LabVIEW at 20!

[RobCole]

When I drink ethanol at a suitable frequency, I hear nice harmonics too.

Oops, did I say that out loud?

     Rob

[JeanPierre]

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altenbach a écrit:

(With a ethanol sample I was able to generate some nice harmonics by selecting a suitable reference frequency).

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In other words, altenbach sings when he is drunk...

[chilly_charly]

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JeanPierre a écrit:

In other words, altenbach sings when he is drunk...

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LOL :D:D

il est des no-otres, il a bu son verre comme les au-autres ! :D:D:D

[Ben]

Ignoring the references to inebriating fluids...

Christan wrote "It is amazing how good the human ear is to sense even subtle differences."

I'd say.

I used to be a sailor as in USN and I supported a radar that was part of the "NATO Sea Sparrow Missle System" (now know as "Sea Chicken") wher problems in the reciever were very challenging to chase down. The only piece of gear we had with a bandwidth high enough to look at the IF signal was a spectrum analyzer. Hanging off a radar antenae in heavy seas was rough enough with out trying to keep the spectrum analyzer dry. Well it turns out we could plug a head-set into the IF test port and hear a harmonic of the IF signal! That was the end of using the spectrum analyzer.

Similarly the old 1200 baud modems. I used to be able to wisstle to a modem and negotiate baud rates.

Ben

[Ray.R]

Now I have to find the article...  But from memory, here is somewhat what was proposed..

When the network is good, there are faint sounds in the background like a soothing wind.

Depending on the unwanted activity, there were sounds like moskitoes or other aggressive sounds each attributed to a certain malfunction or attack on the network.  Basically, they referred to it as if you were in the Amazon Jungle (from memory or my interpretation).  What I do remember is that they wanted to try it using other forms of sounds such as classical music, for instance..

They basically wanted the IT person to be able to "hear" what is going on over the network. 

MY ADDON:  Now imagine that everytime some dude downloads some porn... can you imagine hearing a woman moan???  LOL!! 😄

[AnalogKid2DigitalMan]

JLV-

Is this it (ISIC?)

http://www.newsfactor.com/news/Using-Sound-To-Monitor-Networks/story.xhtml?story_id=021000OO7ZX3

[Ray.R]

Yes AKTDM,

Except I believe that the article was from the Ottawa Business Journal.  But the same research!

Thanks!

JLV

... I'm picturing CC's computer doing frog sounds...  😉

[sjurovich]

Took my first LV class in January 1986 (taught by Tony Vento) and wrote my first ground-up app in March-July 1986 (LV 1.2, I think). That first application used LabVIEW to control a stepping monochromator, acquired spectral intensity data at each step, compiled the full scan data into a spectral profile and processed the data to separate the laser line and amplified spontaneous emission (ASE) components. High ASE to Laser line intensity ratio=bad timing as a diagnostic for pulsed dye laser amplifiers. Oh yeah, LV has come a long way...and I have been there for each upgrade.

[Henrik_Volkers]

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@Ben wrote:

Similarly the old 1200 baud modems. I used to be able to wisstle to a modem and negotiate baud rates.

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Hy 'Capt'n Ben Crunch'  still in 2600?

Sound has always been an important part in trouble shooting, maintenance and analysis. Especially in times without other tools. Everyone Most  (ok know: ) Those who haved ruined their ears with walkman/mp3/ipods and who are driving (or responsible for) a mashine (car, production, fueled or whatever) will get a 'feeling' based on sound (and vibration) .  And the good ones will trust their feeling.

But that what the 'Sound&Vib Tool' is good for: hook up the radio to the soundcard/AI and do a self analyzing program! 

Just to my icon: Back in university we played a lot in the sound&vib lab. We used a B&K shaker (Grün&Schwer) and mounted a wineglas on it and fill it with water (Jesus, WINE!) . If you hit the 2. resonance, you get a maximum in the center of the glas and a drop will lift off. So you are able to drink without touching the glas. Hint based on experience: A (bordeaux) wine glas worked best.    And back to topic: That was 20years ago (today, Sgt. Peppers band .... ) 

Message Edited by Henrik Volkers on 06-12-2006 09:54 AM

[DavidBoyd]

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@Ben wrote:

Similarly the old 1200 baud modems. I used to be able to wisstle to a modem and negotiate baud rates.

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Ah, yes, things I hadn't thought about in a while.

My college days were in the crossover period of 300 baud modems and ASR-33 Teletypes with acoustic couplers.  Ben's post reminded me of a 'trick' I could do in the computer lab - whistle the pitch that would cause the modems to reply, and get the row of TTYs to start doing that noisy "chunka-chunka-chunka" thing, from across the room.

And I did get the reference to Cap'n Crunch and 2600 Hz.  Though for the record, my electronics skills at that time weren't yet up to the challenge of building the 'peu de boîte bleue'.

Dave