The DiagNorm setting in the metadata is displayed in the "mediainfo" utility. IMO, in the case of Tidal the dialnorm seems excessive at -15 to -20 db Home stereo provides none of the other advantages of dialnorm: providing a referenceįor reduced dynamic range listening conditions, accurate and musical dynamic rangeĬompression, and clipping protection prior to the D/A circuitry." Standards and Practicesįor Authoring Dolby® Digital and Dolby E Bitstreams However, simply adjusting the volume on a "Dialogue Normalization, in simple terms, is exactly the same as turning the volumeĭown a bit on a consumers home stereo. Since Atmos can be listened to on all sorts of devices, from echo studio to headphones to tv's with built in speakers, to sound bars to bookshelf speakers to full range towers, etc., etc., Dolby's algorithm is designed to be compatible across everything without clipping or blowing out the speakers. Dialogue normalization is designed to ensure that the overall volume doesn't overwhelm or clip a system based on average db level of speech or dialogue. Basically the reason Atmos music (and any Dolby programming) has a much lower overall volume is because the metadata is telling the AVR to reduce the volume by (x)db. It's all due to Dolby's dialogue normalization and dynamic range control. Listening to this in post-production, Juritz commented that hearing it played back this way was as close to the sensation of playing the work in situ as he could imagine." This seemed an ideal opportunity to position the orchestras accordingly in surround sound, so for both concertos, orchestra one is positioned in the front channels and orchestra two in the rear. Written for two independent string orchestras, these were recorded with the soloist, David Juritz, standing in the middle of these two groups. (2) Concertos for the Assumption of the Virgin Mary (Concertos for Violin and Double Orchestra)įor the Concertos for the Feast of the Assumption of the Virgin Mary, we employed a different tactic. This is to say the sound stage is spread over the front three channels, whilst the rear channels contain the natural ambience of the Church of St Silas the Martyr to give the listener a realistic representation of the acoustic in which the performance took place. It was recorded and edited in five channels to provide a "typical" surround mix. I know that downloading is against policy - but in this case I have a perfectly valid reason/excuse because of the low volume which can damage your speakers (or your ears) when you turn up the volume and listen to another song. It won't be Atmos anymore but that's fine, most of the songs do not have discrete audio on the height channels anyway. So I will be able to play these tracks from the same media player / PC that I use for my song collection, and I won't need to play them separately on the Apple TV / Firestick and turn on the AVR. In the meantime, I have been downloading/saving some of the original Atmos files from the Tidal streams to my PC (the few that I really like), with the intention of converting them to regular 5.1 FLAC and raising the loudness. Of course, Amazon Atmos music has a completely different issue - it's only available on the Amazon Echo Studio. I've listened to the same Atmos songs from Amazon HD and Tidal and played both of them on the Amazon Echo Studio - the Amazon version does not have the low volume issue. This is something very basic even amateurs would know. I would expect small loudness variations from different songs/mixing/mastering - but there is no way that someone would make a 'mistake' of consistently rendering ALL the Atmos tracks on Tidal with an EXTREMELY low volume. The fact that even the new Atmos releases on Tidal still have the low volume, even though the issue was reported and acknowledged by Tidal two and a half months ago leads me to believe that this low volume is intentional and done for a reason.Īccording to Tidal's response, "the issue is on the Dolby side". On the desktop, if you play the Atmos track, Tidal actually streams a different source (example FLAC) which does not have the low volume issue. The Firestick streams the original Dolby Digital plus with Atmos signal to the AVR/processeor - any loudness normalization (if it's even possible) would have to be done by the receiver, and not by the Firestick device or Tidal app.
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