Acoustic fingerprinting

MusicBrainz is a project by the MetaBrainz Foundation that aims to create a collaborative music database that is similar to the freedb project. MusicBrainz was founded due to the restrictions placed on the Compact Disc Database (CDDB), a database for software applications to look up audio CD information on the Internet. MusicBrainz has expanded its goals beyond serving as a CD metadata repository, evolving into a structured online database for music information, including details about artists, performers, and songwriters.

music application

American audio recognition and cognition company

Gracenote, Inc. is a company and service that provides music, video, and sports metadata and automatic content recognition (ACR) technologies to entertainment services and companies worldwide. Formerly CDDB ("Compact Disc Data Base"), Gracenote maintains and licenses an Internet-accessible database containing information about the contents of audio compact discs and vinyl records. From 2008 to 2014, it was owned by Sony, later sold to Tribune Media, and has been owned since 2017 by Nielsen Holdings. In 2019, Nielsen Holdings announced plans to split into two separate publicly traded companies,

condensed digital summary (“fingerprint”) deterministically generated from an audio signal, that can be used to identify an audio sample or quickly locate similar items in an audio database

music identification system