Thus spake Serge Auckland:
Snipped
There *was* pretty severe compression, the output from the codec was
MP2 at 128kbps, so around 9-10:1 Sweep rates were 1.5, 5 or 20
seconds for a 20-20k sweep. (You may know the Lindos LA100 test set)

Good heavens, haven't seen reference to the Lindos LA100 since I calibrated
one (pair?) back in 1991 - made one hell of a change from calibrating &
repairing HP8903A/B's or bucket loads of RF generators.