I'm A "little Nerdy Dork"

[LightningGSX]

Decibels are not quantities of anything, not even sound.They are the ratio between 2 different levels of power.Bels(in this case) are the relationship between amplitude and energy, decibels are 1/10th of a Bel.Bels are logarithmic, and its complicated even further by the fact human hearing is logarithmic as well.

3 dB = double the intensity
10 dB = ten times the intensity, but twice the perceived sound level

In terms of amps and speakers:
2X the amplified power = 3 dB
2X the speakers = 6 dB
2X the perceived loudness = 10 dB

Engines:
2X the horsepower = 3 dB
4X the engines = 6 dB
10x the horsepower = 10 dB

difference between 100 dB and 200 dB = 10x10x10x10x10x10x10x10x10x10 or 10 billion times the intensity=2x2x2x2x2x2x2x2x2x2 or 1024 times the perceived loudness

[Enes]

anyone have a spare brain?

[SlowWhite]

ya I'm lost also

[LightningGSX]

You really don't need to understand it.If you ever needed to figure out dB(I don't know why you would), just get a calculator that has a Log(arithm) function.The log of 2(2X power) is .301, which is in Bels, so in dB it's 3.01(commonly refered to as 3 dB).Log of 3 is .477 or 4.77 dB.Log of 4 is .602 or 6.02 dB.Log of 10 is 1 or 10 dB.

In terms of human sound perception, it takes 10 times the sound output, for us to perceive it as a 2X increase.

[Goat Blower]

I remember just a bit of this shit from my loud stereo days 10 years ago.

[niterydr]

Originally posted by LightningGSX@Aug 18 2004, 11:43 AM
Decibels are not quantities of anything, not even sound.They are the ratio between 2 different levels of power.Bels(in this case) are the relationship between amplitude and energy, decibels are 1/10th of a Bel.Bels are logarithmic, and its complicated even further by the fact human hearing is logarithmic as well.

3 dB = double the intensity
10 dB = ten times the intensity, but twice the perceived sound level

In terms of amps and speakers:
2X the amplified power = 3 dB
2X the speakers = 6 dB
2X the perceived loudness = 10 dB

Engines:
2X the horsepower = 3 dB
4X the engines = 6 dB
10x the horsepower = 10 dB

difference between 100 dB and 200 dB = 10x10x10x10x10x10x10x10x10x10 or 10 billion times the intensity=2x2x2x2x2x2x2x2x2x2 or 1024 times the perceived loudness

how is the standalone coming?
LOL!

[Matt D.]

Thanks for clrearing that up, Eric.

It appears we've weeded out the intellectuals from the dumbasses.

[Enes]

speak for yourself Mat!

i am still not weeded out!

-E

[Raptor]

At least you got the title of the thread correct

[LightningGSX]

Originally posted by Raptor@Aug 18 2004, 03:41 PM
At least you got the title of the thread correct

Yep, I admit it, I'm a nerd.But it's OK, because the chicks still dig me

hmy: you have way to much time on your hands!

[LightningGSX]

Originally posted by finch63tsi@Aug 18 2004, 05:10 PM
hmy: you have way to much time on your hands!

I wish that was the case.

LMFAO I wish i did 2!!!

[Raptor]

Originally posted by LightningGSX+Aug 18 2004, 05:11 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (LightningGSX @ Aug 18 2004, 05:11 PM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-finch63tsi@Aug 18 2004, 05:10 PM
hmy:&nbsp; you have way to much time on your hands!

I wish that was the case. [/b][/quote]
You would if you weren't always sleeping or "napping" :slap:

[Halon]

Originally posted by LightningGSX@Aug 18 2004, 12:34 PM
You really don't need to understand it.

We use dB reading everyday when reading the power out of our transmitter on our radar. I don't go as far as breaking it down to all that shit cuz that's a little past me. All I know is that if we up the dB by 3 we double our power output. I don't know insane specifics. Guess that's why I'm a tech and not an engineer.

[2003eclipse]

Originally posted by LightningGSX@Aug 18 2004, 11:43 AM
Decibels are not quantities of anything, not even sound.They are the ratio between 2 different levels of power.Bels(in this case) are the relationship between amplitude and energy, decibels are 1/10th of a Bel.Bels are logarithmic, and its complicated even further by the fact human hearing is logarithmic as well.

3 dB = double the intensity
10 dB = ten times the intensity, but twice the perceived sound level

In terms of amps and speakers:
2X the amplified power = 3 dB
2X the speakers = 6 dB
2X the perceived loudness = 10 dB

Engines:
2X the horsepower = 3 dB
4X the engines = 6 dB
10x the horsepower = 10 dB

difference between 100 dB and 200 dB = 10x10x10x10x10x10x10x10x10x10 or 10 billion times the intensity=2x2x2x2x2x2x2x2x2x2 or 1024 times the perceived loudness

Hey there Mensa how do you ever learn this shit, if your sleeping 98% of the day?

[Matt D.]

Originally posted by Enes+Aug 18 2004, 02:20 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Enes @ Aug 18 2004, 02:20 PM)</td></tr><tr><td id='QUOTE'> speak for yourself Mat!

i am still not weeded out!

-E [/b]

<!--QuoteBegin-Enes@Aug 18 2004, 11:56 AM
anyone have a spare brain?[/quote]
That comment weeded yourself out.

[Matt D.]

Originally posted by me612@Aug 18 2004, 07:42 PM
We use dB reading everyday when reading the power out of our transmitter on our radar. I don't go as far as breaking it down to all that shit cuz that's a little past me. All I know is that if we up the dB by 3 we double our power output. I don't know insane specifics. Guess that's why I'm a tech and not an engineer.

The past couple weeks my cable modem was randomly losing connection. A tech came out, changed a cable and a splitter, and the signal went from -15db to -9db, a gain of 6. My connection has never been better.

[FattyBoomBatty]

Originally posted by LightningGSX@Aug 18 2004, 11:43 AM
2X the perceived loudness = 10 dB

you are correct except for this. this is a subjective statement. what one person describes as twice as loud might not be twice as loud to another person.


anyway, in the other thread, i might not have said it right, but what i meant with 6 db was pressure. double the power is +3db, double the pressure is +6db. sorry.

[Halon]

ya that 6dB gain shoulda quadrupalled the power of whatever signal was coming through there. Prolly why you gotta super connection now!! Our radars output is at about 46dB