True, but they cease emanating when the cavitation source is turned off. Presumably this was done, and reported. If not, this story would not be acceptable at any reliable scientific journal.
That would be consistent with the idea that the sonic energy was necessary for the creation of the neutrons. The question might remain; are the neutrons the result of "sono-fusion" or "sono-fission"? My comments were just to point out that a source of neutrons was possibly being added to the soup and that this could introduce considerable confusion about the source of any emanating neutrons.
Is there a key indicator that you are aware of which would argue for sono-fusion of hydrogen over some other high-temperature, high-pressure induced reaction?
The initial cold-fusion experiments were basically irreproducible. At least these sonic experiments seem to be something that many labs could reproduce and study. Progress will be quick, I think, if that is truly the case.