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How to Use Noise Reduction Adobe Audition

Adobe Audition is a professional audio workstation that is used to design, mix and create sound effects. The software is one of the industry’s best for audio digital editing. The toolset includes waveform, multitrack and spectral display that allows users to restore, edit and mix audio content. It also delivers a pristine sound with a polished mix and accelerates audio finishing and video production workflows.
Within the program, there is the option to reduce background noise when working on a project. Noise reduction in Adobe Audition allows you to fix a long list of audio problems with two essential features: Noise Reduction or Diagnostic and Spectral Display.
Common Problems
The noise reduction in Adobe audition can reduce or remove background noise like tape hiss, wind rumble or power-line hum, phase cancellation caused from misaligned tape machines or poorly placed stereo microphones and crackle from old vinyl records or wireless microphones. 
Applying Noise Reduction
The Noise Reduction effect is only available in the Waveform Editor format, but only makes minimal reductions to signal quality while dramatically removing broadband and background noise. Any noise that is constant in a waveform can be removed. High audio quality can be retained with an increase of the signal-to-noise ratio of 5 to 20 dB, although the correct amount to apply depends on the acceptable quality loss for the signal and the background noise type you are trying to remove. Here’s how to apply it:
  • When in Waveform Editor, select a range that is half a second long and contains only noise
  • Use the Marquee Selection tool to select noise within a specific frequency range
  • Select effects, then noise reductions/restoration, then capture noise print
  • Select the range where you want to get rid of noise from the Editor panel
  • Now, choose effects, then noise reduction/restoration, then noise reduction
  • Set your preferred options
The noise reduction options include save current noise print, capture noise print, load noise print from disk, noise floor, scale, graph, select entire file, channel, reduce by, noise reduction, advanced settings, channel, spectral decay rate, smoothing, transition width, FFT size, noise print snapshots and precision factor.
There is also an adaptive noise reduction effect in Adobe Audition that works to remove rumble, wind and background noise. In combination with the Multirack Editor and the Effects Rack, this option differs from the Noise Reduction because it is available in real time.
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