[mtlynch]

Yes, that's the one. Thanks! And thanks for writing it, assuming you're the author.

[Ndymium]

I'm not, the author was my colleague at the time. I can only hope to be half as brilliant as him.

[rovr138]

First time I saw it was here, https://boingboing.net/2017/08/28/this-blind-software-develo...

It has the audio samples in case it's useful