Does anyone sometimes have problems recognising common sounds such as a helicopter or an alarm when it's really obvious what it is?
Sometimes this happens, and I know it's really familiar, but I can't recollect what it is. And then suddenly it clicks and I know what it is
Example:
Helicopter sound
Recogition of sound, but not of origin
Thinking: What is it?...machine...what *is* it?...machine...lawnmower? To loud...machine...motorbike? Going overhead...wait! Helicopter!
Even though it was really obvious to start with.
I can't really put it into words very well.
Also, I had this odd thing happen at college once. Here’s what happened:
I went into a room and saw someone talking to the teacher but he seemed to be speaking with no sound, like the teacher was lip-reading what he was saying. I could hear the voice but was blocked out in the background and was not ‘put together’ with the sight of him talking – it was like the sound ‘cut out’/was 'put to back of my mind’ as background noise. Anyway, I wondered why he wasn’t talking with sound, then my brain suddenly put the sound with the vision and he ‘started talking properly’. It was really weird.
Has anyone had similar experiences? 
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I don't have Aspergers, I'm just socially inept
Dodgy circuitry! Diagnosed: Tourette syndrome. Suspected: auditory processing disorder, synaesthesia. Also: social and organisation problems. Heteroromantic asexual (though still exploring)