Remove background noise in Adobe Audition with the ZenBook Pro


Let’s say you’re editing a video using Premiere Pro on the ZenBook Pro. Everything is going well – the NVIDIA GeForce GTX 1050 Ti graphics are applying changes quickly, the big 1 TB x4 PCIe SSD is storing all of your raw footage without a blip. Unfortunately, you’re detecting some background noise being played through the Harmon Kardon-certified quad speaker array. It’s easy for audio considerations to fall at the wayside when shooting and focus exclusively on the visuals, but we have a few tips for cleaning up your sound.

To really get into audio editing, you’ll need Adobe Audition. It ties in seamlessly with Premiere Pro, and if you already have the complete Creative Cloud subscription, you should already have access to it. You can jump into editing in Audition just by right-clicking an audio track in Premiere and clicking “Edit Clip in Adobe Audition”. It’s important to note that unlike Premiere, Audition is a destructive editor, so save an original copy of your audio clip before getting started.

Hiss reduction

The first type of audio fix is hiss reduction. This can be the result of vinyl hiss, or distortion added by an amp. It can completely eliminate noise that falls below a certain frequency threshold.

  1. First, select a noise floor in your clip. This should be a quiet section in the audio where the only sound is the hiss you wish to remove.
  2. Click the Effects menu, Noise Reduction / Restoration, and Hiss Reduction (process).
  3. Click Capture noise floor in the top-left.
  4. Move the Hiss Reduction window so you can see the timeline in audition, then select the section you wish to apply the reduction to.
  5. Adjust Noise Floor and Reduce by sliders until the proper reduction is reached. (Tip: Check Output Hiss Only and click Preview Play/Stop in the bottom-left to hear just the audio that’s being removed).
  6. Click Apply.


Noise reduction

Noise reduction is similar, but in a lot of ways more versatile. It can help to eliminate unwanted background sound at higher frequencies than the hiss reduction tool. The noise reduction tool is often the first pass made before applying other audio fixes. It follows the same process as the hiss reduction above: select the portion of the waveform with only the noise to capture the noise profile, adjust the degree of correction, then apply to the desired section.

These are the two primary means of reducing noise in your Adobe Premiere Pro audio, but there are many more tools included in Audition:

Adaptive Noise Reduction: Quickly cleans variable noise.
Automatic Click Remover: Quickly cleans single clicks or pops.
Automatic Phase Correction: Corrects advanced problems related to misaligned tape heads and stereo smearing.
Click/Pop Eliminator: A more detailed tool for eliminating single, distinct distortions.
DeHummer: A way of eliminating background hum at specific frequencies, often caused by lighting and electronics.

You can learn more about all of these from the Adobe support page.

Tips for getting good audio

In a perfect world, you don’t have to rely on Adobe Audition to fix flawed audio. That involves having the right gear for the circumstance. If you’re relying on dialogue at a medium to long distance and have time to set up, you’ll want to wire up your subject with a lavalier microphone.

If you won’t have the chance to attach a microphone close to your subject (or you just want to avoid the mic showing visually), a shotgun microphone is good for close range and blocking out a lot of background noise. Just make sure it’s pointed directly at the subject, as its field for audio pickup is much more focussed.

Dynamic microphones, like those you’d see being held by show hosts, are suited to harsh sound environments where you’d be dealing with wind, or loud music. Condenser microphones, though more expensive, capture higher quality sound. Use one of these when you’re in a highly controlled settings, such as a sound studio.

Being able to detect these audio imperfections relies on having great laptop speakers. The ZenBook Pro reproduces a 160% larger sound frequency and 250% more volume than competing PCs. This premium sound system will without a doubt help your audio editing. On top of that, the 7th Generation Intel Core i7 processor and up to 16 GB of DDR4 RAM combined with discrete NVIDIA graphics will render edits and final products incredibly quickly. Also, the ASUS Giftbox app preloaded on the ZenBook Pro includes a discount on your Adobe Creative Cloud subscription

Learn more about the ZenBook Pro here.