[MLA] What would Spotify do

[Bob Katz]

Thanks, Ian. That’s very helpful. What it means though, as far as Spotify is concerned, that a delivery with 0 dBTP and LUFS below -14 will not be attenuated. And if it’s just a few occasional peaks with no obvious overshoot in the AAC domain, it could be a good decision. However, I mastered this particular recording with a peak limiter and I’d say every song has at least some peaks to 0 dBTP. Its relatively “low” LUFS reflects its rather wide LRA. 

But Apple will attenuate. It’s really the -14 target we have to try to get Spotify to lower. I think I’ll write the Spotify CE and ask if there’s any movement in that direction. Somehow I doubt it. 

Best 


Bob

My iPhone made me write this. Quotes only below this line. Nothing more to see here. 
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> On May 3, 2022, at 6:10 AM, Ian Shepherd <ian at mastering-media.co.uk> wrote:
> 
> 
> 
> Hi Bob,
> 
> On the default Normal and Quiet settings, based on my testing Spotify will leave the file at unity gain, peaking right up to 0 dBTP (or above, for files where that applies). They only take account of True Peak values when deciding how much positive gain to apply, which is always “none" with Normal and Quiet selected.
> 
> If a subscriber chooses the Loud preference instead, as I understand it they will lift the level to -11 LUFS and add limiting to achieve this result, but only in playlist or shuffle. However since apparently only 17% of users change these preferences, and most probably simply disable normalization, I think the real-world impact of this is thankfully limited to a small number of users.
> 
> Hope that helps !
> 
> Ian
> 
> 
> ***
> Ian Shepherd
> Mastering Media Ltd - Audio Mastering, Blu-ray and DVD Excellence
> http://twitter.com/ianshepherd
> 
> Mastering Media Ltd,
> Kemp House, 152 City Road, London, EC1V 2NX
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> 
>> On 2 May 2022, at 17:32, Bob Katz <bobkatz at digido.com> wrote:
>> 
>> Hi guys. If given a file that’s -16.4 lufs with 0.0 dBTP would they turn it down a dB and call it a day? Or would they try upward norm towards -14 with peak limiting? 
>> 
>> I know  that Apple’s current practice would drop it to -17.4 with -1 dBTP. 
>> 
>> Best
>> 
>> 
>> Bob
>> 
>> My iPhone made me write this. Quotes only below this line. Nothing more to see here. 
>> ----------------------------------------------------
> 
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