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Topic: Spotify has new low-data mode (HE-AACv2 24 kbps) (Read 1010 times) previous topic - next topic
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Spotify has new low-data mode (HE-AACv2 24 kbps)

  Spotify has new low-data mode for slow 2G/3G networks.

I suspect it's HE-AACv2 with its typical artifacts of SBR+Parametric Stereo. Or maybe it's xHE-AAC at very low bitrate. Quality is ok if You have bad connection.

Can someone confirm?


Re: Spotify has new low-data mode

Reply #1
Doesn't Spotify use Vorbis? I'd be surprised if they suddenly shelled out the AAC licensing cost just for their data saver mode?! Maybe they're using Opus?

Re: Spotify has new low-data mode

Reply #2
It's HE-AACv2 24 kbps

https://support.spotify.com/us/using_spotify/system_settings/high-quality-streaming/

"Low - Equivalent to approximately 24 kbit/s (HE-AACv2 format).
Normal – Equivalent to approximately 96kbit/s (Ogg Vorbis format).
High – Equivalent to approximately 160kbit/s (Ogg Vorbis format).
Very high – Equivalent to approximately 320kbit/s (Ogg Vorbis format).
Automatic – Dependent on your network connection. "

24 kbps is too low in my opinion. But I imagine it's the way to go on 2G/3G networks.
~36-48 kbps will be considerably better.  Parametric stereo is quite bad in headphones.

Re: Spotify has new low-data mode (HE-AACv2 24 kbps)

Reply #3
Doesn't Spotify use Vorbis? I'd be surprised if they suddenly shelled out the AAC licensing cost just for their data saver mode?! Maybe they're using Opus?

As far as I know, they also use AAC -- at higher bit rates, of course -- when streaming to a Chromecast and possibly other similar devices.

Re: Spotify has new low-data mode (HE-AACv2 24 kbps)

Reply #4
The Low setting was added mostly for Spotify Lite (new app) to match the ideas of Android Go and it's target on limited cellular speeds and data usage.

 

Re: Spotify has new low-data mode (HE-AACv2 24 kbps)

Reply #5
It's HE-AACv2 24 kbps

https://support.spotify.com/us/using_spotify/system_settings/high-quality-streaming/

"Low - Equivalent to approximately 24 kbit/s (HE-AACv2 format).
Normal – Equivalent to approximately 96kbit/s (Ogg Vorbis format).
High – Equivalent to approximately 160kbit/s (Ogg Vorbis format).
Very high – Equivalent to approximately 320kbit/s (Ogg Vorbis format).
Automatic – Dependent on your network connection. "

24 kbps is too low in my opinion. But I imagine it's the way to go on 2G/3G networks.
~36-48 kbps will be considerably better.  Parametric stereo is quite bad in headphones.
Seems more like something you put on in the car or train, so you'll hardly notice artifacts against all the noise.

I'm shocked that they went with AAC over Opus, though. I thought they were working on shifting their entire stack to Opus a while back, so I wonder what motivated this decision?

 
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