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 Positron 17th December 2003 05:52 PM

Question

How many saw the "Millionaire" program today and their question?

A 30db signal is how much louder than a 10db signal?

A. 3
B. 200
C. 100
D. 1000

 Sch3mat1c 17th December 2003 07:07 PM

I don't watch that show but is it real dB or the common form on this board, dBV... :rolleyes:

Tim

 Positron 17th December 2003 08:51 PM

That is all that is given

That is all that was given. I assume it was true db, but if you want, give an answer for both.

 richwalters 17th December 2003 08:58 PM

A howler....Men suffer a hearing loss as age progresses from some 5dB by age of 40 and more like 15dB by the age of 60. As I'm between the two, I like my music really loud. Further subtract dB's from effects of cow bells, throw-in some tinnitus and the answer is ....... I'm xxxx stone deaf!

rich

 Kilowatt 18th December 2003 01:20 AM

I wonder what a person would do, since it is none of those for true decibels or anything else. :xeye:

 Positron 18th December 2003 04:37 AM

Right on Kilowatt

Right on my man. The lady answered 3, which is about as close as she could have come, but the "correct" answer given was 100. It was the \$64,000 question, so she lost 32 grand.

100 would be approx correct for the power output increase of 20db, but the question had to do with loudness increase.

I emailed ABC, "Millionaire" and explained the situation, and asked them to correct it.

 Sch3mat1c 18th December 2003 09:10 AM

Re: Right on Kilowatt

Quote:
 Originally posted by Positron 100 would be approx correct for the power output increase of 20db, but the question had to do with loudness increase. I emailed ABC, "Millionaire" and explained the situation, and asked them to correct it.
Eh? Now we're definetly talking real dB ('cuz loudness is a figure of power), and 30-10 = 20dB, chug thru the antilog and you get a 100x ratio, period.

Tim

 Positron 18th December 2003 02:48 PM

Nope

True, 100 times the power represents approx 20db increase in output power represented in watts.

But there is a big difference between output power and what a human hears as "loudness".

A good rule of thumb, from my understanding, is that every 10db increase represents about a doubling of "loudness". So 20db would sound approx 4 times as loud to the person listening, not 100 times as "loud".

 Sch3mat1c 18th December 2003 10:01 PM

But since 4 wasn't an option...

Tim

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