In case you didn't know, Freesound has an API: https://freesound.org/docs/api/
And publications: https://scholar.google.com/scholar?q=freesound
I believe it's managed by the Music Technology Group at Universitat Pompeu Fabra https://www.upf.edu/web/mtg
You can support it with donations: https://freesound.org/donations/donate/