Volume is even in all three tracks... until I export

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Elrich
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Joined: Mon Jan 29, 2018 2:05 pm
Operating System: macOS 10.15 Catalina or later

Volume is even in all three tracks... until I export

Post by Elrich » Wed Feb 03, 2021 4:43 am

I'm working on a podcast with three participants (recorded on Zoom), each in a separate channel. Using both Amplifier and the volume sliders, I got the volume across all three channels to be about the same. But I exported an MP3, and in the MP3 some participants are louder than others. I adjusted the sliders in Audacity several times, but I still can't seem to get a file where all three participants are at the same volume. What can I do? Why is this a case of "what you hear is not what you get"?

Elrich
Posts: 25
Joined: Mon Jan 29, 2018 2:05 pm
Operating System: macOS 10.15 Catalina or later

Re: Volume is even in all three tracks... until I export

Post by Elrich » Wed Feb 03, 2021 4:48 am

FYI, Audacity 2.4.1 on a Mac running 10.15.7 Catalina.

Trebor
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Re: Volume is even in all three tracks... until I export

Post by Trebor » Wed Feb 03, 2021 5:28 am

Elrich wrote:
Wed Feb 03, 2021 4:43 am
I'm working on a podcast with three participants (recorded on Zoom), each in a separate channel.
Using both Amplifier and the volume sliders, I got the volume across all three channels to be about the same ...
If you are judging equal volume visually: by equal amplitude, that is not necessarily the case.
The over-the-phone voice needs to be have a larger amplitude than the in-the-studio voice,
to be perceived as equally loud, (because the phone/zoom/skype voice lacks bass).

There are free loudness-meter plugins, which are more reliable than judging by ear.

Elrich
Posts: 25
Joined: Mon Jan 29, 2018 2:05 pm
Operating System: macOS 10.15 Catalina or later

Re: Volume is even in all three tracks... until I export

Post by Elrich » Thu Feb 04, 2021 1:43 am

Thanks for your response.

I tried installing the app you linked to, but it seemed the only thing it would let me do for free was install it - it said that to analyze a file I'd need the pro version.

Anyway, I tried again in Audacity, and then ran the exported AIFF file through Levelator, and got something I was pleased with.

Thanks.

Trebor
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Joined: Sat Dec 27, 2008 5:22 pm
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Re: Volume is even in all three tracks... until I export

Post by Trebor » Thu Feb 04, 2021 1:58 am

Elrich wrote:
Thu Feb 04, 2021 1:43 am
... Levelator ...
There is a levelator-style plugin for Audcaity: LevelSpeech2.NY ,
( but it's not psychoacoustic: it does not take into account equal-loudness curves ).

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steve
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Re: Volume is even in all three tracks... until I export

Post by steve » Thu Feb 04, 2021 6:41 pm

Audacity 2.4.2 has "Loudness Normalizing". See: https://manual.audacityteam.org/man/lou ... ation.html
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