How to Improve Audio Quality with Adobe Audition
Andrei Cucleschin, 08 July 2019
Andrei Cucleschin, 08 July 2019
This blogpost will talk about How to Improve Audio Quality with Adobe Audition. Follow our step-by-step guide and take your audio quality to the next level.
Today we’re not going to touch upon the recording part, but we’ll focus on the simple editing techniques and especially how to improve your audio auality with Adobe Audition. And if you use free software like Audacity – you can still follow along, since the procedures are almost the same. However, if something doesn’t match, take a look at this article on How to Improve Audio Quality with Audacity.
We assume, that your recording is of decent quality with no major problems. And in case you’re just about to record something, be sure to skim through our post on how to improve your audio quality and optimise the transcription of speech to text for some tips.
This is perhaps the most important step of the entire workflow. Luckily, nothing could be easier. First, you need your “room tone” for that. A room tone is a ‘natural’ sound of your room or location. Don’t confuse it with complete silence though, the room tone is a mixture of low-volume sounds, that take place within your environment and makes up the background noise.
You might not necessarily hear all of these sounds, but your microphone does pick them up. Examples include noise coming from computer fans, air conditioning or power sockets.
All you have to do is to record 5-10 seconds of silence – that will be your basis for noise elimination. If you forgot to do so deliberately – don’t worry, you probably have pauses where you don’t talk, we can also use those smaller samples.
Please note, that the position of the microphone in relation to your room plays a role, so if you record something in a different spot – you’ll likely have a different room tone.
Now, that the theory is covered, let’s get to practice.
No matter what it is, an interview for your thesis, a podcast or a speech – every recording will have small or larger gaps of silence. You can easily find silent fragments of your audio by looking at the waveform (highlighted on the screenshot)- it is flat and static.
Depending on the length of your audio, you can either cut these parts manually or automate the software to do it for you. In both cases make sure not to delete the silence completely, but to shorten it. Otherwise, your audio will sound unnatural and rushed.
These terms might sound difficult, but they stand for very simple processes. In essence, normalizing is a relative volume adjustment, while amplifying is absolute.
Normalizing audio means setting a peak or target volume for a certain part of the audio file, meaning that quiet areas will be raised to a certain volume, while the loud ones will be brought down or remain untouched.
For instance, if you’ve recorded an interview, normalizing your audio can bring all the voices to a certain level of volume, making sure that neither of them is too quiet nor too loud.
Amplifying means increasing/ decreasing the volume of the audio fragment by a certain amount. What it means is both quiet and loud values will be affected in the same way.
You can use this feature if the entire part of the recording is too quiet or too loud.