague slider and
I’m spitballing a little bit here when I
tell you what it does this is kind of
what I’ve noticed it does but I haven’t
really found – too much solid
documentation maybe I just haven’t
looked hard enough that may be the
problem but that’s the noisiness slider
that’s how I use it now fine-tune noise
floor this is the level below which a
Premiere Pro will just reduce all audio
to zero decibels so we’re basically
telling Premiere Pro look anything below
2 decibels just dump it all together
make it just go right to zero there’s
probably just a lot of bad noise down
there anyway now signal threshold this
is the level above which Premiere Pro
will not touch with this effect so we’re
kind of cutting this thing off at about
two and a half decibels here again you
can boost to reduce the signal threshold
and this actually I found is kind of
like the secret hidden ingredient if you
boost a signal threshold for the most
part to around 10 decibels notice I
meant this all depends obviously on the
type of audio you’re working on but for
a lot of talking head stuff you boost
around 10 decibels it seems to jump in
and start working within less than half
a second and you don’t have this long
protracted you know 3/4 second full one
second one and a half or two second
delay before the adaptive noise
reduction kicks in it’s still not
perfect but this is the little trick the
signal threshold but there’s something
else that we’re going to do for tracks
multiple clips so hang on I’ll show you
what that is in a second now spectral
decay rate this is how long in
milliseconds here 140 milliseconds in
our case this is how long in
milliseconds premiere will hold the
correction it’s making before reverting
to no adjustment at all now you want to
be careful with this setting this either
too long or too short can give like this
tin ear obody sounding voice almost it
just introduces strange sound especially
as your audio is going to move in in and
out of bits of speech or blasts of music
think if you’re having an interview or
two spoken
video you can have a lot of bizarre
sounds on the edges of the words when
you’re kind of stopping talking or
starting up talking if you kind of mess
this up so just don’t go too crazy with
it but still play around and see what
makes a difference with your particular
with your particular audio track now
broadband preservation this essentially
sets a window within which Premiere Pro
will target and remove so at the default
of a hundred Hertz here
it’s basically setting a window of 200
Hertz all sound here 100 Hertz greater
and 100 Hertz quieter if you will 100
Hertz lesser really I should say will be
removed or really not removed but be
targeted with our adaptive noise
reduction so this will this will kind of
help us this is almost like a little bit
of a global reigning in if you will and
if we want to boost and expand the
effect push up to 200 300 400 whatever
other default here is 100 Hertz and then
FFT this is something called fast
Fourier transform it’s just about the
range of frequencies that adaptive noise
reduction will examine but I’m honestly
really only mentioning that because I
want to make myself sound smart and it’s
just usually something you’ll be fine if
you just leave it here at the default
512 usually works sometimes I’ll find
that it bumps me up to like 2048 but I
usually don’t mess with the FFT size I
just leave it how it is so that’s a
quick overview of adaptive noise
reduction I’m going to delete that
adaptive noise reduction in fact I’m
going to delete this whole audio clip
I’m going to move to the beginning here
of my audio track and I have this audio
here with a loud air-conditioner in the
background and it is six different clips
so if I add adaptive noise reduction to
each of these clips each clip adaptive
noise reduction needs to like read up
itself and you’re gonna have a really
janky sounding final finished product so
how do we fix something like this we’ll
check this out
this is something I don’t know that I’ve
ever seen in another video tutorial
we’re gonna go window we are going to go
Adobe Adobe we’re going to go audio
track mixer here and we’re going to
choose to work here on our audio one so
I’m going to just drag this downward a
little bit here so you can see what’s
going on in fact I can just scroll down
so audio ones where we want to work and
you’re going to have this is what you’re
going to see when you bring this up but
what I want to do is there’s this tiny
little arrow right up there we’re going
to click on that and we open up the
effect controls area so I can I’ve got
all these slots where I can add effects
here we’re at five different slots so I
can just hit the drop down and I can
choose no
reduction slash restoration adaptive
noise reduction so what this is going to
do is this is going to apply globally
and adaptive noise reduction across this
track at like the track level so
adaptive noise reduction only has to
adapt at the very beginning so here I’ve
got all these different things that we
just talked about reduce noise by I’ll
push this you click on the little dial
and just scroll push them out straight
ultimately push this up to 30 and of
course I need to go with the signal
threshold I’m going to push this up to
like 10 or so and I think I think that’s
pretty much all I want to mess with
everything else is pretty good at the
default so now what I can do is I can
just begin this here and I’m going to be
quiet for a second so we can just listen
to this and you’ll notice as each new
clip begins the noise reduction is just
there and so my fellow Americans noise
reduction worked it was just a very
split second at the beginning you heard
like a whoosh and so my fellow Americans
ask not what your country can do for you
ask what you can do for your country
so there you go across all of these
clips it’s going to work and it’s just
by using the audio track mixer and of
course making adaptive a noise reduction
work faster it’s all about that signal
threshold that’s what I found it’s up
around 10 you’re probably going to be in
not in like amazingly perfect shape but
in much better shape than your long long
two-second delay now before we take a
look at kind of a little bit more of a
quote unquote right way to do this one
little cheat that I’ve noticed you could
do is you have this volume bar here in
your audio you you can’t completely get
rid of all the audio at the beginning of
a clip but if I hold down command or
control and add a couple little
keyframes here I can just drag down and
maybe like cut the audio in half to make
it a little quieter there where I’m just
kind of capturing the noise print of the
room and it’ll it’ll you know hide that
initial bit a little bit you might still
need a little music to help cover it up
but it you know every little bit helps
right and so my fellow Americans ask not
what your country can do and you get a
pretty decent cleaned up a bit of audio
working with the shortcomings of
adaptive noise reduction which you know
literally have been a problem with this
effect for years and Adobe still has not
fix them it seems like it must it must
just be a very complicated fix but let’s
take a look here I’m going to delete
these audio clips I
another copy of this audio but with a
like strong electronic buzz in the
background here check this out well you
can hear that it basically all goes away
right why because I still have that
adaptive noise reduction there I’m going
to get rid of the adaptive noise
reduction because I want to show you a
different way to do this check out how
loud and strong this buzz is right very
very annoying so if you have the
Creative Cloud and you have adobe
audition the best of the best of the
best way to get rid of background noise
is it’s fast and it’s very effective
right click on the audio clip choose to
edit the clip in Adobe Audition Adobe’s
dynamic link will ship it right over to
Adobe Audition
you can hit the letter T it’s just going
to make sure you have your a time
selection tool selected and we’re going
to select an area of our audio that just
has that annoying background noise just
that buzz right there right it just has
that really annoying buzz so we’re going
to do that and we’re going to come
effects we’re going to go noise
reduction and we’re going to tell
audition to capture the noise print and
it’s going to say look you capture this
noise print for use in the noise
reduction effect so I’m going to say yep
great that’s cool and we want to
deselect this so we’ll go edit select
and just choose to deselect all now we
want to affect the entire clip so we
don’t need to select anything at this
point we can just go effects noise
reduction and choose the noise reduction
process and you can see all this
fancy-schmancy stuff is in place for us
already we could play around with the
amount of noise reduction sometimes 100
percent to not degrade it something in
the high 80s low 90s works a little bit
better and we can just go ahead and
apply this and you can see look at that
I mean right off the bat we can tell
it’s literally flatlined that noise all
of our audio is there we can just save
this file command or control s we can
close out audition at this point if we
want and it’s going to return you can
see we have a second buzz to file so you
buzz to audio extracted wave and it
automatically replaces it here in our
timeline and if I listen through this
there’s no buzz and so my fellow
Americans ask not what your country can
do for you ask what you can do for your
audition does an amazing job and you can
see just how fast that is
now we didn’t sit there and go over
every you know Tom Dick and Harry effect
in the adaptive noise reduction there
like we did here in Premiere Pro we just
sent it to audition wiped it out and
brought it back you can see how stinking
fast that is it’s really
pressive so if you have audition that’s
really the way to go but this is a
premier pro tutorial and if you’re
forced to work in Premiere Pro with
adaptive noise reduction or even the old
D noise or effect which is now obsolete
in the newer Premiere Pro CC editions if
you’re forced to work with it that’s how
I work with it it pretty much gets the
job done it’s still not perfect it’s
definitely not what I would consider a
professional applica not application
like a professional result if you will
but it’s passable and if you’re kind of
creative and you shuck and jive with it
a little bit you can get the job done so
for adaptive noise reduction really
removing noise background noise
background hum buzz any of that annoying
stuff from your audio in Premiere Pro
guys that’s it get got it good neva no
Dodson Tuck vidcom I’ll catch you in the
next one
and before you go make sure you
subscribe to my channel for more great
tutorials every day also by my course
that helps us do what we do and this
channel is supported by viewers just
like you you can also just click the
thumbnail and watch another video from
this channel see you next time guys

[/mks_tab_item]
[/mks_tabs]

Comments