Key point 1With hyperacusis, the brain doesn’t filter out sounds automatically
In a restaurant, Alex asks the person across from him to repeat something for the third time. His friends think he isn’t paying attention.
🔋 His brain can’t tune out the babble of voices all around him.
Hyperacusis means that sounds are perceived as much louder, stronger or more unpleasant than they are by other people. And we’re talking about completely ordinary everyday sounds – clinking dishes, voices, a coffee machine, the hum of a lamp.
The ears are usually not the problem. The difference lies mainly in how the brain processes sounds.
Normally, an invisible filter in the head sorts the sounds
Every brain receives an incredible number of sounds every second. So that we don’t get overwhelmed, the brain sorts them automatically – without our noticing:
- Important (e.g. the voice of the person I’m talking to) → is brought to the front.
- Unimportant (e.g. the ventilation, conversations at the next table) → is turned down or blocked out entirely.
You may know this filter from the cocktail party effect: at a loud party you can still talk to one person, because your brain pushes everything else into the background.
With hyperacusis as a filtering difference, this sorting doesn’t work or only works weakly. Sounds arrive unfiltered – all roughly equally loud, equally important and all at once.
Hyperacusis doesn’t mean “ears that are too good”. It means that the brain’s automatic filter doesn’t reliably sort out unimportant sounds.
High, shrill sounds are perceived especially intensely
Not all sounds are equally hard to bear. Many people with hyperacusis find high, shrill sounds (high-frequency tones) much more intense than other sounds. A tone that most people find only “a bit unpleasant” can be almost unbearable for them. Three typical examples:
Some sounds really hurt
For some people, certain sounds are not just loud or annoying but genuinely painful. It can feel like stabbing, burning or pressure in the ear or head – sometimes the pain even lingers long after the sound has stopped. That’s why people with hyperacusis often flinch or cover their ears at such sounds. This isn’t exaggeration, it’s a protective reaction.
High-pitched sounds and pain are a common reason why people avoid certain places. Knowing which sounds hurt most makes it easier to protect yourself in a targeted way.
Key point 2Hyperacusis is especially common in autistic people
Autism is not an illness, but a different way the brain processes information. A central part of this is perception: sensory impressions – sounds, light, smells, touch – are often experienced differently, more intensely or with less filtering.
These differences are so typical that they are now explicitly counted among the features of autism. Hearing is one of the most commonly affected senses. That isn’t true for everyone – but it is for very many.
The autistic brain does less automatic pre-sorting
- Less automatic pre-sorting: many autistic brains pick up details very precisely. That is often a strength – but it also means that less gets “thrown away” on its own.
- Less habituation: neurotypical people stop hearing a constant sound (e.g. a fridge) after a short while. For many autistic people the sound stays present – minute after minute.
- Everything carries weight: the brain draws a less clear line between “important” and “unimportant”. The clatter of a fork can get as much attention as what the other person is saying.
This isn’t “making a fuss”, it’s real perception
It is a real, neurological way of perceiving. The person can’t simply switch it off – just as you can’t consciously switch off your own filter.
Key point 3A restaurant then sounds like an unfiltered audio recording
Neurotypical people find this hard to feel their way into, because their filter is always working. These images help you picture it.
Like a phone recording played loudly through headphones
You record the sound in a restaurant on your phone. At home you listen to it through headphones – fairly loud. Suddenly everything is there that you never noticed at the time: every piece of cutlery, every chair, the coffee machine, the laughter three tables away. The microphone has no filter. It treats everything as equally important.
That’s roughly how a restaurant sounds to many people with hyperacusis – only live, with no pause button, and while they’re also supposed to follow a conversation.
One minute in a restaurant: everything at once, everything equally loud
You’re sitting at a table with a friend. She’s telling you something important. At the same time:
And you’re supposed to listen politely, nod, give the right answer – and look relaxed while you do it.
Often you can’t understand the other person at all – because every other sound is layered on top
At first this sounds contradictory: someone who hears everything so intensely should surely understand everything well. Often the opposite is true.
Because the filter is missing, the voice of the person at your table isn’t brought to the front. It is just one of many sounds – and it gets buried under dishes, music and the conversations at the next table. The ears hear the voice, but the brain can’t separate it from the noise. Whole sentences get lost this way or arrive only in fragments.
If someone with hyperacusis often asks you to repeat yourself in a restaurant, answers off the mark or just nods, it does not mean they’re inattentive, uninterested or hard of hearing. Their brain simply can’t separate the important voice from the rest at that moment.
Many people try to cover this up: they lip-read, guess the content from context or just smile. That costs extra energy too.
What helps: sit facing each other so the face is clearly visible, speak a little more slowly and clearly, talk about important things in a quiet place instead – and treat requests to repeat as completely normal.
Like several radios when you’re meant to follow only one
Imagine several radios playing at the same time on different stations, all equally loud. Your task is to follow one single station closely and talk about it afterwards. It can be done – but only with enormous concentration.
Key point 4Loud situations are doable – but they cost far more energy
Restaurants, parties, open-plan offices: people with hyperacusis often manage situations like these. But their brain is running at full tilt while they do.
What others filter automatically, the brain has to do by hand
In loud situations, people with hyperacusis constantly do work that happens “for free” in the background for others:
- They have to actively pick out the right voice and hold on to it.
- They have to actively push away the other sounds – again and again.
- They have to cope with sudden, unpleasant sounds that can really hurt or startle.
- And often they also have to seem normal so that nobody notices. That takes effort too.
They manage it – but at a much higher price
The energy battery after two hours in a restaurant
The picture is simplified, but it shows the core of it: the same dinner doesn’t cost everyone the same amount of energy.
People with hyperacusis can manage situations like these. They go to restaurants, to birthday parties, to the office – and from the outside you often notice nothing at all. The difference is that they pay a much higher price for it. What a neurotypical person manages on the side costs them many times the effort.
Precisely because it can’t be seen from the outside, this effort is easily underestimated – sometimes even by the people themselves. “It went fine” doesn’t mean “it was easy”.
Afterwards the battery is empty – and needs recovery
When the battery is empty, it often shows only later – on the way home or the next day:
- heavy tiredness and exhaustion, sometimes for days
- headaches, irritability, little patience
- a wish for complete quiet and to be alone
- with overload, a shutdown (inner withdrawal, hardly being able to speak) or a meltdown (the overload breaks out outwards)
If someone is completely exhausted after a restaurant visit, it wasn’t “just a dinner”. For their brain it was heavy labour.
If the battery stays empty, burnout and depression become a risk
A draining evening can be made up for with rest. It gets difficult when the high energy use becomes a permanent state – for example because of a noisy open-plan office, lots of social commitments or too little recovery time. Then the battery never really charges again.
Over a longer period this can lead to deep exhaustion. In autistic people this is often called autistic burnout. And depression can develop: joy in things is lost, everything feels heavy, and you withdraw more and more.
If you notice that the exhaustion won’t go away, that your mood has been low for weeks or that nothing brings you joy any more, take it seriously and get help – for example from a family doctor, a psychiatrist or a psychotherapist, ideally with experience in autism. The earlier, the better.
Key point 5The right strategies can save a lot of energy
You can’t simply “repair” the filter. But there is a lot you can do so that less noise gets through, so that energy is spent deliberately and so that recovery is possible.
Muffling sound deliberately
Noise-cancelling headphones
Strongly reduce steady sounds like ventilation or traffic. Good for trains, the office, shopping.
Filtered ear protection
Special earplugs muffle the noise but still let voices through. Ideal for restaurants – and barely visible.
Use it selectively
Use ear protection for loud situations, not all day in quiet surroundings. Otherwise hearing can become even more sensitive over time.
Choosing quiet places, times and seats
- Quiet times: lunch at 11:30 or an early dinner rather than Friday night at 8 pm.
- Quiet places: restaurants with carpet, curtains, upholstery and nooks are usually quieter than modern venues with concrete and glass.
- The right seat: sit in a corner or against the wall, with your back to the room. Away from the kitchen, bar, coffee machine, speakers and entrance.
- Small groups: two or three people are much easier than a big table.
Managing your energy consciously
- Plan ahead: don’t put several loud engagements back to back.
- Build in breaks: step out briefly now and then, into the fresh air or to the restroom – a few minutes of quiet recharge the battery a little.
- Plan recovery: after a loud event, deliberately set aside time for quiet – without guilt.
- Leaving early is allowed: better to leave in a good mood after an hour and a half than to be completely drained after three hours.
Talking about it openly
Many people don’t know what hyperacusis is. One short sentence can change a lot, for example:
“My brain doesn’t filter sounds well. I get tired quickly in loud places. Can we meet somewhere quieter – or can I take the seat in the corner?”
This can help at work too: a quieter desk, headphones in an open-plan office, or the option to do focused work from home.
Getting professional support
- Have your ears checked: an ENT doctor or an audiologist can check whether the ears themselves are involved too.
- Occupational therapy: here you can learn to understand your own sensory processing better and develop strategies for everyday life.
- Sound therapy: with some forms of hyperacusis, guided, gradual getting used to sounds can reduce sensitivity.
- Peer exchange: support groups and autistic communities offer lots of practical first-hand tips.
Being kind to yourself
Hyperacusis is not a weakness or a character flaw. If you know yourself well and take your limits seriously, you have more energy for the things that really matter – including good evenings with friends.
The people around can contribute a lot too
If you know someone with hyperacusis: ask which place suits them. Offer the quiet seat. Don’t take it personally if the person leaves early or needs quiet afterwards. This kind of consideration makes a big difference.
In short
- Hyperacusis means everyday sounds are far too loud or unpleasant – high, shrill sounds especially, and some sounds even hurt.
- As a filtering difference, it means the brain doesn’t automatically sort out unimportant sounds.
- That’s why in loud rooms the very thing that matters – such as the person across the table – often isn’t understood, because every other sound is layered on top.
- It is very common in autism, because sensory input is generally processed differently and with less filtering.
- People with hyperacusis can manage loud situations, but have to spend much more energy than neurotypical people because the brain has to filter by hand.
- If energy use stays too high, exhaustion, autistic burnout and depression can follow.
- Ear protection, smart planning, breaks, open communication and professional support help.