Removing the sound of flem in vocal recording

I doubt its possible to remove the sound of flem from a vocal recording, but has anyone attempted it?

One approach might be to use a spectrum analyzer to try to determine which frequencies are in the flem and try to filter them out. Or another approach might be to use a formant analyzer/generator/filter to "purify" the vowels where the flem is occuring. But I don't think Logic has these tools.

Any suggestions? Plugins?

Thanks.

Powerbook G4

Posted on May 30, 2006 8:00 AM

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24 replies

May 30, 2006 8:45 AM in response to SteveDjokes

Steve,

"Flem" is a term used for the mucus one gets when they have post nasal drip from their sinus cavity drain down into their throat. (Now isn't that a nice image... :-))

As far as eliminating it from a vocal recording, I seriously doubt it's possible. Mainly because it's probably occurring at the same time a note, or pitch is occurring. You can't eliminate one without eliminating the other.

That's the kind of stuff that needs to be addressed while recording, not afterwards. However, depending on the vibe of the song, it can severely add in the believability factor, as long as it isn't causing the attention to drift from the sung performance.

Is it just a little bit, and you've become obsessed with it, now that you hear it, or is it truly distracting?

Is it from a section of the song that is repeated elsewhere, and can be flown in place of it?

Wish I had the magic trick, but there really isn't one that I know of....

May 30, 2006 8:48 AM in response to Robert Caldwell2

Since when does phlegm make a sound? I have tried to record mine but it just sits there. 🙂

If you're referring the fact that the vocalist has not cleared their throat when singing, that's another story. If it's embedded in a vocal inflection, then chances are anything you do to remove that raspiness will probably remove some vocal characteristics. Probably best for next time to tell the vocalist to gargle with salt water and/or take some Benylin 20 minutes before recording.

jord

May 30, 2006 10:55 AM in response to jord

Yeah. Phelgm--I knew flem wasn't the correct spelling.

The passage is on a recording that we have to keep: the session is long over. The emotional force, even with the phlegm, is much stronger than other takes with a clean sound, so we are leaving it in, but I was hoping there might be a way to process it out without distorting the overall sound too much—say for just the length of each phoneme, while allowing surrounding consonant sounds to stay the same.

It is too bad the phlegm appeared up in the middle of it.

Thanks.

May 30, 2006 2:52 PM in response to Robert Caldwell2

Re tricks to de-phlegmogorize the track...

Use the De-Phlegmorizer plug-in. There's a continually variable control labeled: "most recently ingested food group, allergy, or illness". You can adjust (and even automate) between settings of:

Full-On Flu
Dairy
Hay Fever
Chocolate Bar
Sniffles (awwww....)
Chinese Take-out
Mexican

There's also a control for switching between De-Phlegming and De-Wheezing.

It's never worked for me tho...

On the more serious tip you could get creative by grabbing sustained, non-phlegmatic vowel sounds from one area of the vocal and replacing problematic ones, but it's going to be hit-or-miss at best and really tweezy to do.

The only other thing you can do is creatively automate (dipping the volume) around certain problematic areas, but not knowing your track, this may or may not be possible.

Jul 31, 2006 2:52 AM in response to Robert Caldwell2

Really simple to get rid of the flem sound. Simply play your sound in a loop. play with a graphic eq untill you find where the annoying 'flemmy' bits are.

then simply compress those particular frequencies (try to be tight), and give it a hard compression - so to start with you should hear all flem...

and then bring the level of the flem down so you don't feel it so much. You might want to put a slower attack on the compressor to make it act like a bit of a deesser - deflemmer.... I rekon my flems at about 800, 400, and 200hz or their about

Other than that all I can suggest is otravin - but otravin can hurt - it does get rid of flem very effectivley.

Actually a formant editor/viewer should be able to get it too... When I was at music school I used this cool program on a mac which allowed you to open up a file in the formant view - then you could simply draw circles around particular formants, and choose to effect only that formant - delete it, enhance it, lower or increase volume - or move it around the pitch spectrum - it was cool you could just draw circles around the individual formants....

I can't remember the name of that audio editor though - do you know the one I mean?

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Removing the sound of flem in vocal recording

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