Y B Blue - how blue LED improves the CD playback

[Peter Daniel]

Originally posted by Elso Kwak
Hi Peter,
I a sorry but I can't corroborate your findings.
See also:
http://db.audioasylum.com/cgi/m.pl?f...en&r=&session=

It may depend on player and the way the light is applied. My CD is on the outside and I didn't experiment much with LED placement. However, what I've heard so far makes me eager to investgate it even more. In my system, there is definitely an improvement.

[HarryHaller]

"Add a 500-1k resistor in series and your batteries will last longer."

Is this true? Won't adding a resistor across a battery cause current to flow and discharge you batteries. Why would want to do this? Why would you post this statement which seems to be untrue by every bit of physics that I know? Can you explain the resoning behind this statement?

H.H.

[Steve Eddy]

Originally posted by Peter Daniel
But I will loose some of that brightness that makes my disks sound better.

Then by all means, burn some batteries.

se

[Steve Eddy]

Originally posted by HarryHaller
Can you tell us what part of the posted review was non-factual.

Virtually all of it within the context it was given. But if you want some specifics:

<i>Yes, it is quite interesting that in adding some noise to the signal, we can actually get more information back.

It permits the recovery of some information whose energy was not sufficient... To drive a zero to a one or the other way around? Exactly.

And at this time you don't see the noise, but you see the signal, which existed before.

Here are two levels: the noise of the LSB, which is dither, and the noise we add with the blue laser light in the analog domain.

We apply the light--the treatment--as the laser reads the data, while dither is added afterward, of course.

In the analog domain, you know, noise decreases slowly, continuously, so that even under the noise floor it is possible to retrieve some information. But with digital, under the LSB, there is no more information!</i>

Is it non-factual that a blue laser or LED can cause optical noise or some other difference in how the laser reads the CD?

No, but that's not what's being claimed.

Why does a non tweak company like magnavox put a green LED in thier player?

I've no idea. It could be used for a biasing diode for all I know (LEDs are used by some for biasing diodes as they tend to be less noisy). What does Magnavox claim it's in there for?

Will eggs not move in a carton if you shake them hard enough?

If a hen-and-a-half lays an egg-and-a-half in a day-and-a-half, how many elephants does it take to mix a martini?

Is dither non-factual?

Sure it's factual. What's not factual is that the blue LED is applying LSB dither.

se

[Steve Eddy]

Originally posted by HarryHaller
"Add a 500-1k resistor in series and your batteries will last longer."

Is this true? Won't adding a resistor across a battery cause current to flow and discharge you batteries.

I didn't say to add a resistor across anything, let alone across a battery. Please refrain from posting non-factual information.

se

[peranders]

I like those "odd" ideas which pops up every now and then. I wonder why they never reach Scandinavia?

This remark was really honest, it lightens up bored swedes like I but it takes a little bit more to be convinced.

[Steve Eddy]

Originally posted by peranders
I like those "odd" ideas which pops up every now and then. I wonder why they never reach Scandinavia?

This remark was really honest, it lightens up bored swedes like I but it takes a little bit more to be convinced.

Depends just what you're trying to be convinced of. What exactly are you wanting to be convinced of?

se

[HarryHaller]

I quoted you verbatim.

"Add a 500-1k resistor in series and your batteries will last longer."


I asked a perfectly legitimate question then and expected an answer. Or you were free to ignore it of course.

"Is this true? Won't adding a resistor across a battery cause current to flow and discharge you batteries."

Where is the non-factual information?




Here is some factual infomation about things that will get you put in the Sin Bin.

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Some of the greatest discussions have come as a result of off-topic replies. If something interesting does arise that warrants further discussion then continue your discussion privately over email, or even better start a new thread and link to it. This rule will of course be used with discretion.

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Violation of forum rules will result in users having their accounts suspended and/or terminated, at the discretion of the moderators.

These 4 rules will be enforced in good faith to keep the discussion quality level and the level of peer respect, high.

Just a friendly reminder. I am not looking for trouble and I think the moderators have a pretty short fuse about now from some of the post as of late.

H.H.

[yves]

if you are using blue leds, pls do not look directly
at it. Blue leds are known to be bad for your
eyes.
I don't know the exact mechanism or reason, but I do
know that in one manufacturer who makes leds,
all the people who handle blue ones have to wear
some filter spectacles to protect their eyes - no
kidding.
If anyone knows the full reason, perhaps they
might like to share?

Yv

[Steve Eddy]

Originally posted by HarryHaller
Here is some factual infomation about things that will get you put in the Sin Bin.

I've read the rules, thanks.

And I'll gladly serve my time in the Sin Bin without so much as a whimper if you can point me to the rule which prohibits pointing out the posting of non-factual information.

se