Question

Positron · 17th December 2003, 04:52 PM

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, 06:07 PM

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

Tim

Positron · 17th December 2003, 07:51 PM

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, 07:58 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, 12:20 AM

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

Positron · 18th December 2003, 03:37 AM

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, 08:10 AM

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, 01:48 PM

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, 09:01 PM

But since 4 wasn't an option...

Tim

17th December 2003, 04:52 PM	#1
Positron diyAudio Member Join Date: May 2003 Location: Morton, Illinois	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

17th December 2003, 06:07 PM	#2
Sch3mat1c diyAudio Member Join Date: Jan 2003 Location: Milwaukee, WI	I don't watch that show but is it real dB or the common form on this board, dBV... Tim __________________ Seven Transistor Labs Projects and Resources

17th December 2003, 07:51 PM	#3
Positron diyAudio Member Join Date: May 2003 Location: Morton, Illinois	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.

18th December 2003, 12:20 AM	#5
Kilowatt diyAudio Member Join Date: Nov 2001 Location: Harlowton, MT, USA	I wonder what a person would do, since it is none of those for true decibels or anything else. __________________ - "With power amplifiers, negative feedback is a good thing, and positive feedback can induce destructive oscillation, but with people, positive feedback is a good thing, and negative feedback can induce destructive oscillation"

18th December 2003, 03:37 AM	#6
Positron diyAudio Member Join Date: May 2003 Location: Morton, Illinois	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.


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17th December 2003, 07:58 PM	#4
richwalters diyAudio Member Join Date: Sep 2003 Location: Alps:Tube amp designs over 150W, SMPS guru.	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

18th December 2003, 01:48 PM	#8
Positron diyAudio Member Join Date: May 2003 Location: Morton, Illinois	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".

18th December 2003, 09:01 PM	#9
Sch3mat1c diyAudio Member Join Date: Jan 2003 Location: Milwaukee, WI	But since 4 wasn't an option... Tim __________________ Seven Transistor Labs Projects and Resources

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