Quote:
In addition to the specification of the BWF files, the EBU has recommended – in EBU docu-
ment R85 [4] – the audio content of BWF files when they are used for the exchange of pro-
gramme material without prior consent. The phrase “without prior consent” means that EBU
Members will normally accept such material. For instance, document R85 recommends a
sampling frequency of 48 kHz
. If the receiving organization is willing to accept material
which has been sampled at 44.1 kHz, this can still be supplied as a valid BWF file but only
after this has been mutually agreed


https://tech.ebu.ch/docs/techreview/trev_274-chalmers.pdf