Reducing booming

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Trebor
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Re: Reducing booming

Post by Trebor » Thu May 13, 2021 2:42 am

LivingInternet wrote:
Thu May 13, 2021 1:18 am
... Is the clicking still there? I'm not sure I can hear it myself: download/file.php?id=31669
No clicks on that ("raw voice2").
It was Q2 that had the frequent metallic click ...

metallic click on Q2.gif
IMO not in-mouth noise on Q2
metallic click on Q2.gif (394.87 KiB) Viewed 211 times

LivingInternet
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Re: Reducing booming

Post by LivingInternet » Thu May 13, 2021 10:36 pm

I'm wondering if those clicks were from my computer, now distanced and under a cardboard box?

Alternatively, perhaps they are introduced by the change pitch? I do prefer some reduced pitch, and apparently my students do too. I'm not proud. Whatever works best.

Here is a longer test, raw no processing.
RawVoiceClickTest.wav
(1.64 MiB) Downloaded 6 times
Here is the same test, with the only processing being a change of pitch of -4%
RawVoiceClickTestPitch-4.wav
(1.63 MiB) Downloaded 7 times

Still clicks, or clicks all gone?

Trebor
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Re: Reducing booming

Post by Trebor » Fri May 14, 2021 5:07 am

LivingInternet wrote:
Thu May 13, 2021 10:36 pm
I'm wondering if those clicks were from my computer, now distanced and under a cardboard box?
They usually correspond when your voice is loud, so not extraneous (e.g. computer) noise from the in the room.
LivingInternet wrote:
Thu May 13, 2021 10:36 pm
Alternatively, perhaps they are introduced by the change pitch?
They are on the raw version, so not caused by pitch shifting, (but will become more obvious by shifting down)

Sounds like clicking within the microphone.

Can be fixed with Paul-L's declicker plugin ...
''RawVoiceClickTest'' ''Now'' before-after Paul-L DeClicker.flac
"N" of "now" has a high-pitched click
(84.77 KiB) Downloaded 8 times
Paul-L declicker settings used.png
Paul-L declicker settings used.png (24.24 KiB) Viewed 192 times

LivingInternet
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Re: Reducing booming

Post by LivingInternet » Mon May 17, 2021 3:52 pm

I'm putting together my chains.

The main target for this work is Udemy, where students are used to louder audio. So I have had comments mine was too low, which has review rating and other negative implications, so would like to make mine as loud as (acceptably) possible.

Would it be ok to RMS normalize to -18 dB and then soft limit to -3.0 dB?

kozikowski
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Re: Reducing booming

Post by kozikowski » Mon May 17, 2021 4:55 pm

That may be a job for Chris's Compressor. Chris wrote this processor so he could listen to opera in the noisy car without constantly turning the volume up and down.

https://theaudacitytopodcast.com/chriss ... -audacity/

Notes:

-- I change the first value, Compress ratio from the default 0.5 to 0.77. That makes the show louder and denser.

Screen Shot 2021-05-17 at 9.44.56 AM.png
Screen Shot 2021-05-17 at 9.44.56 AM.png (54.81 KiB) Viewed 167 times

-- It shows up under the effects menu as Compress dynamics.

-- It doesn't like running off the end of the file, so add "something" at both ends of the work, run Chris and then cut it off later. My show was part of other material, so I never noticed the end-file thing.

I use this on a talk show where the hosts have very different voices. It mops up the differences and makes the whole show louder, all without me guessing at compression "knee" points and volume slopes of other compressors.

Give it a shot.

Chris won't be improving it any more. He reached "end of life" a while ago.


Koz

Trebor
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Re: Reducing booming

Post by Trebor » Mon May 17, 2021 5:57 pm

IIRC Chris' is only a one-band compressor.
Gmulti has 3, (#3 can be used to de-ess)

Gmulti.gif
Gmulti.gif (516.35 KiB) Viewed 165 times
Gmulti allegedly can be used on Windows, Mac & Linux,
but I can only testify the 32-bit version works in Audcaity on Windows.

LivingInternet
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Operating System: Windows 10

Re: Reducing booming

Post by LivingInternet » Tue May 18, 2021 8:39 pm

I'm leery of compression mainly because I've read about it taking out some of the natural feel, and the relative emphasis of syllables, words, and phrases is so important in the kind of otherwise dry material I'm covering.

Would there be a downside to just RMS normalizing to -18 dB, and then soft limiting to -3.0 dB? In the tests I've done, to my ear, I can't tell any damage from the soft limiting. But then again, we are talking about a barely adequate ear.

Here is an example to see what the result would be. Same audio as last sample, with the following:

- Declicked, settings as per Trebor post
- Change pitch -4%
- Equalization with low rolloff for speech
- RMS normalize -18 dB
- Soft limit -3 dB
Processed1.wav
(673.33 KiB) Downloaded 6 times

Acceptable, or too loud?

kozikowski
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Re: Reducing booming

Post by kozikowski » Tue May 18, 2021 10:30 pm

Acceptable, or too loud?
Acceptable is up to you and the customers. You don't have to meet anybody else's standards, so it's up to you.

You could also soft-limit louder, say -2dB rather than -3dB.

Soft-Limiter is not accidental. There are other harsher and stiffer limiters. In extreme or with the wrong one, you could start to sound like an air traffic controller. Soft Limit is like wrapping the limiting action with many layers of flannel. It's working, but you can't tell by listening what it's doing.

One of the goals of the Mastering Suite was that you still sound exactly like you, except you pass audiobook standards.

Koz

Trebor
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Re: Reducing booming

Post by Trebor » Tue May 18, 2021 10:52 pm

LivingInternet wrote:
Tue May 18, 2021 8:39 pm
Processed1.wav

Acceptable, or too loud?
That's -16.9db RMS, (rather than -18), which is little bit too loud for me, (& my volume is only on 25%).

When the complainant(s) said "too low" maybe they meant too bassy, rather than too quiet.
It is possible to make the voice less intelligible by boosting the bass.
''Processed1'', before-after compression & EQ.wav
(629.14 KiB) Downloaded 5 times
[For some reason, (mic rattle ?), "accountability" sounds like "accountRability"].

kozikowski
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Re: Reducing booming

Post by kozikowski » Wed May 19, 2021 4:41 am

For some reason, (mic rattle ?)
Fair warning, if you apply enough effects, filters, modifications, and corrections, you may get tools fighting each other and odd artifacts start to crawl out from under the rocks.

You may start to run out of fidelity. 44100 sampling frequency used in Audio CDs was a compromise. It's only unconditionally stable out to just over 16,000Hz sound, out of 20,000Hz, the highest possible audible sound pitch. It uses electronic tricks and hearing limits to cover the difference. Studios use 96000 sampling to record your Grammy award-winning album music, not 44100.

That's still not dreadful, FM radio (remember that) sound only goes out to 15,000Hz, but you used pitch shifting.

- Declicked, settings as per Trebor post
- Change pitch -4%


Suddenly, all those high pitch errors safely hidden up where only dogs can hear them might be audible to people. I bet that's where the "mic rattle" is coming from.

Koz

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