[MLA] More good news (Spotify)

[Kevin Gross]

Take care that my memory may be faulty on the exact frequency. I said 17
kHz because could never hear it and I know my hearing was only ever good to
16 kHz (worse now I'm sure). I think I know who to ask if we need better
information or examples on this specific contamination. Let me know.

Yes, the stuff in the paper are ideas we developed together. We've done
some persistent work together in encouraging others to adopt them and maybe
it is starting to pay off. Or maybe others are starting to reinvent these
things. That happens often in science and technology -
https://en.wikipedia.org/wiki/Multiple_discovery. The genius heroic
inventor lives mainly in patent law and Ayn Rand books.

On Tue, May 23, 2017 at 10:59 PM, Grimm | Eelco <eelco at grimmaudio.com>
wrote:

> Hi Kevin,
>
> > 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.
>
> The SSL4000G! It would actually be worthwhile to check if that CRT tone is
> indeed above threshold level in the masters...
>
> If so, this means that the BS1770 lowcut frequency should be below 17
> kHz... Florian, can you bring this into the ITU discussion? Or perhaps
> check some old masters first... Bob Ludwig, do you have access to those?
>
> All the best,
> Eelco
> _______________________________________________
> MLA mailing list
> MLA at grimmaudio.nl
> http://grimmaudio.nl/mailman/listinfo/mla_grimmaudio.nl
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://grimmaudio.nl/pipermail/mla_grimmaudio.nl/attachments/20170524/cb8966d3/attachment.html>