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"Bill Gill"
In one respect you are right +1 dB is just detectable.
That is how it was originally defined.
It was /never/ defined that way.
The bel is the logarithm (to the base 10) of a power ratio. Decibels are
ten times that. That a decibel just happens to be the smallest change in
level that can be easily detected is total coincidence.
Phil Allison wrote:
"Bill Gill"
It takes ten times the power to seem twice as loud.
Ten times the power is 10 dB, that is 10 times as loud.
** Bollocks.
Most would say it was 2 or maybe 3 times as loud.
Twice as loud would be 3 dB.
** Bollocks again.
+3dB is only slightly louder.
+1dB is almost unnoticeable.
In one respect you are right +1 dB is just detectable.
+3dB is twice the power. To my
mind that is twice as loud.
"Phil Allison"
I said "phase or timing differences", when I should have said "phase".
Above about 1kHz, phase differences are not used for directionality.
** But time of arrival for any transient is CRUCIAL !!
You're knowledgeable tons of things, but here you're wrong.
The ear cannot and does not hear phase
This is fact (read any book on acoustics). I confirmed it 44 years ago
when I used an oscillator with fixed and variable-phase output feeding
stereo headphones.
** Phase differences are not heard on headphones at all -- with *SINE*
waves.
They are.
But with speech, music and other real sounds, reverse phase is VERY
obvious.
You didn't read what I wrote.
The bel is the logarithm (to the base 10) of a power ratio.
Decibels are ten times that.
Errm, 1/10_th surely.
Yes twice as loud would be twice the voltage, butBill Gill <billnews2@cox.net> wrote:
On 4/2/2014 8:38 AM, Phil Allison wrote:
"Bill Gill"
It takes ten times the power to seem twice as loud.
Ten times the power is 10 dB, that is 10 times as loud.
** Bollocks.
Most would say it was 2 or maybe 3 times as loud.
Twice as loud would be 3 dB.
** Bollocks again.
+3dB is only slightly louder.
+1dB is almost unnoticeable.
.... Phil
In one respect you are right +1 dB is just detectable. That is
how it was originally defined. +3dB is twice the power. To my
mind that is twice as loud. +10 dB is 10 times the power. Again
that would be 10 times as loud. Check the math. The calculation
is 10 * log(10) P2/P1.
Bill
Twice as loud should be twice the voltage. Forget power.
Greg
The transmission unit (TU) was devised by engineers of the Bell
Telephone Laboratories in the 1920s to replace the MSC. 1 TU
was defined as ten times the base-10 logarithm of the ratio of
measured power to a reference power level.[5] The definitions
were conveniently chosen such that 1 TU approximately equaled
1 MSC (specifically, 1.056 TU = 1 MSC).
"Bill Gill"
** You anencephalic ?
If not - you are doing a spectacular impersonation of one.
Demented chimpanzees have more insight.
.... Phil
The bel is the logarithm (to the base 10) of a power ratio.
Decibels are ten times that.
Errm, 1/10_th surely.
Nope. There are ten decibels in one bel.
On Fri, 4 Apr 2014 05:43:35 -0700, "William Sommerwerck"
grizzledgeezer@comcast.net> wrote:
The bel is the logarithm (to the base 10) of a power ratio.
Decibels are ten times that.
Errm, 1/10_th surely.
Nope. There are ten decibels in one bel.
My point stands. A decibel is 1/10 of a bel.
That's what I said before. It's NOT what you wrote.
The bel is the logarithm (to the base 10) of a power ratio.
Decibels are ten times that.
Errm, 1/10_th surely.
Nope. There are ten decibels in one bel.
My point stands.
A decibel is 1/10 of a bel.
That's what I said before. It's NOT what you wrote.
The bel is the logarithm (to the base 10) of a power
ratio. Decibels are ten times that.
Errm, 1/10_th surely.
Nope. There are ten decibels in one bel.
My point stands. A decibel is 1/10 of a bel.
That's what I said before. It's NOT what you wrote.
I didn't realize we were in the 2nd grade. Thanks for your"Bill Gill"
** You anencephalic ?
If not - you are doing a spectacular impersonation of one.
Demented chimpanzees have more insight.
.... Phil
Phil Allison wrote:
"Bill Gill"
** You anencephalic ?
If not - you are doing a spectacular impersonation of one.
Demented chimpanzees have more insight.
I didn't realize we were in the 2nd grade.
implied agreement with what I said.
Bill
"Black Iccy" wrote in message
news:2o6vj9dinajsgjkdoefljdj332o72vna1h@4ax.com...
On Fri, 4 Apr 2014 05:43:35 -0700, "William Sommerwerck"
grizzledgeezer@comcast.net> wrote:
The bel is the logarithm (to the base 10) of a power
ratio. Decibels are ten times that.
Errm, 1/10_th surely.
Nope. There are ten decibels in one bel.
My point stands. A decibel is 1/10 of a bel.
That's what I said before. It's NOT what you wrote.
In a rare show of magnanimity, Professor Marvel accepts the criticism.
What I meant to say was that "Decibels are obtained by multiplying bels
by ten." What I wrote was ambiguous.
You caught me on one my pet peeves. Ever seen an FM tuner with the dial
labeled "x 1MHz"? The displayed number is actually the frequency
/divided/ by 1MHz.
You caught me on one my pet peeves. Ever seen an FM tuner with the dial
labeled "x 1MHz"? The displayed number is actually the frequency /divided/ by
1MHz.
You caught me on one my pet peeves. Ever seen an FM tuner with the dial
labeled "x 1MHz"? The displayed number is actually the frequency /divided/
by 1MHz.
I don't know. Do you think you can find anybody who would"Bill Gill"
Phil Allison wrote:
"Bill Gill"
** You anencephalic ?
If not - you are doing a spectacular impersonation of one.
Demented chimpanzees have more insight.
I didn't realize we were in the 2nd grade.
** You are cunt brain - not me.
You need a hand grenade shoved up you fucking ass.
... Phil
Thanks for your
implied agreement with what I said.
Bill