Volume normalisation

It is. If normalisation by Spotify was really effective, I would go the extra mile to use it on Sonos via wired line in. Especially for parties where I don't want to be faffing around adjusting sound levels often. Somehow though I am not sure that what Spotify does here, really works to keep sound levels in the same place when mixed album playlists are in use.

This would be worth far more in practice than any more tweaks to obtain better sound quality. But it isn’t happening and I don’t know that is all in the Sonos court.

You do not Normalize by using compression, they are two very different things.

You normalize by changing the volume level of the entire file to a new point htat makes it “normal” to your chosen level.

You compress by changing the volume level of each segment of the music, moving it closer to the zero dB point. (Gated compression has a center dead band that isn’t compressed.)

Timely and well said. Normalisation of the kind explained is what I am looking for, the effect should be the same as when I use the volume controls. I suppose that the challenge is bigger here than it is for compression that involves just an assessment of the one music file in use.

So, when Spotify and others say they do normalisation, which of the two do they mean?!

The starting point for normalization is picking the volume level you will normalize to. It is arbitrary at best, on top of that there are many ways to calculate it. Also many pitfalls if you choose to alter the audio data, if you go that way MAKE BACKUPS first.

Good starting point:  https://emastered.com/blog/audio-normalization

I wanted to play with my Music Library but wanted to avoid making any difficult to revert changes so instead of altering the audio portion I had my normalization program set the ReplayGain Tag that is easily reset to Zero in batch mode.

The LUFs Loudness targets for the most popular streaming services are as follows:

Spotify: -14 LUFS

Apple Music: -16 LUFS

Amazon Music: -9 to -13 LUFS

Youtube: -13 to -15 LUFS

Deezer: -14 to -16 LUFS

CD: -9 LUFS

Soundcloud: -8 to -13 LUFS

Salve, bella fregatura rendersi conto appena acquistato che uno dei migliori sistemi audio multiroom non abbia un sistema di normalizzazione per Spotify. Che mi venga spiegato come si fa ad ascoltare una playlist lavorando o facendo qualcos'altro con un volume che va costantemente su e giù. Siamo nel 2024!  Ho preso solo un sonos one lo sostituisco! 

When will volume normalization be available? Without it, what's the point of the Sonos Amp? Music played through it is only normalized via radio, and most stations have ads. I've noticed that any streaming service will normalize its music through the Sonos app. If I only had one Sonos Amp, I could use any device's player and input it through Line-In, which would already have normalized audio. So why would I spend the money on the amplifier when I could get something better for the same price, since I won't be utilizing Sonos features?

You are correct, if you aren’t going to be using Sonos features, it stands to reason you should not be buying a Sonos device of any kind. 

Next up:  Why people who don’t need to drive shouldn’t be buying a car.

I don't want to beat around the bush. In their advertisements, they should explicitly state that Sonos S2 won't offer any volume normalization through the Sonos app.

Can you name me one other consumer product which specifically advertises things it does not do?