There is a word describing a weird hearing anomaly. I’m looking for that word. (Meaning, this question has a factual answer, which is why I put it in GQ.)
Here is the anomaly: when a person is speaking, the person listening actually hears 2 voices. One voice has the normal pitch, and the other voice is at a different frequency, producing something that sounds like the Borg.
What is the name for this hearing issue?