The Google Pixel 2 and Pixel 2 XL are both equipped with the Now Playing feature, which provides an always on music recognition service to owners of these phones. In building the system, which requires a small "fingerprint" of a tune to allow the technology to find the name of a song, Google used "deep neural networks." Now Playing is designed to work on-device, even without an internet connection.

When launched in 2017 along with the second-generation of Pixel handsets, Now Playing was far superior to Google's then server-side music discovery feature ...


원문출처 : https://www.phonearena.com/news/Google-wants-its-new-version-of-Sound-Search-to-name-that-tune-in-under-10-seconds_id108892