This was something I noticed, too, when I'd leave my Dyson fan on at night in my bedroom. To me, it didn't sound like voices, it sounded vaguely like chiptune music.
Of course, I'm a lifelong gamer, so I think that reinforces the idea that it's something your brain is trying to interpret--and hence it's shaped by things familiar to my brain. My wife heard something similar on a different night and described it as something else. But we were both in agreement that it definitely went away as soon as I turned off the fan.
I find it rather interesting when it happens, actually. It's my brain subconsciously doing creative musical improv--which I am far too inept to do consciously. I wish I could remember the melodies long enough in the morning to try my hand at transcribing them.
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This was something I noticed, too, when I'd leave my Dyson fan on at night in my bedroom. To me, it didn't sound like voices, it sounded vaguely like chiptune music.
Of course, I'm a lifelong gamer, so I think that reinforces the idea that it's something your brain is trying to interpret--and hence it's shaped by things familiar to my brain. My wife heard something similar on a different night and described it as something else. But we were both in agreement that it definitely went away as soon as I turned off the fan.
I find it rather interesting when it happens, actually. It's my brain subconsciously doing creative musical improv--which I am far too inept to do consciously. I wish I could remember the melodies long enough in the morning to try my hand at transcribing them.