<div dir="ltr">The album loudness normalization all the time recommendation dates back to our whitepaper in 2012:<div><br></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div>"We propose that album normalization be turned on as a default, in order to satisfy the aesthetics</div><div>of the artist and album producer and the majority of playback situations."</div></blockquote><div><br></div><div>As I recall, Eelco and I couldn't get Bob Katz fully on board with this so an accompanying footnote says:</div><div><br></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div>"We believe album normalization best serves the artist's intent in most playback scenarios. One possible
exception is for dance parties where it may be desirable to use per-track normalization so that ballads
play as loudly as the loud songs regardless of the normal aesthetics. We suggest that deactivation of album
normalization be set on a playlist basis, remaining in force by default for all other playlists."</div><div><br></div></blockquote>With regards to tones, there was a certain 1980's vintage mixing desk that had an integrated CRT for the automation system. I have been shown commercial digital releases from that with the CRT horizontal scanning contaminating the audio with a 17 kHz tone. I forget the level but loud enough for someone with great hearing to notice. Definitely very annoying for a dog or LUFS meter.<div><br></div><div>Kevin</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, May 23, 2017 at 9:02 PM, Robert Ludwig <span dir="ltr"><<a href="mailto:gatewaybob@mac.com" target="_blank">gatewaybob@mac.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Hi Eelco and Ian,<div><br></div><div>This is all amazing. Using Album normalization for everything is something that just never occurred to me, thanks for out-of-the-box thinking, Eelco!</div><div><br></div><div>Yes, I've know Buddy Judge pretty well for over 5 years now, we worked together during the “pre-release” stage of MFiT. I met him in person in California and he has always been very straight forward with me. I’m so glad to finally read SOME rationale for why Apple has not turned on Sound Check. </div><div><br></div><div>I had two questions:</div><div><br></div><div>1. I agree that all services should use the same algorithm for normalization.</div><div><br></div><div>Eelco, I’m not clear about this:</div><div>VERY often we do a single that is being released <u>before</u> the album is finished. </div><div>How will the average album level be determined if there is no album with which to measure when the single is released?</div><div><br></div><div>2. Does Sound Check measure highly compressed music any better than BS1770 (I assume -4)? I’d be surprised if it did.</div><div><br></div><div>That is mind-blowing that someone would put 20kHz tones into the music in order to make it louder. </div><div><br></div><div>I’m very encouraged by all of this!</div><div><br></div><div>All my best,</div><div>Bob L.</div><span class=""><div><br></div><div><br></div><div><div><blockquote type="cite"><div>Yesterday Buddy Judge, senior product manager at Apple and responsible for iTunes, came to me after my presentation. We had a beer and then we even went for dinner together ("all on Tim" :-). Buddy is a cool guy and a musician (I guess Bob Ludwig knows him well since he is also the guy behind "Mastered for iTunes"). Buddy told me a few interesting things that may help us understand why normalization was not turned on by default yet:<br>1. The artistic integrity is very important for Apple. Just like Tidal they do not like that with track normalization the loudness integrity of an album is disturbed. Buddy told me it had never come to his mind to advocate using album normalization even in shuffle mode, but he found it an interesting concept that he would love to test.<br>2. Buddy said that if normalization would be turned on by default, all streaming services should use the same type of normalization so mastering engineers can anticipate to it and would not have to make seperate masters for every different platform (because many will likely still aim for being the loudest). ITU BS1770 seemed to make most sense to him, although he knew that compressed music is measured a little too loud by BS1770. Album normalization with the loudest track aligned to target level also made most sense (in my presentation I showed that when normalizing the _average_ album level (like currently in iTunes), the loudness of the loud hit tracks would only be known when the full album is finished - this is a clear no-go for a mastering engineer).<br><br>We promised to stay in regular contact the next few months and all in all this feels _very_ encouraging. <br><br>But this brings me to an important note. Pop music mastering engineers might even be worse than Italian commercial mix engineers. So if the latter ingest 20 kHz tones just above the relative gate threshold, to gain 1 or 2 dB of level, this will probably happen to pop masters too. Florian, it will become even more important to convince ITU to add the HF low pass filter to K weighting, so we better make sure that this development is not delayed too much...<br><br>Cheers,<br>Eelco<br><br><br><br>______________________________<wbr>_________________<br>MLA mailing list<br><a href="mailto:MLA@grimmaudio.nl" target="_blank">MLA@grimmaudio.nl</a><br><a href="http://grimmaudio.nl/mailman/listinfo/mla_grimmaudio.nl" target="_blank">http://grimmaudio.nl/mailman/<wbr>listinfo/mla_grimmaudio.nl</a><br></div></blockquote></div><br></div></span></div><br>______________________________<wbr>_________________<br>
MLA mailing list<br>
<a href="mailto:MLA@grimmaudio.nl">MLA@grimmaudio.nl</a><br>
<a href="http://grimmaudio.nl/mailman/listinfo/mla_grimmaudio.nl" rel="noreferrer" target="_blank">http://grimmaudio.nl/mailman/<wbr>listinfo/mla_grimmaudio.nl</a><br>
<br></blockquote></div><br></div>