News for hackers. Stuff that matters.

A comment on Google Pixel 2 and 2 XL announced. Parent comment

Re:Google Pixel 2 and 2 XL announced by raverbashing on Wednesday October 04, 2017 @02:54PM (#15403294)
I wonder how much space this takes on the device. How many signatures does it keep and how often is this updated
[ Parent | on HN ]
Re:Google Pixel 2 and 2 XL announced by thebooktocome on Wednesday October 04, 2017 @04:08PM (#15404105)
It's not very significant. Basically it stores some distances between peaks in each song's spectrogram which can then be further compressed.

Even supporting a database of millions of songs would be possible.

[ Parent | on HN ]
Re:Google Pixel 2 and 2 XL announced by raverbashing on Thursday October 05, 2017 @05:26AM (#15407747)
If each signature occupies an effective space of 1k (not sure how feasible this is), then for 1000 songs this would take 1M, 10M for 10k songs, etc

Every year gives us around 100 popular songs (add a % of location-specific popular ones), so it seems the plan is feasible.

[ Parent | on HN ]
Re:Google Pixel 2 and 2 XL announced by NathanCH on Wednesday October 04, 2017 @05:21PM (#15404814)
Spotify has 30 million songs.

Even if it takes up a small amount of space, it's basically a non-feature.

[ Parent | on HN ]
Re:Google Pixel 2 and 2 XL announced by joshuamorton on Thursday October 05, 2017 @01:26AM (#15406836)
>Spotify has 30 million songs.

Many of those songs have never been played[1]. There's a really (really, really, really) long tail.

[1]: http://forgotify.com/

[ Parent | on HN ]
Re:Google Pixel 2 and 2 XL announced by thebooktocome on Thursday October 05, 2017 @12:19AM (#15406665)
The index can be highly compressed, see for example

https://blog.afterthedeadline.com/2010/01/29/how-i-trie-to-m...

[ Parent | on HN ]