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Author Topic: Attenuating clapping in live recordings - the easy way  (Read 21582 times)

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Offline ilduclo

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Re: Attenuating clapping in live recordings - the easy way
« Reply #45 on: October 31, 2015, 09:28:50 AM »
Revisiting... The trouble with envelope attenuation is that, while you know you can knock down the peak claps with it by what ever percentage, you also lower the well behaved clappers close by and the room in general.  When you go to far, it sounds like the room has been moved well away from the action and you don't get a natural sounding reaction to the show.   

yes, the operative words are "go too far",  to me moderate amounts are 30 to 40%. I know of no other way to do this with a natural sound. I am hard limiting the "in the song" clapping I was talking about earlier by reduction of approx 5 db. Seems to be working. and I changed the default timing per the recco to the lowest 40 ms setting......sounding great

Offline dyneq

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Re: Attenuating clapping in live recordings - the easy way
« Reply #46 on: February 14, 2016, 05:50:20 PM »
Bumping to share my experience. Last night, I recorded video for a friends' band performance in a small room at a brewery (Sonic Studios omnis > Nikon D3300 > Quicktime mov file). I had a good spot for both video and sound, but at times people would raise their hands up to my head's level and clap right next to the mics (I was seated on a tall stool most of the time).

I tried the OP's method in Amadeus Pro and I'm happy with the result. Amadeus Pro has its own vinyl audio repair tool but it works much like the rest in that you zoom in on the loud 'click' and select only that area to repair. In some cases, it was more prominent in one channel, so I experimented with only repairing one channel but I ended up preferring to repair both channels because it sounds more natural.

Amadeus Pro has a nice feature where it can find the maximum sample for the selected area. So my workflow goes like this:

1. Select all
2. Analyze menu > Find Maximum (or Command + Option + P)
3. Preview the peak to make sure it's a clap and not music (usually obvious from the waveform)
4. Select only the peak (both channels sounds more natural)
5. Press 'r' to repair.
6. Rinse, lather, repeat until I hit music
7. Normalize

If you have a ton of claps, then this would be too tedious of a process. I only found about 20 claps that were louder than the loudest music sound, so it went pretty quickly and sounds natural to my ears.


Offline ilduclo

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Re: Attenuating clapping in live recordings - the easy way
« Reply #47 on: February 18, 2016, 06:24:30 PM »
I've found applying limiting or compression to only the applause sections -- rather than the file in its entirety -- works quite well.  There's often a quiet(er) musical moment at the end of songs, but before applause...and after applause, but before the start of songs.  This allows me to compress the applause down to the level of the music at the time the applause starts, which is often -- but not always -- lower than much of the rest of the music.  $0.02

For example, you might have a file with applause peaking at -3 dB, music peaking at -9 dB, but the music immediately before and after a section of applause only peaks at -15 dB.  In this case, apply compression / limiting to the applause section only, knocking it down to -15 dB.  Whereas if you apply compression / limiting to the entire file, the lowest you could knock down the applause would be -9 dB.

thanks, it works!

Offline fandelive

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Re: Attenuating clapping in live recordings - the easy way
« Reply #48 on: June 12, 2016, 06:08:03 AM »
Here's another method I recently came up with, when declicker doesn't work : Removing Pops and Clicks In Adobe Audition CS6 (Voice Over).

Not exactly the easy way but this will work in some harder to resolve cases.
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Offline nassau73

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Re: Attenuating clapping in live recordings - the easy way
« Reply #49 on: June 20, 2016, 08:40:02 PM »
When it comes to dealing with loud applause during a quiet concert, I've tried a number of these suggestions and have found there is really no "easy way" to get rid of them.

So I've been using an extremely labor intensive method in Audition - Auto Heal.

This requires that you select and process each individual hand clap. But I've found it to be extremely effective and virtually unobtrusive on shows I want to preserve for my own future listening pleasure.

As an example, I recently attended the Anders Osborne/Luther Dickinson acoustic show at the MACC here on Maui. There was a guy sitting two seats away who insisted on clapping louder and longer than anybody else. He was so loud that he hurt my ears even through my ear plugs!

Attached is a capture of what the applause looks like in spectral view. Following is a capture of how narrow the auto heal selection can be. For anyone whose DAW does not contain auto heal, what it does is replace the selection with a bit of audio from each side of the selection. I've found that even if the "clap" is occurring during the performer's comments after the song is over, there is still no discernible effect on the comment.

Once again, this is very labor intensive and in the case of that gentleman sitting two seats away - I counted between 40 and 80 claps after each song! However, once the claps are eliminated, it's possible to boost or normalize the remaining audio and not be blown away by applause when listening in headphones.


Offline voltronic

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Re: Attenuating clapping in live recordings - the easy way
« Reply #50 on: June 20, 2016, 09:45:58 PM »
This sounds like it was a real pain to do.  Would you mind posting an excerpt of your original and letting us take a crack at it?
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Offline hoserama

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Re: Attenuating clapping in live recordings - the easy way
« Reply #51 on: June 20, 2016, 10:28:46 PM »
If you're going to put in the time and labor for the auto-heal, you could just select the frequency of the clap itself. Claps are usually 800hz-3k range, so you could just select those freqs and time and hit the auto-heal. Make sure you bind the auto-heal feature to an easy key command (I use Shift-1).

Although for claps, I generally just use a tweaked declicker from Ozone RX. Auto-Heal and RX's spectral repair work well for static in wireless recordings.
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Offline nassau73

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Re: Attenuating clapping in live recordings - the easy way
« Reply #52 on: June 21, 2016, 01:07:13 PM »
This sounds like it was a real pain to do.  Would you mind posting an excerpt of your original and letting us take a crack at it?

Here's a short snip from the end of set 1with the full applause:

http://www.filedropper.com/taperssection-sample

Here's that snip after editing:
http://www.filedropper.com/taperssection-edited

Offline voltronic

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Re: Attenuating clapping in live recordings - the easy way
« Reply #53 on: June 21, 2016, 02:50:54 PM »
This sounds like it was a real pain to do.  Would you mind posting an excerpt of your original and letting us take a crack at it?

Here's a short snip from the end of set 1with the full applause:

http://www.filedropper.com/taperssection-sample

Here's that snip after editing:
http://www.filedropper.com/taperssection-edited

Thanks.  Did you try this first in Audacity?  I actually found it pretty easy to get a decent result using the method described in my OP.  I did have to raise the Max Spike Width to 40, and it needed two passes to do a decent reduction.  But I was able to knock the claps down to where I could amplify by +7 dB (leaving 0.2 dB headroom).  A third pass didn't help further.  I could have knocked the claps down even more with limiting, but I wanted to show just what Click Removal could do by itself.
http://www.filedropper.com/taperssection-sampleaudacitydeclick2pass
http://www.filedropper.com/taperssection-sampleaudacitydeclick2pass7db

Then I tried your original file in iZotope RX4, and no surprise - it gave me superior results.  I used the Vinyl Record preset, again as described in the OP with no changes to default settings.  This allowed me to get a bit more reduction, so I could amplify +9.1 dB (again, 0.2 dB headroom).
http://www.filedropper.com/taperssection-samplerxdeclick
http://www.filedropper.com/taperssection-samplerxdeclick91db

All told, I spent about 5 minutes working in each program.  Now, not everyone is going to want to shell out for RX, but I suggest you try the tools in Audacity before you spend so much time and effort doing it the other way again.
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Offline nassau73

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Re: Attenuating clapping in live recordings - the easy way
« Reply #54 on: June 21, 2016, 05:15:38 PM »
This sounds like it was a real pain to do.  Would you mind posting an excerpt of your original and letting us take a crack at it?

Here's a short snip from the end of set 1with the full applause:

http://www.filedropper.com/taperssection-sample

Here's that snip after editing:
http://www.filedropper.com/taperssection-edited

Thanks.  Did you try this first in Audacity?  I actually found it pretty easy to get a decent result using the method described in my OP.  I did have to raise the Max Spike Width to 40, and it needed two passes to do a decent reduction.  But I was able to knock the claps down to where I could amplify by +7 dB (leaving 0.2 dB headroom).  A third pass didn't help further.  I could have knocked the claps down even more with limiting, but I wanted to show just what Click Removal could do by itself.
http://www.filedropper.com/taperssection-sampleaudacitydeclick2pass
http://www.filedropper.com/taperssection-sampleaudacitydeclick2pass7db

Then I tried your original file in iZotope RX4, and no surprise - it gave me superior results.  I used the Vinyl Record preset, again as described in the OP with no changes to default settings.  This allowed me to get a bit more reduction, so I could amplify +9.1 dB (again, 0.2 dB headroom).
http://www.filedropper.com/taperssection-samplerxdeclick
http://www.filedropper.com/taperssection-samplerxdeclick91db

All told, I spent about 5 minutes working in each program.  Now, not everyone is going to want to shell out for RX, but I suggest you try the tools in Audacity before you spend so much time and effort doing it the other way again.

Thanks for the information - very helpful.

No, I did not try the click remover in Audacity but I did use it originally in Audition 3.0. I got similar results as the sample done in Audacity. However, the presence "main" loud clap is was/is still too prevalent for me when listening in headphones. I never tried knocking the claps down even further using limiting primarily because of lack of experience, so I'll try that next time.

I'll be interested to hear the results when the applause starts as a song is fading out rather than primarily on artist comments as in the sample I originally posted.

BTW, I usually use the Audition click remover with satisfactory results. However, none of the more automated processes I tried this time with my limited skills was satisfactory so I decided to bite the bullet and do the individual cleanup route.

I do have to say that I am impressed with the results you achieved using iZotope. After hearing your sample, I remembered that I have the basic iZotope music and speech cleaner that came with my Pinnacle Studio video editing package. I gave that a try after hearing your samples. It didn't seem to do as thorough a job as your version or the individual auto heal process I did - however - it did seem to get things to a manageable level with the slider set all the way to 10 (now if it only went to 11  ;D )

Thanks again for your insights.


Online obaaron

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Re: Attenuating clapping in live recordings - the easy way
« Reply #55 on: July 17, 2016, 11:51:41 PM »
so my wsp show from last night has clapping, whistling throughout what method do you guys recommend? Using audacity....thx
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Offline voltronic

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Re: Attenuating clapping in live recordings - the easy way
« Reply #56 on: July 18, 2016, 07:26:48 AM »
so my wsp show from last night has clapping, whistling throughout what method do you guys recommend? Using audacity....thx

Nonstop or periodically?  Maybe if you post part of a track we can give it a shot and see what works.
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Offline ipietri

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Re: Attenuating clapping in live recordings - the easy way
« Reply #57 on: September 08, 2016, 05:27:23 AM »
I use "handles" in Wavelab audio montage - see images before and after

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Re: Attenuating clapping in live recordings - the easy way
« Reply #58 on: March 25, 2017, 12:24:36 PM »
How can you attenuate/filter only frequencies that are above a certain db level?  (for quiet performances with clapping 10 db's louder than the music.). This should be straightforward... not sure how to execute this with Logic or Audacity.

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Re: Attenuating clapping in live recordings - the easy way
« Reply #59 on: March 25, 2017, 01:27:55 PM »
Limiter
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