Hi *! Haven't checked this out in any detail, but the German Institut für Rundfunktechnik (a sort of science outsourcing provider for public broadcast over here, with an impressive track record of ground-breaking work) have released a substantial body of code on object-based audio under an Apache open-source license: https://lab.irt.de/more-open-source-for-open-object-based-audio-workflows/ If anyone gets interested and finds it useful, please give them a little shout-out - I guess our fellow open-source enthusiasts within those institutions can use some support! All best, Jörn -- Jörn Nettingsmeier Tuinbouwstraat 180, 1097 ZB Amsterdam, Nederland Tel. +49 177 7937487 Meister für Veranstaltungstechnik (Bühne/Studio), Tonmeister VDT http://stackingdwarves.net