Reducing booming

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kozikowski
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Re: Reducing booming

Post by kozikowski » Mon May 10, 2021 9:44 am

raw voice.wav
Perfect.

It's too "live," room noisy, and echoey. Can you tell your computer is on just by listening? I can almost tell how big your room is by analyzing the echoes. You can force the computer noise lower with effects, but each of those effects can damage the voice. You will never get rid of the echos.

Are you using a deadening solution such as the Kitchen Table Studio?

viewtopic.php?p=369938#p369938

That's the affordable, do-it-yourself solution.

HarborFreightBlanket.JPG
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It's based on a commercial product.

https://voiceoveressentials.com/product ... booth-plus

There are others.

-- But --

Your microphone is 10 inches long not counting the connector on the end. The XLR and cable will add about another 4 inches giving a total microphone size of 14 inches. Add a Hawaiian Shaka spacing to your face, say 7 inches....

Image

...and you have a grand total of 21 inches which won't fit in either of the tiny studio solutions.

I can design a double-deep studio, that's the nice thing about cheap plastic pipes, but 40 inches may not fit on your table.

Turn the volume up on the first two seconds of your sample. That is your computer noise, right? The tones in the noise suggest a computer fan and not a refrigerator or room fan. You can't separate the 2i2 from the computer more than about five feet or so (one USB cable), but you can separate the microphone from the 2i2 as far as you want. Commercial XLR cables can come in 20 foot lengths and you can plug them into each other. So that's 40 feet. If you're still in the same room as your microphone, you can make a little studio for the computer. More moving blankets. You need to pay attention because you can't block the air flow. The computer needs to breathe.

That robust bathroom sound just kills home performers right after background noise.

Koz

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Re: Reducing booming

Post by kozikowski » Mon May 10, 2021 9:59 am

My favorite bad example is YouTube "Colby Explains." He has very nice color key backgrounds and good theatrical lighting.

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He sounds exactly like a kid recording in a kitchen.

https://www.youtube.com/watch?v=uYG9jeBXpVY

I know there is YouTube Wisdom that says you don't have to worry about that, but legacy theatrical production doesn't agree.

Koz

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Re: Reducing booming

Post by LivingInternet » Mon May 10, 2021 3:09 pm

Are you using a deadening solution such as the Kitchen Table Studio?
When will we ever use all those moving blankets again, I wondered? Now we have an answer. I've put six of them everywhere I can around the room out of shot. And I put a large cardboard box over top of the computer, as far away as I can.

Here's the result, raw voice with no processing. Better starting point?
raw voice2.wav
(861.29 KiB) Downloaded 11 times

kozikowski
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Re: Reducing booming

Post by kozikowski » Mon May 10, 2021 3:44 pm

Shotgun microphones are good at rejecting sounds from the rear and sides, but they record you perfectly and everything behind you.

If you have a polished, rich-looking wood background, then what you really need is a choma-key blue, cyan, or lime-green soundproof background, good lighting, and key in the wood panels you shot last week.

That's very Hollywood. It looks like you're standing in front of a rich, polished wood wall.

If you can't find fuzzy, thick chromakey panels (I know you can buy the paint), make the green background on a sheet or some other thin material and mount it an inch or so in front of a moving blanket. So it's wall, moving blanket, thin chroma-key sheet, space, and the back of your head. The moving blanket works best if it, too is spaced an inch or two from the wall. That's the square-law math thing if you're counting.

https://www.youtube.com/watch?v=AL5ZKHp_H3I

Chroma-Key does come with some rules. You can't wear anything the same color as the wall, and you can't easily do motion shots. You can move a little in the frame, but you will always look like you're performing in front of a fixed background.

You can shoot the show multiple times at different spacing and composition. That's very common for home performers to make it look like an expensive, multi-camera show. Again, very Hollywood.

Edit your brains out later.

One caution about multi-camera. Look into the camera, or look away from the camera, do not mix them.

See: Colby is always addressing you/the camera and the people in the Royal Society videos are always addressing the audience off camera.

Koz

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Re: Reducing booming

Post by kozikowski » Mon May 10, 2021 4:47 pm

raw voice2.wav
That is better. Closer and more intimate and less like speaking to me down a long tunnel.

Noise is better, too. Less machine shop.

I mastered the last clip and applied very gentle Noise Reduction of the Beast (6, 6, 6) and it passes audiobook standards.

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raw voice2MasteredAndNR.wav
(861.29 KiB) Downloaded 3 times

You could go with that. There's a fuzzy rule that if you can do that, you should be able to submit anywhere else. Their standards match broadcast.

Koz

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Re: Reducing booming

Post by kozikowski » Mon May 10, 2021 5:02 pm

Note there is a rumble and boom filter built into Audiobook Mastering. That's why you sound human now. If you're in Audacity 3.0.2, Mastering comes as a one-step Macro and not as a collection of individual tools. Post back if you want to go that route.

Koz

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Re: Reducing booming

Post by LivingInternet » Mon May 10, 2021 6:50 pm

If you're in Audacity 3.0.2, Mastering comes as a one-step Macro and not as a collection of individual tools. Post back if you want to go that route.
Hmmm, yes, I'd be interested in that, it is always best to be on the latest. However, in this case, I'm worried about losing investment I've put into V2.2.2. For example, it is my understanding that Equalization with my current presets would no longer work, and the current settings for my other plugins would not copy over?

Can they be run at the same time?

kozikowski
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Re: Reducing booming

Post by kozikowski » Mon May 10, 2021 7:55 pm

The macro is a shortcut to automatically running the three tools in Audiobook Mastering. It's only unconditionally stable in Audacity 3.0.2, but you can run the three tools manually.

I'll need to remember the version variations. Loudness Normalization wasn't always called that, and Filter Curve used to have another name.

This is also the magic place you have to remember which parts of the investment were disaster rescue and which parts were theatrical treatments. I don't notice any Essing or other tonal distortions and you don't have serious echoes any more. So all those emergency tools fall away.

You may be oozing back to the original goal. Do you remember what that was?

I need to do a little historical research.

Koz

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Re: Reducing booming

Post by kozikowski » Tue May 11, 2021 2:22 am

I got pieces. 2.2.2 is a bit old. I have a question posted about the missing tools. This must have been before I designed the ACX Mastering Suite.

Setting the RMS of a voice track is a trick. Almost all of the effects tools work on waveform tips and peaks, not show loudness. There is no convenient method of converting between measurements.

Koz

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Re: Reducing booming

Post by kozikowski » Tue May 11, 2021 1:52 pm

I need a step I can't generate here.

Open Audacity on any sound. Effect > Limiter. Do a screen capture and post it here.

Windows has the Snipping Tool that allows you to capture the whole screen or a selected portion. I only need the Limiter control panel like this.

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I'm pretty sure yours won't look like that.

Koz

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