Hi,

Wedding was indoors then moved to outdoors at the last moment, forgot to setup Zoon H4N recorder and my primary audio turned out terrible because I had a bag on the camera to prevent rain.

Any suggestions how to remove the plastic bag wrinkle noise (attached a .wav file) from the audio?

Use adobe premiere, have access to other adobe suite programs for audio.

Thanks,

That noise seems to be fairly broadband, and louder than the desired audio. In addition to the "crackle" sound which has a lot of HF component, there is the LF sound of wind buffeting the bag. Neither one has a specific frequency signature that would be easy to attack.

I suppose if you had an audio sample of just the noise, with no desired audio, you could try an adaptive filter such as the "Noise Reduction" filter in Audition. But those filters are really designed to remove background noise, whereas your noise is very much foreground. I can't imagine anything that would reduce it to the point of being unobtrusive.

Thank you for your reply.

You could try a spectral repair application. iZOtope Rx or SCS SpectraLayers Pro for example. It would be tedious and time consuming for sure.
OTOH, a vinyl click/crackle remover utility may help to some degree.

Rick, I tried a few different click/pop tools, but didn't mention it earlier since they weren't really successful. They did remove some, but not nearly all, of the plastic "crackle" noise.

There's a bigger problem, too. Apparently some sort of AGC was engaged, and as the buffeting wind creates a lot of LF energy, I hear the gain of the music pumping up and down. (It's not immediately obvious, since this audio sample is so short, but if you listen a few times you'll undoubtedly hear it.) So even if we could magically remove all of the crackle, and filter out all of the LF wind buffeting, we'd be left with "desired audio" that is rapidly pumping up and down in level.

Maybe in 50 years we will be looking at files like this as something trivial (just as we now consider motor noise, harmonic buzz, wow & flutter, as rather trivial today). But I will get down and kiss the feet of anyone who can turn this into a useable file today ... without hours and hours of manual adjustments.

Can't think of any automatic fixer.

A couple possibilities - in most cases rather time consuming:
If any of the music was prerecorded, overdub those portions.
Would the participants be available to voice over their portions (blame it on excessive wind)?

For the dialog portion, to counter the AGC pumping and at least some wind noise use the level rubber bands on the audio time line to manually adjust dialog and "noise gate" the quiet portions.
The low-cut/hi pass filter can help with some of the wind noise.
Selective application of noise reduiction only to problematic spots may help.

Damn - this is awful!

I sort of savaged it in Izotope and got it to sound more like crappy sound with noise rather than noise with crappy sound, albeit crappy sound with noise occasionally sounding like it was under water.

Which just made the pumping more noticeable

+1 on the audio equivalent of the reshoot filter being the only thing that would really save it.for a paying customer

Do you know a keyboard person who could play the music while listening through headphones?? Lord knows what would become of any dialog though.

FWIW

https://dl.dropboxusercontent.com/u/17745879/plastic%20in%20audio%20Izotoped.wav

For the dialog portion, to counter the AGC pumping and at least some wind noise use the level rubber bands on the audio time line to manually adjust dialog
But first you've got to get rid of all the broadband noise.

The low-cut/hi pass filter can help with some of the wind noise.
Believe me, this was the first thing I tried. The result just sounds like wind and plastic through a telephone line. It does nothing to improve the S/N. And eventually you reach the point where the desired audio is unrecognizable.

Would the participants be available to voice over their portions (blame it on excessive wind)?
ADR wedding vows. What's the world coming to?

You might get Woody Allen to dub it, ala What's Up Tiger Lily?

The only other solution is to use title cards.

I sort of savaged it in Izotope and got it to sound more like crappy sound with noise rather than noise with crappy sound, albeit crappy sound with noise occasionally sounding like it was under water.
That's better than I would have thought possible. Sounds like an Edison cylinder recording of a wedding, rather than a wedding with a volcanic eruption. My hat's off to you. No foot kissing, though, it's still not really useable. ;-)

You might get Woody Allen to dub it, ala What's Up Tiger Lily?

The only other solution is to use title cards.


Title cards, nice touch :)

Thanks for your help guys, I'm looping the background music around the vows, I did take the bag off minutes into the ceremony so it's not a complete loss.

Subtitles for the ceremony? A great idea, especially if there are hearing impared people in either family.

I was joking about title cards, and hadn't thought of subtitles. But in seriousness, closed captioning could be beneficial. I wonder how many wedding videos are produced with this feature.

@Gregg

Damn - I'll have to put my socks back on!!!!

I like the Edison cylinder analogy although the cylinder in this case seems to be a bit elliptical instead of round - that's what causes the pumping. Maybe it sat in the sun too long and the wax just sagged.

Subtitles for the vows - that would be neat. Convert the video to B&W, change it to 10 fps, add noise., print to film, scratch it up, walk on it, re-digitize.

Oh well - sorry I couldn't do better.

Jim,

Your file really sounded surprisingly good. I wouldn't have thought that possible without a lot of manual tweaking along the way. No it is not crystal clear, it lacks "life" after all the NR, but at least the noise is beaten pretty well into submission.

I wonder how well you could clean up the dialog with the same process. If you got the dialog clean, and if the wedding music was pre-recorded, the OP could get the original music track, sync it up, and drop it in in place of the windbag track.

Nice job, Jim!

PS: I sort of savaged it in Izotope
Did you perhaps mean "salvaged"?

Actually I did mean "Savaged"

I was running spectral repair and NR at strengths I wouldn't even dream of trying for any kind of quality result and just sort of hacking away with a digital machete so to speak.

It might be fun to see what would happen to the dialog if the OP could post a clip.

And thanks for the kind words - I really really like Izotope. I've had great luck with it - even once removed a horrendous noise (caused by a cellist hitting his chair leg with the instrument during a quartet performance) well enough that nobody could notice where it had been.

I have to admit that I'm not very scientific in my approach, I just hear something bad and go after it with whatever seems to make it sound better until I succeed or give up. I've found after using it for a couple of hundred hours that you can actually almost see the music by looking at the spectral display. Of course I know most of the pieces pretty well and usually have a full score handy while working.

Hacking away with the digital machete - I like that! Although RX can be a very fine-edged scalpel, but using it that way takes...a long time. I had a clip once from some conference - don't know what the intern had done with that camera - but the audio was just buried waaay down in the sputtering noise floor. Couldn't save that no matter what I did. I even took it as a learning experience and spent about a dozen hours I never billed - just to see what could be done (I was new with RX then). Sometimes there's just no way.

RX is my absolute favorite. I did a video/recording of the Tchaikovsky Piano Concerto #1 - at the entrance to the 2nd movement there is a solo pizzicato passage in the violins. One guy Pizz'ed a little late so to speak. Sounded awful. I was able to remove the errant Pizz.with RX

In the introduction, one horn was a tad late - I couldn't fix the late attack perfectly but I reduced it a lot so it wasn't quite as obvious.

Great piece of software.

I have a commercial recording of Finlandia where the tuba put a depth charge-like sforzando in the wrong place. I wonder nowadays if there wasn't the budget to do another take whether that could be fixed in post?
I often wondered whether the tuba player ended up fixed to a post :-)

I'm a tuba player myself as a matter of fact.

If you could grab 5 - 10 seconds each side of the offending Sforzando I'd be willing to try to tone it down. Might be do-able.