question on audio editting

**h.chua** · 04-23-2007, 11:05 PM

question: here's the scenario. i have cds in which the speaker is using a lapel mic, so while listening to the recording, i can hear "mmmmm" sounds on the background like something's wrong with the mic.. like a "hmmmm" in the background. how can i clean this and remove the "hmmm" sound so that the audio will be crisp and clear? newbie here so step by step specific instructions would be greatly appreciated. thank you.

**Sponsor** · 04-23-2007 11:05 PM

**rezh_timothy** · 04-24-2007, 02:55 AM

Originally Posted by h.chua

question: here's the scenario. i have cds in which the speaker is using a lapel mic, so while listening to the recording, i can hear "mmmmm" sounds on the background like something's wrong with the mic.. like a "hmmmm" in the background. how can i clean this and remove the "hmmm" sound so that the audio will be crisp and clear? newbie here so step by step specific instructions would be greatly appreciated. thank you.

Hello! I'm not an audio editor. I'm a video editor but just try this. It might help you. Open Final Cut Pro - Import audio to FCP, of course! - latag mo sa timeline. Select effect sa BROWSER - then go to audio filters - choose LOW SHELF then drag the filter to your audio track - double click the track - In VIEWER window, adjust the frequency to 80. Hope that helps you. If not, better ask someone else, I only got minimal knowledge about audio editing! Good luck!

**rezh_timothy** · 04-24-2007, 04:41 AM

In addition to your inquiry (Sorry, I'm currently not facing a Mac eh. I'm having a hard time picturing out FCP's default window), you can also adjust GAIN from the same filter if the abovementioned still doesn't satisfy you. Start with -9. pag medyo malakas pa din yung hum, gawin mong -12 o kaya lower pa, -15. pwede mo ding isagad yun up to -20.

**EnOcH5** · 04-24-2007, 05:59 PM

adobe audtion, sound forge, cakewalk, etc... all have filters that allow you to take out the humming sound of an audio clip.

**h.chua** · 04-24-2007, 07:45 PM

Originally Posted by rezh_timothy

In addition to your inquiry (Sorry, I'm currently not facing a Mac eh. I'm having a hard time picturing out FCP's default window), you can also adjust GAIN from the same filter if the abovementioned still doesn't satisfy you. Start with -9. pag medyo malakas pa din yung hum, gawin mong -12 o kaya lower pa, -15. pwede mo ding isagad yun up to -20.

tried it, ayaw po eh. even tried -100, the hmmmm or bzzzzz sound is still there, even louder, i think.

**h.chua** · 04-24-2007, 07:46 PM

Originally Posted by EnOcH5

adobe audtion, sound forge, cakewalk, etc... all have filters that allow you to take out the humming sound of an audio clip.

anything freeware? hehe can audacity do this?

**vicicasas** · 04-24-2007, 08:21 PM

You're in luck. Audacity does have a Noise Reduction function (it's under Effects, i think).

It operates similarly to a Pro Tools plugin we used to use in the studio a long time ago called DiNR (Digidesign Intelligent Noise Reduction).

You basically have to find a gap in the dialogue where you hear nothing but the sound of the offending noise ... select that bit of noise and use it as the "signature" for the software to analyze. The longer a "signature" you can provide, the better the results will be. Try getting something from the very beginning or very end of the sound file.

Audacity will then try to make that noise less obvious (though it may not be able to eliminate it completely).

Try it out, the process should be pretty self explanatory once you load it up. And hey, it's free =)

**rezh_timothy** · 04-25-2007, 03:47 AM

Originally Posted by h.chua

tried it, ayaw po eh. even tried -100, the hmmmm or bzzzzz sound is still there, even louder, i think.

I'm sorry about that. I can't hear the 'hmmmmmmmmmm' problem you are worried of. I just assumed that it's like the term 'hum' audio editors used in our office.

**h.chua** · 04-26-2007, 02:55 AM

Originally Posted by vicicasas

You're in luck. Audacity does have a Noise Reduction function (it's under Effects, i think).

It operates similarly to a Pro Tools plugin we used to use in the studio a long time ago called DiNR (Digidesign Intelligent Noise Reduction).

You basically have to find a gap in the dialogue where you hear nothing but the sound of the offending noise ... select that bit of noise and use it as the "signature" for the software to analyze. The longer a "signature" you can provide, the better the results will be. Try getting something from the very beginning or very end of the sound file.

Audacity will then try to make that noise less obvious (though it may not be able to eliminate it completely).

Try it out, the process should be pretty self explanatory once you load it up. And hey, it's free =)

this got it to work. thanks so much!