Unless the gibberish is the same every time, the repeated sound of your password will still be parsable from a long enough sound recording of your computer usage.

The gibberish is unlikely to ever be the same.

I think it is more accurate to say that the gibberish is unlikely to _always_ be the same.

I think one can tend to create similar gibberish over time. I've worked on a system where I needed to do a new signup every time I wanted to test a feature and I've run into issues where the gibberish I entered matched an account that I had previously created.

Everyone here has accounts in development databases named 'aaa', 'asd', 'asdf', 'qwer', 'hjkl', etc!

Nope, mine are all oeunt, oeunth, huet, uehis, ais, etc

You are a user of the Dvorak layout, I take it? Colemak seems like it would have a different fingerprint.

Yep! Always a bit of fun when someone goes to use my laptop for an end-of-sprint presentation and types a bunch of gibberish infront of all the stakeholders :D