This thread reminded me (I had completely forgotten all of this, until now!) that occasionally when I was a kid, through to my early 20's, becoming more and more rare over that period, I used to have weird, short experiences that I would describe as "everything sounds angry". These would happen maybe once a year.
I've never actually looked this up before, so I just googled that phrase and found the first few links there's a lot of other people describing my exact experiences, but no one knows a name for it. The first one has multiple people reporting the same thing, but the other two links don't seem to find any responses from people who understand.
http://www.medhelp.org/posts/Neurology/Surroundings-becoming-weird-and-fast-intense-loud/show/1097402?page=1
http://answers.yahoo.com/question/index?qid=20080528045810AAxwGKs
http://forums.psychcentral.com/other-mental-health-discussion/114941-everything-i-hear-sounds-angry.htmli just had my most intense episode about 10 minutes ago when i was shaving, shaving is usually relaxing for me, but rather than just a light shave it was more like an intense, angry rain forest massacre with metal music and the crazy screaming of mundane things in my head like..."HMMM BETTER TAKE A BIT OFF THE MOUSTACHE.......I"LL DO MY SIDEBURNS TOMORROWW!!!...."
It's like how part of our brain is really good at seeing faces, so we see them in all sorts of patterns easily -- I guess in the same way, we must have a part of the brain that's really good at guessing the emotional state of someone who's speaking to us (i.e. empathising with the speaker).
In these experiences, that part of the brain seems to go into overdrive, and it starts empathising with everything, and informing oneself that the object that is causing the sound is angry/agitated/frustrated. The object doesn't have to be a person -- no matter what it is, it becomes anthropimophized as being angry.
At the same time, everything is louder and faster, and the sense of hearing is heightened. It's like the world is in fast-forward, while actually being the same speed.
However, the actual perception of sound is unchanged. I objectively know that the sounds are exactly the same as normal... but they're simultaneously louder and faster (I know that doesn't make sense... words fail!).
Footsteps sound normal, but my brain says "those footsteps are frustrated". Someone talking to me will sound completely normal, and I know they're not upset, but at the same time, it sounds like they're yelling... My thoughts or inner voice is in all caps. I'm aware of the sound of my own breathing, or heartbeat, and I know that they're calm breaths, but they sound like the calm breaths are angry --- not the calm breaths of an angry person, but that the inner emotional state of the breaths themselves is anger.
Initially I was confused and probably frightened (I can't remember how young I was when this first happened) and I used to try and make it go away as soon as possible. I realised that if you just distracted yourself, it would go back to normal, like forgetting about a mosquito bite. Or if I spoke to someone, it would go away pretty quickly
However, they were so rare and I was so inquisitive that very quickly these episodes became a great curiosity. Instead of making the experience stop, I would focus on the sounds and try and make it last as long as possible to study it, because it was so... eldritch, otherworldly. I always tried to find a pattern behind the cause of these, but couldn't find anything common, besides maybe being tired, and I was always alone (or if with others, in silence, e.g. reading) when it came on.
I had that shit when I was young too, it lasted just a few months though.. Its funny, cause It was so hard to explain that I never really talked about it, but I remember talking to my mom "mom, sometimes Im looking at something, like the door, and a fear comes to me, like theres something really serious about that door all of sudden".
Older, when I think about it, I was taking those as probably some sort of panic attack.
The way you describe it is really interesting, different than how I would: I always seem it as pure incarnated fear without a reason, like the brain produced fear, but since you dont have any reason to feel it, you associate to where you are looking. It was as intense as if you are about to die, like if theres a life threat going on at the moment. It lasted very few seconds, and gave you that kind of feeling making you want to do fetal position.
I think I was 12 or younger when those started to happen.