[sdiy] How does your sound perception change while you're falling asleep?

[cheater cheater]

What about perception in the quality of the sound itself, rather than
outright hallucinations or misattributions?

On Fri, Aug 19, 2022 at 5:03 AM Adam (synthDIY) <synthdiy at adambaby.com> wrote:
>
> Yeah, hypnagogic and hypnopompic hallucinations are pretty common, usually visual. Auditory is less common (although I’m sure most of us can recall coming out of a dream with a voice in our ears, only to discover it’s actually a sound coming from outside the window or in the street).
>
> When you think that those are the times when the voluntary parts of the brain are disconnecting/re-connecting to some parts of the peripheral nervous system, it’s no surprise
>
>
> A
>
> > On 19 Aug 2022, at 11:55 am, Ashlyn Black <ashlyn at ashlynblack.com> wrote:
> >
> > Chiming in to add that Exploding Head Syndrome is a Thing(TM).
> >
> > via wiki: "Exploding head syndrome (EHS) is an abnormal sensory perception during sleep in which a person experiences unreal noises that are loud and of short duration when falling asleep or waking up."
> >
> > On 19/8/22 00:56, cheater cheater via Synth-diy wrote:
> >> Hi all,
> >> I'm sure many have noticed that your sound perception changes in the
> >> moment immediately before falling asleep. I was wondering if anyone
> >> would like to describe what effect they hear. Since we all know
> >> synthesizers, synth and audio engineering related terms are going to
> >> be very useful here.
> >>
> >> I suggest writing down whatever you can remember before reading the
> >> rest of the thread, so you don't get influenced. Then read the thread
> >> to see if anything seems familiar.
> >>
> >> If you make any observations in the future, come back to the thread
> >> and add to it.
> >>
> >> My description follows below.
> >>
> >> ------------------------------------------------------------------
> >>
> >> I've been dozing off just now with the AC on (wide band noise, biased
> >> towards LF). The sound suddenly changed to something like a very deep,
> >> quickly animated chorus effect applied to the sound. By quickly
> >> animated I mean it sounded like multiple parallel stages (3-5?) with
> >> separate LFOs where you could hear LFO peaks of the various LFOs maybe
> >> 5 times per second.
> >>
> >> Other times, in a room without wideband noise - eg watching a podcast
> >> on youtube - sound seems to cut off fairly cleanly with a short decay,
> >> like maybe 0.2-0.5s decay. If I'm coming out of it sound will show up
> >> again. If this keeps on cycling I can perceive those holes in sound.
> >> It sounds like the cleanest ducking gate, no click, no coloration.
> >>
> >> I remember back in high school I wasn't getting a lot of quality sleep
> >> so once or twice before falling asleep i'd hear auditory
> >> hallucinations. Usually what amounts to children's voices laughing or
> >> saying something I can make out but not understand. Not exactly
> >> related, but one time I was so tired at school that I dozed off
> >> between classes. A classmate tried waking me up and I started talking
> >> to him, still in a dazed state, but no real words came out, just
> >> gibberish. That's never happened before or since, and it was odd
> >> enough that I took note of it.
> >>
> >> Best regards
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