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Can I get rid of humm noise in audio?
Hi All,
First off let me state that I am a real rookie when it comes to audio. With that in mind, this is my problem. I have some footage shot on a camcorder that has been captured in Vegas(5). Unfortunatly the audio is very low so I need to kick up the volume. When I do that a slight humming noise can be heard. Is there a way for me to get rid of this? If so, how?
Thanks
Dave P. -
6 Replies
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First question, do you hear this hum when playing other audio files? need to isolate the source as it could be a feedback loop or some weirdness going on with your soundcard, etc.
Second, if the hum is part of the source audio file, in otherwords a noisy recording.. a ground loop.. or just the noise floor itself.. when you bring up levels, it will be accentuated.
There is a chance that DC OFFSET will eliminate it. I know Sound Forge has this feature. Sometimes eliminating the DC OFFSET completely removes the hum. There are a lot of other options, but most require plugins, etc. They are..
-Noise Reduction. Sonic Foundry (err Sony) makes a great Noise Reduction plugin. Costs a lot though.
-EQ. If you can isolate the frequency of the hum (Sound Forge Spectrum analysis is great at this), you can EQ it out – but will lose some adjacent frequencies.
-Noise Gate. you can use the Express Dynamics plugin to set the noise gate so it drops the volume of the sound completely between sounds so the overall presence of the hum is reduced.
all in all, the best solution is either DC OFFSET or Noise Reduction. and you will need Sound Forge for either one… akaik
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You may want to try the either of the audio EQ plug-ins that come with Vegas.
Right click on the audio track and select Add non-real-time Event FX. The plug-in controls will come up and you can try different settings and save a new wave file with the changes. Add the new audio to the timeline and listen.
Hope this helps
Steve -
If you don’t have Sound Forge you could download the free audio editor Audicity and use the noise reduction feature in it. Works pretty well but use judiciously as can cause some wierd sounds if overused.
Terry Esslinger
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Thanks to all for your help. I downloaded Audacity per your suggestion and it worked like a charm!!!
Dave P.
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Sorry, Yes Audacity.
Terry Esslinger
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