Check this out - its a clip from a Noise Reduction job I am doing for a client. It was recorded teleconference style.
How in gods green earth do you get that hideous sound out. I have done quite a bit to it from the original, removing the high end pitchiness that resided around 7.3k, and just basic noise floor reduction and a bit of voice enhancement with a little bit of EQ.
From my training and experience, I almost want to say its impossible since its embedded distortion. There is no way of repairing the vocals through some kind of interpolation method.
Any thoughts? De-Essing just lowers the volume of a small band of frequencies and ruins the dialog. Multi-band compression doesnt work because the noise is broadband. There is no way of fixing it using the spectrograph in RX2 because it creates muffled audio and doesnt recreate any kind of voice semblance.