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Twelfth Monkey

'What will they think of next?'

Pink noise.  Article about a new Mercedes in Focus says it uses this as part of its sensing-a-crash preparations, issues a burst of it and this helps the ear by triggering a reflex that helps protect it against very loud sounds.  Such as a car crash.

How the fuck does that all work?  Can't tense the eardrum, surely?  I'd have thought that would make it more prone to damage.
Chris M Wanted a V-10

It makes noise that cancels out the noise of a car crash, a bit like travel headphones make noise that cancels out the whooshing" background noise in aeroplanes
JohnC

Next thing they will blacken the windscreen in the milliseconds before impact so that you don't get to see it.

I wonder in the years ahead when cars drive themselves and have artificial intelligence, if they will start to take chances and nudge each other just to have a bit of fun and shake up the passengers a bit!
PhilD

Re: 'What will they think of next?'

Twelfth Monkey wrote:


How the fuck does that all work?  Can't tense the eardrum, surely?  I'd have thought that would make it more prone to damage.


Doesn't it say in the article?!
Twelfth Monkey

Nope, and Chris, it implies it preps the body's reflexes, so that's not it.

A panic-sensitive windscreen, eh?  As an idea, it's got legs...
Bob Sacamano

Porsche were working on a set of driving glasses that went  completely black if they  sensed danger.
PhilD

Re: 'What will they think of next?'

Twelfth Monkey wrote:


Can't tense the eardrum, surely?



I've been working out my stapedius muscle at the gym, maybe that would help?
Grampa

I'm going to feel very vulnerable driving the Morris Minor!
Dr. Hfuhruhurr

A friend has been plagued with tinnitus since a crash (and airbag deployment) seven years ago. I guess he'd have been glad to have something like this.
BeN

Funny. They were talking about this at a Merc event I was at earlier this week. It was all very medical and probably only a real doctor could figure it out.
Giant

Fascinating stuff.

Chris M Wanted a V-10 wrote:
It makes noise that cancels out the noise of a car crash, a bit like travel headphones make noise that cancels out the whooshing" background noise in aeroplanes


Noise cancelling only works for constant frequency noise, such as aircraft engine noise, as the speakers play the inverse wave to the noise, which added to the actual noise creates no wave at all. The system can't predict noises, it samples the constant noise to then create the inverse. Chaotic noises such as in an accident can't be predicted, get the sampled wave wrong and it could actually add to the noise.
boc70

Re: 'What will they think of next?'

PhilD wrote:
Twelfth Monkey wrote:


Can't tense the eardrum, surely?



I've been working out my stapedius muscle at the gym, maybe that would help?


That's probably why you got banned from the gym.
PhilD

Re: 'What will they think of next?'

boc70 wrote:
PhilD wrote:
Twelfth Monkey wrote:


Can't tense the eardrum, surely?



I've been working out my stapedius muscle at the gym, maybe that would help?


That's probably why you got banned from the gym.



PG

https://www.mercedes-benz.com/en/...n-the-split-second-before-impact/

Yes, apparently it does pre-tense the eardrum, thereby protecting it from the loud noises - crash, airbags - of a crash.
Twelfth Monkey

Reading that it sounds more like it decouples the inner ear a little, rather than directly affects the eardrum.  Fascinating stuff and indeed, 'what will they think of next?'

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