Audio noise reduction in iMovie 09?

I have some video shot with a Nokia N95 mobile phone. Some of the audio is recorded directly with the phone, some experimenting with connecting an external microphone. The sound recorded with the external mic is better but I still get a lot of noise / hiss. I think that with iMovie 06 (which I no longer have installed and can't download from the Apple site) there was a relatively simple noise reduction filter. I can't see how to do the same with '09. Any suggestions on how to (rapidly) clean up audio from mobile phones (or from video shot with digicams, for that matter)?
And if anyone has any tips or hardware hacks that would allow me to improve the sound while filming with a mobile phone I would be very interested to hear them.
Many thanks!

I have the same problem. The best imovie is and the only solution to this problem is the imovie HD. I can't belive what's happening with the imovies... What's happening with apple software? What's happening to apple??

Similar Messages

  • How do I permanantly apply audio noise reduction in FCP X

    I have a clip shot on a blue screen set that had some noise in the background (constant hum from air conditioner). The Background Noise Reduction in FCP X, applied at 100%, does a truly amazing job. But there is one huge problem. It appears that FCP X "learns" as the clip is played, perhaps taking it's own noise print of the background noise, and applying it on the fly. Because for every clip I apply 100% background noise reduction to, that clip begins playing and you hear the full audio with noise. After a few seconds the backgroun noise begins to fade away. After playing for about 5 seconds, the background noise is completely gone. And it's freaking amazing. Better than what I've ever been able to accomplish with Soundsoap or other programs. But the fact that it must do this on the fly each time means it is unusable to me. I can't have each clip in my timeline start with noise, then have the noise drop out after a few seconds. Is this a bug? Am I doing this wrong? There are really no settings. You either have Background Noise Reduction on or off and set your percentages.
    I am fixing audio on a 1 hour program. Really need this to work. Anyone else having the same problem, or found a solution? Or know what I might be doing wrong?
    Paul

    Paul Kakert wrote:
    The Background Noise Reduction in FCP X, applied at 100%, does a truly amazing job.
    Does this mean you actually like the audio to sound as though it was recorded under water? I guess it depends on the amount of noise that requires removing, but I've never been able to tolerate more than about 40% before the audio gets horribly distorted.
    I really don't share your experience of FCP X removing background noise 'on the fly' (sorry).
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  • Video noise reduction software?

    Sorry... but I've asked this question in the Tiger OS forum about video noise reduction for iMovie HD 6 and/or QT files but haven't got far with it.
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  • Noise reduction (process) on HD video's audio with shotgun microphone (hissing)

    okay so i normally master live sets on the condenser microphone in my teams studio but it is not available to the public so i've started doing freestyles, when i use the noise reduction (process) on the audio of my HD videos to remove background noise which my camera is intaking for some reason unknown (on both shotgun and camera) this is without any corrections on, everything on manual etc so nothing to cause the distorted hissing sound.
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    www.youtube.com/ohnoloweit for UK Grime music

    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.
    Good luck, and I hope this helps!
    Matt

  • 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.
    Good luck, and I hope this helps!
    Matt

  • Noise reduction did nothing - no instructions for the process

    I entered noise reducer in the help menu and "what's new in imovie comes up" - I am looking for info on the process to apply noise reduction and nothing applied even two layers down in what came up in "what's new in imovie".
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    Can anyone help,
    jim

    No, but the Help menu in iMovie does:
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  • 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,
    New user here (testing the demo). I have a moderately loud
    air conditioner system, and as a result there is a constant hum.
    I'm trying to get the noise reduction to work, but to no avail.
    Here's what I do.
    I record a clip. then select Edit Timing. Then Adjust Volume.
    Then check "Dynamics (boost quiet sections), then I play with the
    Noise Threshold and Ratio sliders (primarily Noise Threshold).
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    What am I doing wrong here? Thanks!

    Hi carloshl
    Welcome to the world of Captivate!
    Seriously, the audio editing bundled inside Captivate is
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    The really super good news here is that your investment need
    not be cash! There is a wonderful and totally free audio editor out
    there called Audacity. You may download it by
    clicking this magickal
    link.
    Oh, and you should probably also find a quieter room to
    record in.
    Any possibility of turning off the air for a brief
    period?
    Cheers... Rick

  • Audition CS6 crashes while running Adaptive Noise Reduction

    Hi everyone!
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    Srivas 108 wrote:
    The system is Win 7 64 Home Edition. It was working ok before. Maybe I should install all the updated? I hate to do that, my experience is that it slows down the system in the long run, but looks like I should do that.
    I run the pro version, but it's basically the same. I've got all the updates installed, but I haven't noticed it slow down at all. Mind you, this is a fast system anyway. But if it's crashing, then installing updates won't fix that; you need a fresh reinstall on an absolutely clean disc first. Okay, that's a pain - but look on the bright side; you aren't running Windows 8. Recently I wasted nearly a day of my life on that, and I'll never get it back. The basic rule about M$ OS's hasn't changed - it's only the odd-numbered ones that are worth bothering with, as a rule. And none of them are worth installing until the first service pack is issued.

  • Noise Reduction process in Audition

    I have a talking head video with a lot of background noise. 
    I first selected both audio and video tracks and right-clicked to Unlink them. 
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    When I follow the instructions and change the FFT to the smallest size option (512), it still doesn't work.  I have tried strining a few short background noise clips together, but it doesn't work.
    Questions:
    1) How long does a backgroung noise clip have to be?
    2) What does FFT stand for, and why are the number options in that dropdown menu as they are?
    3) How can I get this to work?

    Dinaspark wrote:
    Then I selected the audio track and right-clicked to Edit in Auditon. 
    In Audition > Effects menu > Noise Reduction > Noise Reduction process, I hit the Capture Noise Print button, but an error message comes up stating my clip is too short. 
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    Questions:
    1) How long does a backgroung noise clip have to be?
    2) What does FFT stand for, and why are the number options in that dropdown menu as they are?
    3) How can I get this to work?
    1) You can get away with as little as a quarter of a second, depending on the FFT size. If you use a large FFT size, the analysis window won't be large enough.
    2) FFT stands for Fast Fourier Transform. In this context, the numbers relate (in simple terms) to an analysis window. Smaller numbers generally make a better job of low frequency noise reduction, and are quicker to apply, but larger numbers generally do a better job overall, if you have a large enough noise sample and don't mind waiting longer for the results. This isn't a precise science; you often have to experiment a lot to get a good result, and it's very easy to overdo it. In CS6 there are alternatives as well - you might try the automatic adaptive NR process successfully on some material, but generally the full-blown version works better.
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    3) Read and understand this post, and its implications!

  • 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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    Also, any idea why Adobe Audition does a better job than Soundtrack Pro in this quick NR area? Am I missing something that I should be doing in Soundtrack Pro?
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  • Noise Reduction Export

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    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.
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    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.
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