The Open Multitrack Testbed

We introduce the Open Multitrack Testbed, an online repository of multitrack audio, mixes or processed versions thereof, and corresponding mix settings or process parameters such as DAW files. Multitrack audio is a much sought after resource for audio researchers, students and content producers, and while some online resources exist, few are large and reusable, and none allow querying audio fulfilling specific criteria. The test bed we present contains a semantic database of metadata corresponding with the songs and individual tracks, enabling users to retrieve all pop songs featuring an accordion, or all tracks recorded in reverberant spaces. The open character is made possible by requiring that the contributions, mainly from educational institutions and individuals, have a Creative Commons license. 1