Really freaky. Please help ease my mind

[Unbornlegend123]

So I just got this pixel 3 today and I know Google has the feature to tell you what song is playing around you. But I did not have my sim card in the pixel and it was in no way connected to the internet in any way via hot spot or open wifi. But yet it was still able to tell me what song was playing on the radio. How is this possible? This honestly is giving me a tin foil hat type moment how could it have a connection to tell me the song? I even changed the radio station with a completely different genre and it identified that to. HOW IS THIS POSSIBLE!!!!

 

[wangdaning]

Using microphone, I am guessing the now playing has microphone permissions.

 

[woahnelly]

I believe there's an on device dB it can reference for 'Now Playing' - so able to identify many tracks without a connection.

 

[cdwinchester]

Yes this is an offline Feature. There is a database on the device so the feature works completely offline.
And yeah this ist impressive and a little bit scary.