[MLA] Loudness normalization with MQA

[florian.camerer at orf.at]

Hi guys,

I agree with Kevin that using one Metadata field for something it was not originally intended to do is opening a can of worms.
The players should do it right.

Best, Florian



Von: MLA [mailto:mla-bounces at grimmaudio.nl] Im Auftrag von Kevin Gross
Gesendet: Dienstag, 07. Februar 2017 17:27
An: Music Loudness Alliance
Betreff: Re: [MLA] Loudness normalization with MQA

That is not in line with the published ReplayGain standard and would introduce non-factual metadata. I assume you'd propose using the album value in both track and album metadata. To make this fly, you'd have to get consensus that track-based normalization is not useful. I beleive Bob Katz introduced a dance-mix use case where he asserted that track-based normalization was useful.

The better solution is to make players work properly. Make album normalization the default mode. Most players handle missing loudness metadata by applying a fixed, sometimes configurable, attenuation. Players in album normalization mode can use the track normalization metadata if album data is missing. Players should also have strategies for handling playback of material with missing peak level metadata.

Perhaps such advice could be included in the ReplayGain 2.0 documentation. I haven't made progress on finishing that. I have been working on paid work, AES67 and live video networking technology and so my time has been scarce lately.

On Mon, Feb 6, 2017 at 3:59 PM, Grimm | Eelco <eelco at grimmaudio.com<mailto:eelco at grimmaudio.com>> wrote:
> Hey guys.... you probably know my prejudices:  Use album loudness data all the time. If you listened to the demo that I produced you would have no question about that.

The question is: replaygain has two fields of loudness metadata: one for track loudness and one for album loudness. Unfortunately many services just read the track loudness metadata. We _could_ advice Tidal to write the album loudness values in the track loudness fields. What's your opinion on that?

All the best,
Eelco

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