Independent analysis of the raw ping data has indeed shown the acoustic pings are indeed false
This was reported by dailymail.co.uk (or similar?), notorioulsy unreliable (in fact borderline comic) source of information, or rather misinformation (there were examples before of their fine journalistic work). They claim the 'independent' analysis was done by experts who wish to remain 'anonymous'. In fact official Australian search authorities stated nothing of the kind, no such work by 'independent' organizations was mentioned at all. The only reason so far given for believing the signals weren't genuine was that the aircraft was not found.