FrankF wrote: ↑Thu Aug 05, 2021 12:28 pm Very interesting that there's no mention of Ampex tapes in all of that.
That said, my abiding memory of Ampex is peppered with swear words and flecked with the spittle of despair, as I transferred all my recordings from a Fostex analogue to an AKAI digital, and shovelled up the fragments from the carpet...
It's true some Ampex tapes exhibited binder hydrolysis, but so did some 3M Scotch and Sony tapes. Possibly some BASF tapes and others. Countless recordings were affected. The standard temporary fix of controlled baking before winding or playing tapes has been in use for decades.
Unfortunately because it involves raising the temperature of the tape to 50 deg C or more for maybe 24 to 48 hours or more, tape baking will tend to make the print through problem, the subject of this thread, even worse. But it's been found to be a sensible tradeoff compared to possibly ruining the recording by attempting a play without first baking out the moisture.
I once tried to manually remove pre and post echo in a solo voice recording running to some six hours. It involved sampling some room ambience and cutting and pasting the ambience into all silences between the speech. Sometimes the speech wasnt enough to mask all remaining echoes but overall it made for a more listenable product. Maybe someone has developed a software tool which can sense silences prone to print though echoes and automatically substitute in clean room ambience.
https://richardhess.com/notes/formats/m ... ing-tapes/