Hi,
Just after any advice anybody has.
I’ve been experimenting with Noise Reduction on a 15 second audio clip. I’m trying to extract a voice in the background of a webcam recording, but amplifying the audio results in a lot of noise.
After playing with each of the settings, I’m trying to understand the following:
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If your audio input is low volume (background audio), when you amplify it the noise is much more noticeable. Should you perform noise reduction before amplifying the audio, or after? Does the noise reduction tool detect the noise better if the waveform is amplified?
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Is it better to try and get the result you’re after from one use of noise reduction? Or should you perform a low dB noise reduction across the clip, then amplify what’s left, and do the noise reduction again?
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I like the Residue setting for checking if anything important is removed. What I tend to notice is that in the Residue output, wherever the target sound is you get this kind of “dimmed” effect on the noise. I assume this is a healthy indication that I am not impacting the target sound?
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Why would you have a reduced Sensitivity value? As far as I can tell, maxed Sensitivity with a Frequency Smoothing of 1 should always be the ideal setting?
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Are there any tutorials or examples with images of the effects that these settings have on the waveform? I find it easier to visualise the result than read it.
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Would you ever use Frequency Smoothing at zero?
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Quite often the Noise Reduction will reduce the volume of the actual audio to be captured, and a straight forward amplify tends not to fully amplify the whole waveform because somewhere in the waveform part of the wave would be clipped if it amplified the audio any further. I’ve yet to play with the Compressor options but is there a recommended approach to restoring volume after noise reduction has reduced it?
Regards,
Rob.