One thing very clear about the Right's reaction to Christine Ford's testimony was that her voice drove them nuts - I've read scores of comments that her voice was too "little girl" to be real - it was all an act, and/or proof that she's mentally disturbed or an emotional wreck. One of the other.
(Oh, and how ludicrous are the wingnut "body language" videos that have become a thing in the last couple of years, with their ridiculous appeal to expertise in uncovering the secret meaning of the body language of figures the Right want to imagine destroyed. It's just pathetic, but they really believe an area of "science" that was never more than flim flam from hucksters. The one on Ford was particularly welcomed with open arms.)
Anyway, I thought - if there is any truth at all that her vocals at the hearing was an act, there would be surely be someone, somewhere who has sat in a lecture or talk of hers and recorded it, and could prove that she sounds completely different in "real life". What's the bet that there were Wingnuts desperate to turn up such material to attack her credibility.
But where are we now: oh, that's right - no sign of any other voice recording has surfaced anywhere. Despite her being an academic who (I presume) has had lecturing as part of her job for much of her career?
I think it extremely safe to assume that no evidence will ever arise - because it never existed, and it was a case of wingnut's imagination run wild - again.