Spectral Noise Reduction effect doesn't do anything.

This is on the track based effect.
Title says it all.  No matter what settings I apply, I hear absolutely no difference in the audio track.
Does this work for anybody?

I'm going to make a judgement that Spectral Noise Reduction just doesn't work, then.  It has a pretty interface, that does change colors when you move the parameters around, but I sure can't hear any effect that all that parameter changing is doing anything to the audio.
True, Audition does have pretty decent BBNR, but I'd rather not have to leave Pr when I can avoid it.  The back and forth between the two apps aren't as seamless as many people think.  I'd rather not create new media until after it's processed. 

Similar Messages

  • Noise reduction effect

    I am trying to reduce the background noises in a voice recording from  video shot at a Gas Station with  loud vehicle noise in Audition. I do not want to eliminate the sounds altogether but lower them quite a bit. I watched the Tutorial on the website by Mr. Levine but with the variance and number of controls I am finding it difficult to get the same results as he did in his example. I have multiple clips of this kind and would like to streamline the process.
    Is there a sweet spot for the Spectral Decay Rate, Precision Factor, Smoothing and Transition Width in the advanced settings in the Noise Reduction Effect to reduce loud background noise from  a voice recording without producing the tunnel like echo in the voice after the effect is applied?

    Werlien wrote:
    Is there a sweet spot for the Spectral Decay Rate, Precision Factor, Smoothing and Transition Width in the advanced settings in the Noise Reduction Effect to reduce loud background noise from  a voice recording without producing the tunnel like echo in the voice after the effect is applied?
    Firstly, no there's no sweet spot. All noise is different, and comes in different quantities. Secondly, variable noise, of the kind you get on a garage forecourt, is very difficult to treat anyway. The basic NR in Audition is designed to deal most effectively with fixed noise sources and not variable ones. That said, if you have a fixed level of background noise as well as some variable noise, you can generally reduce the fixed noise to a degree, even if it doesn't touch the variable stuff.
    In general, for variable noise reduction, you need to use the Adaptive settings, but you have to be careful with these, and the results are never going to be that wonderful, quite frankly. You may need to play with the settings quite a bit to get any sort of an acceptable result at all.
    If you use the basic NR system, the best way to use it is to do more than one pass, at different FFT settings - at least one low setting, and at least one at the highest setting there is. And at each pass, don't try to take off too much. The results you'll get like this will be much better than any attempt to optimise a single pass will ever be. Please note that for each different FFT setting, you will need a new noise sample. By and large, leave the rest of the controls at their defaults, although you may wish to reduce the spectral decay rate back to zero for multiple passes - it can make the transitions sound even weirder when you go from wanted signals to the background sound. By using multiple passes with less reduction on each one, you will pretty much eliminate the need tor spectral decay.
    I suppose that the ultimate bad news about NR is that unless you're incredibly lucky, it never works particularly well until you've made quite a bit of effort with it. It's not that unusual to go back to the start of a NR session and start over, using completely different settings before you get anywhere at all.
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  • Can't find NOISE REDUCTION EFFECT in PPRO CS5

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  • Noise reduction (audio) doesn't seem to work - what am I missing?

    Hi,
    In a clip that I'd really like to use, there is a pervasive buzzing hum throughout, especially noticeable in long shots where there isn't any competing or overriding sound.
    I've read the instructions in the manual for taking and saving a noise print of the noise itself (there is a perfect segment in the clip to use for this), and for applying it to the entire clip by Selecting All and going to Process>Noise Reduction>Reduce Noise, then applying the saved Preset.  Also watched the video, which gave exactly the same directions.  The Noise Reduction line appears in the Actions tab underneath the clip name, and it looks like it's processed, but when I bring the HUD up and hit the Play button, nothing has been removed.  The offending sound is still there.
    If I click on the Noise Only box in the HUD, there is no sound at all, which seems to indicate that Noise Reduction hasn't actually been applied.
    I've deleted the file from Finder and started from scratch twice, but still can't get it to work.
    Obviously the Noise Reduction can't just "not work" - so as a new user of Soundtrack (3.0.1), what have I not understood?
    Thanks,
    Marg

    When you get to Process > Noise Reduction > Reduce Noise, usually a preset isn't the answer, but some manual fiddling. 
    Here's the way I approach this:
    1. When I set the noise print, I play/loop the clip and note the level of the noise in your meters. When I get to the threshold in the noise reduction window, that level will be the extreme highest threshold I use, only going lower from there.
    2. When it comes to the reduction, I check the Noise only box while I'm setting it, and boost the reduction until I'm getting noise, but not too much signal I want to preserve. If I hear voice in there, I'm doing too much. And I rarely end up going beyond 60%.
    3. Uncheck the noise only box, and listen to the signal with noise reduced to fine tune further.
    Remember this is noise reduction, not noise elimination. And, the STP tool is pretty good for what it is, but it's not anywhere near the best out there.
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  • Noise Reduction Export

    I used noise reduction on a clip with a fade in, but when I export the noise reduction doesn't kick in for the first second of audio. Does this have something to do with doing a fade in?

    I'm having the same problem...in Premiere, when I play through the timeline, the noise reduction is applied very effectively to every clip.  You never hear the background noise.  However, when I export and playback in QuickTime, every time a new audio segment begins in the video, the first few seconds play the original, unaltered audio (with no noise reduction), then suddenly the noise reduction kicks in and audio sounds good.
    Here is a export that demonstrates the problem pretty well:  https://vimeo.com/47687525
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  • Wind Noise Reduction

    I'm using PPCS3 for a project and have a video interview piece that was shot outside. The subject was wearing a lav mic with a windscreen on it, but there is still a considerable amount of wind noise coming through. Can anyone suggest a way to at least reduce the wind noise without reducing the vocal quality too badly? I have the entire CS3 suite, so Soundbooth is also available to me.
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    Hi there Bill, or anyone else that could help,
    I too have a wind problem!
    I'm using CS6 Master Collection, pretty new to everything so please go easy.
    I have a fair bit of open air footage with a huge amount of wind noise. I have played with the Noise Reduction effect in Audition (as there doesn't seem to be Soundbooth any longer?) but i have literally 'played', i mean i don't really know what i am doing. It doesn't seem to reduce the wind noise more just all noises, which obviously isn't that helpful.
    Are you able to give me any help, point me in the direction of a tutorial, or better yet if you know a program / plug in that really gets to grips with wind noise?
    It seems that most of the time people are wanting to use noise reduction to get rid of a constant, set noise like a hiss but wind noise is totally different as it’s a very dynamic noise, constantly changing so you can’t 'sample' a section as the next section might sound different but is still just as unwanted.
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  • Adjustment brush with exposure setting cancels noise reduction

    Hello,
    I just noticed the following problem:
    1) Camera Raw 6.5; Bridge CS5 (4.0.5.11); Mac OS X 10.6.8; Mac Pro 3,1; Dual Quad-Core Xeon; 8GB RAM.
    2) Start with a noisy raw file (mine is from a Canon 5D II).
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    6) Click Clear All button to clear Adjustment Brush and Noise Reduction works again.
    This seems to only happen with Adjustment Brushes with a non-zero Exposure value (applying brightness or other settings don't seem to produce the problem).
    Anyone else seeing this?
    Thanks!

    Richard (and others),
    Yes, very good idea to check that. The problem does indeed get applied to the full sized, opened image as well as to the display previews. After working with this more, I now notice that I was wrong to say that the entire noise reduction is cancelled - rather it "changes", sometimes subtly, sometimes more dramatically depending on what the noise reduction settings are set to. Further, how dramatic the "changes" appear depend greatly on the preview zoom (the changes are more subtle at 100%, but it can look like the noise reduction is completely turned off at 50% and 66%).
    Now I realize that the noise reduction does not ordinarily display at all preview sizes (especially smaller ones), but this is different. At preview sizes where it does normally get applied, applying an adjustment brush with any non-zero exposure value (even just +0.05) can have the appearance that the NR is completely turned off for the whole image. Simply nudging the exposure value back to zero brings all the noise reduction back.
    Also, to be clearer and avoid confusion for others, the change in noise I'm seeing is not localized to just the brushed spot. Obviously if one increases exposure, you'd expect to potentially see more noise. Instead, what I'm seeing happens to the entire image, even if I simply paint a single small brush dot, say in a far corner. Having the image change globally in response to painting a small spot with the adjustment brush cannot be a correct result. Further, this does not happen with any of the other adjustment brush settings like brightness, contrast or saturation. There must be something unique about the exposure setting that perhaps introduces a new step into the processing pipeline, and this step is affecting the entire image.
    In any case, the problem only seems to be an issue in somewhat extreme cases and is less noticeable at 100% (and the finally opened image). It's more just annoying when previews are generated for viewing in Bridge, for example.
    I suppose one alternative might be to rob a bank and go buy one of those new 1D X's. Then maybe I wouldn't have to worry about noise anymore.
    Thanks for the responses!

  • Noise reduction won't display properly in LR 3.4.1 Develop Module

    I encountered this issue first time last night - noise reduction will not show in "Fit" view of the Develop module for pictures that have a graduated filter applied as well. Having said this,
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    - The pictures display correctly in Develop module when clicking in history on Luminance smoothing (first picture). Selecting the next step in the history, Add Graduated Filter, displays the picture without noise reduction (second picture - I tried on a virtual copy the other way round - first have a graduated filter and then apply noise reduction, but doesn't work either. Noise reduction just won't display in Develop module / Fit View once a graduated filter is applied as well.
    Has anyone else seen this behaviour or, even better, found a solution? I already tried purging the raw cache, no success. Working on Windows 7 / 64bit.
    Thanks,
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    Jeff, I had difficulty understanding this same issue as presented at the link I posted above. With my low-noise Canon DSLR RAW images I simply couldn't see the onscreen rendering issues they were talking about. It even appeared this might be unique to Mac platforms and Windows 32 bit OS, since my Windows 7 64bit system didn't appear to have this issue.
    Following suggestions to shoot a picture at -4 F stops and then increase exposure by +4 F stops in LR helped me get a better understanding:
    http://forums.adobe.com/message/3857767#3857767
    Granted this is an extreme shooting situation, but it helps demonstrate what happens when using exposure, fill and HSL sliders to increase exposure significantly (+2 to +4 EV) in specific areas of the image. Now you have noise that will be visible in smaller exported scaled images, perhaps even those sized for posting to the web.
    The issue is at lower ISO settings (camera specific), view sizes less than 1:1 have no noise reduction applied (Mac & Windows) or sharpening applied (Mac & Windows 32). There appear to be platform differences in the way sharpening is applied, because on my Windows 7 64bit system sharpening is applied at all ISO and all view sizes including "fit" view, but noise reduction is only applied at higher ISO settings – the same as all others have described. I wanted to point this out since it is one of the reason I had difficulty duplicating what the OP was seeing.
    We know sharpness and noise reduction settings interact with each other, so it is important to have both applied in the onscreen image to determine their affect. Using images with additive Exposure, Fill and HSL slider settings approaching +2 to +4 EV, there is simply no way to see accurate rendering without both noise reduction and sharpness applied at all view sizes, including “fit” view. This can occur with low ISO images, not just at some predetermined camera specific high ISO where noise becomes predominant.

  • Noise reduction works in preview but doesn't apply to file

    I have a file that I would like to apply noise reduction to. So in the tasks menu I click Clean Up Audio, then under Noise I click Noise... From there I can play with the Noise settings and get it to clean up nicely. But when I hit OK, it doesn't apply the noise reduction. It seems to be doing something to the audio because the waveform changes.. just not reducing the noise as previewed. Anybody know why it wouldn't be applying the effect? Other audio editing options seem to work just fine.

    It is a 16 bit 44.1 kHz mono sound effect.. it is noisy and sounds like it could have been 8 bit at some point in its life cycle.

  • Noise reduction doesn't work?

    Hi All,
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    Hi carloshl
    Welcome to the world of Captivate!
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  • Noise reduction on PS touch doesn't work

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  • Noise Reduction - Doesn't get quite all the noise

    I'm having trouble removing 60Hz hum. I just got Soundtrack Pro after trying Soundtrack that was included in FCE. I didn't have much luck with Soundtrack and the Apple quick tour made noise reduction in ST Pro look like child's play.
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    I've had good luck using the EQ editor, where you can adjust various parameters like the spread of the frequency, the amplitude, and also check for other frequencies (try overtones undertones of the main sound).
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  • Noise Reduction tool not effective

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    hsbn wrote:
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    EDIT 2:
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    HD Cam Team
    Group of photographers and filmmakers using Canon cameras for serious purposes.
    www.hdcamteam.com | www.twitter.com/HDCamTeam | www.facebook.com/HDCamTeam

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