h a l f b a k e r yInexact change.
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It might just work..... is that what you want to hear on this site though? [+] |
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I met someone who was working on an audio diagnosis system for trains. A stationary track-side microphone would (briefly) listen to each wheel as the train passed, and hopefully pick up any bearing rattle or whatever, using software. |
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Does it have an option to listen to noises when the engine isn't running? For woodworm and the like? |
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[+], although I suggest it would be difficult to tell some of the taps and rattles apart. |
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[TomP] Even if true, a list of possible things that create that particular noise would be a better starting point than we've currently got. At the very least it gives you a place to point the mechanic (if you trust them) or a way to crosscheck them (if you don't). |
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[sucks through teeth]
Thats gonna cost ya |
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I am imagining a mobile phone app for car problem
detection, the beauty is that just like other apps it
doesn't even really have to work very well. |
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If you need a phone app to diagnose audible
signals from an IC engine, you richly deserve
to have your engine sieze solid. |
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Bone for de-skilling proles even more than
they are already. |
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'Fraid this wouldn't be practical. Every car has their
own sound, every failure its own unique signature as
heard from different locations, etc. |
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I am no expert but I can normally judge when an
alternator is going, in I am guessing quite a few different
makes and models, surely this is of some value? |
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As for de-skilling proles, just wait till you dial up your destination in your rented google car, My guess is Taxi
Drivers in Tokyo, NY & London would be given circa 10
years at best before they are phased out, by a glorified
up market (Web cam + Sat Nav) combo. |
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Welcome to the future: "I need to take a sh@, where's my phone?". |
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And a few years after that: "Do I need to take a Sh@? Where's my phone?" |
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The app could use the accelerometer if available. In fact, vibration analysis for preventive maintenance is done using accelerometers [+] |
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I don't know - my gut feeling is that there are just too many things to listen to here. Your car might have a slightly rusted exhaust system which will be fine for another 50,000 miles but which produces a noise which is 'non-standard' and which conceals the really interesting noise you should be listening for in the transmission. Then, quite a lot of the time you want to listen to noises while you're on the move and the engine is under load, but you'll have to find a way to get throught the road noise. |
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A very good idea, me thinks. + |
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Should be doable to a certain extent, but not easily, and not without a serious amount of research, sampling, etc. to develop. |
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The biggest question is... does it come with a voice feedback which knows when to go: |
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"*teeth sucking noise* I don't like the sound of that. It's going to be expensive!" |
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I guess it'd need a serious disclaimer to avoid 'claims r us' costs sue to mis/false/un-diagnosed issues leading to either unneeded repairs or untreated problems getting worse/more expensive to fix. |
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Now, if your car could output its diagnostic data as audio ... |
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...and play it through your stereo really loud at stoplights... |
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Ok, I am going to bun the idea,but only presuming the app does the output via a CGI Lassie....."What's that Lassie? Tappets on number 4 cylinder.." |
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[n_m-r]'s Lassie: Your engine is running...
ruff. |
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//"What's that Lassie? Tappets on number 4
cylinder.."// |
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The answer is obvious here isn't it? Dogs have a much
better hearing range and sensitivity compared to
humans. They are also reasonably good at processing
that information in varied environments, and can
combine it with input from their other senses. |
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"I'm sorry to say Mr Griffiths, we got a Lab report on
your Accord... our best Lab in fact, Benji, he's uncanny
with VTEC engines if we offer him a bit of bacon.
Anyway, he had a smell at the exhaust he's picked up
pollen and perfume from the air filter, the perfume
matches the passenger seat. He's smelling cooked spark
plugs, but the catalytic converter's clean. 5 minutes
'round the front and he had a good idea. We opened up
the tank and he had it nailed instantly. I'm sorry to say
Mr Griffiths, but your teenage son has borrowed your
car to take out a girl who was between 9-11 of her
particular... er.. woman's cycle, you want to be careful
there... anyhow, he's been thrashing it out in forest,
passing 5 cats, a Nandos and Mr Wagglesworth the west
Highland terrier's house, to impress her but he's cheap
so he filled it up with the cheap stuff half way 'round...
that wouldn't normally matter only your knock sensor
isn't working and now you've had some detonation. I'm
afraid it's the beginnings of rod knock and scorched
plugs, and you'll need to clean the back seats" |
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Now, if your car could output its diagnostic data as audio ...
— BunsenHoneydew, Dec 06 2012 |
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...and play it through your stereo really loud at stoplights...
— normzone, Dec 06 2012 |
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With all the business addresses on the google now, when you paused at the stop light in front of a mechanic's the car could shout for help. |
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Actually, I think you could just upload the sounds to
YouTube or whatever. Eventually you'll crowdsource
the whole deal. |
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Actually, I think you could just upload the sounds to
YouTube or whatever. Eventually you'll crowdsource
the whole deal. |
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This might work. I have an app for timing watches (mechanical wristwatches), and it is pretty remarkable - it will listen to the watch and report the rate, amplitude, beat error and (I think) lift angle, just from hearing the ticks. |
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I wonder if any submarine ever laid off firing a torpedo, because it could hear the enemy ship was soon going the spend six months in port due to engine trouble. |
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Or vice versa with depth charges. |
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//because it could hear the enemy ship was soon going the
spend// |
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...an unfortunate amount of time acquainting itself with
the intricacies of norovirus.. |
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