Re: Warning lights

On Tue, Mar 29, 2005 at 08:39:13AM -0600, Jan Depner wrote:
> On Tue, 2005-03-29 at 05:02, Steve Harris wrote:
> > Joern's suggestion about meters measuring things like mono compatibility
> > seems like a good one though I have a strong aversion to adding more
> > meters to jamin's main UI as its allready pretty complicated, and I'd like
> > to think we can just jack's modular-ness to bring in external meters where
> > neccesary.
> > 
> > But how about some warning lights? Like those on bashboards that tell you
> > things like your injectors are clogged and the coolant is overheating.
> > Could just be a row of icons that are normally off, and light up if
> > something suspicious like phase problems or DC offsets are detected. I have
> > code for that stuff allready, so it shouldn't be that hard.
> > 
> 
>     How do you detect phase problems without using the "jellyfish"
> meter?  If you can do it I can slap some blinking lights in there
> somewhere.  Just let me know when you've got the code ready.

You can do it by spotting trends in in the wobbly jellyfish shape, if its
concave on one side and convex on the other then thats a bad sign IIRC,
also if its significantly wider than it is taller. But to make things easy
theres a horizontal meter at the bottom, red = bad :)

Things we could detect and display in a dashboard lights sense are:
	DC offset
	Non-parametric correlation (the jellyfish meter horiz scale)
	Balance bias
and
	Mains hum, though I hope users can hear that, and it has i18n
		problems so lets not bother

Other ideas? The much needed cheezyness and youre-too-tired-get-some-sleep
detectors are probably too hard for 1.0 :)

- Steve


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