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PG_93
PG_93
Participant
July 25, 2017
Question

Noise Reduction Destruction

  • July 25, 2017
  • 1 reply
  • 5988 views

Hi Adobe Community,

I am currently working on an audio strip that contains an interview of a friend for a video that I first worked on in Premiere Pro -- I merely wanted to reduce the background noise within the clip so I exported and imported the clip into Adobe Audition. This is my first time using Audition so I was following some tutorials and it had me take the 'noise print' of the background noise I wanted to eliminate and although it did minimize a majority of the noise in the background it seemed to greatly affect the main audio foundation of the interview. Then my friend's voice became very gurgily and some what metallic.The tutorial did advise me that this would happen since noise reduction process is a very finicky and powerful tool. Later the tutorial had me use 'adaptive noise reduction' to take care of this gurgily and metallic sound. However, this only took care of some more background noise and hardly touched the distorted sound that was affected after reducing the noise.

I had the noise reduction bar setting in 'noise reduction process' around 80dB and the 'reduce by' setting at 30. My advance settings were:

- Spectral decay rate: 10%

- Precision Factor: 15

- Smoothing: 900

- Transition Width: 15 dB

I didn't think that was too bad and I recorded everything on a rode mic. I have fiddled with these settings all I can, having some up and some down and nothing seems to get rid of this metallic gurgily effect. Honestly, I have followed many tutorials about this issue but I can't seem to find one that can directly pinpoint that gurgily after effect once the noise reduction is applied. Any help to solve this issue would be greatly appreciated! Thanks everyone!

Here are the links to some of the tutorials I followed:

Advanced Noise Reduction in Audition - YouTube

Removing Background Noise From Audio With Adobe Audition CC - YouTube

How To Make Your Voice Sound Better (Secrets Revealed) - YouTube

HOW TO MAKE YOUR VOICE SOUND PERFECT FOR VIDEO | AUDITION CC TUTORIAL - YouTube

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      1 reply

      ryclark
      ryclark
      Participating Frequently
      July 25, 2017

      The artefacts that you are hearing are due to trying to remove too much noise all at once. The general advice is to do several passes at no more than about, at the most, 10db of noise reduction. Increase the FFT size at each pass and take a new noise sample for each.

        PG_93
        PG_93Author
        Participant
        July 26, 2017

        Hi ryclark, I really appreciate you responding so quickly. I took your advice and slowly applied smaller reductions with increasing FFT sizes with each pass. Though I didn't hear the audio getting any better, I feel it just continued to get worse.

        Does the percentage of the Noise Reduction stay at 10% and the Reduce by setting at 10dB as well, or should those change with each pass? And as far as the advanced settings should I just leave those alone? Thanks!

        PG_93
        PG_93Author
        Participant
        August 1, 2017

        PG_93  wrote

        I'll try posting the recording on Dropbox, but I assume I would need your emails for you to be sent it or view it. If that is alright with you. I've already posted it. Let me know!

        If you post it into Dropbox's 'public' folder, you can right-click on the file and get a direct public link to it. All you have to do is copy that, and post it here...


        Sorry for responding so late, but here is the link to the audio file:

        Dropbox - WNAUDIO.wav

        I could use all the help I can get, I really want the audio to sound good!

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