Talk:Sound power

message: The table at Sound power with plain sound waves reads the following:
Symbol   	Units 	Meaning
Z = c · ρ	N·s/m³	acoustic impedance
p        	Pa    	sound pressure
ρ        	kg/m3 	density of air
c        	m/s   	speed of sound
Shouldn't it be Z = p/c, since Pa = N/m2 ?
Because
 (m/s) · (kg/m3) = kg / (m2·s)   != N·s/m3
 
 (N/m2) / (m/s)  = (N/m2) · (s/m) = N·s/m3
Or did I miss something?
/Lord E (talk) 14:09, 14 September 2008 (UTC)
thread_title:  Z = c · ρ  - Wrong!? 

message: Sound power level should be merged into this article. --TheJokari (talk) 13:02, 25 September 2008 (UTC)
thread_title:  Merger proposal 

message: Sound power and Sound energy flux are measured in the same units (Watts) and appear to be measuring the same thing. I propose to merge Sound energy flux into this article. -—Kvng 20:06, 16 December 2012 (UTC)
replies: text: Support. It helps prevent confusion with flux measured in W/m^2 as well. Forbes72 (talk) 22:07, 28 March 2015 (UTC)
thread_title:  Another merge proposal 

message: The first section is Correct
After That it goes into Nonsense.
...Agreed, are you helping to revise it? Hopefully I will have time to do part. Altaphon (talk) 04:52, 16 April 2019 (UTC)
thread_title:  This Article is a scientific disaster 

message: The following Wikimedia Commons files used on this page have been nominated for deletion:
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Participate in the deletion discussion at the nomination page. —Community Tech bot (talk) 03:07, 21 October 2018 (UTC)
thread_title:  Commons files used on this page have been nominated for deletion 

message: I just reverted a bunch of recent changes. The first edit of the sequence made on 16 April was incorrect (because the concept of power is not limited to sound radiated by a source), so I tried to revert only that edit, but was unable to. I'm sure the article can be improved, but please make a suggestion on the talk page before implementing. Dondervogel 2 (talk) 07:19, 16 April 2019 (UTC)
replies: text: It is not incorrect, it may be incomplete, and I fully intend to add more information. I think it's an improvement to the mashup that's there now. I'm unaware of the requirement to pass editorial review in Talk before making improvements - if that's the case please provide a reference. Sound power is defined (ISO 80000-8) as "through a surface, product of the sound pressure, and the component of the particle velocity, at a point on the surface in the direction normal to the surface, integrated over that surface." The most general use is in measuring the sound power emitted by a source, irrespective of distance. Altaphon (talk) 04:49, 17 April 2019 (UTC)
replies: text: Right, per WP:BRD, your "bold" edit was OK, but when it was objected to and reverted, it's time to discuss. Dicklyon (talk) 05:49, 17 April 2019 (UTC)

text: I agree with Dondervogel that measuring the power emitted by a source is not the "most general use", but is a particular use of the power concept. Dicklyon (talk) 05:51, 17 April 2019 (UTC)
replies: text:  Yes, BRD is a good rule, and my revert was intended in that spirit. I did not mean to imply otherwise. The ISO definition seems fine, and the power of a source is an important application of that definition. Another application is the power reflected, transmitted or absorbed by a wall. Dondervogel 2 (talk) 06:10, 17 April 2019 (UTC)
thread_title:  Recent edits 

message: An editor stated some concerns about the top few lines of the table, but a discussion of this sort without supporting citations belongs on the talk page. I am reproducing it here:
*"The top three or four lines seem questionable. A 150-dB source should be audible 100 times as far away as a 110-dB source, and a 200-dB source 10 000 times further than a 120-dB source. This would imply that a turbofan aircraft at take-off would be audible 100 times further than a rock concert, and a Saturn V 10 000 times further than heavy thunder. This doesn't seem to be the case, at least not when the sound has to travel along the surface of the earth."
RockMagnetist(talk) 17:02, 4 February 2020 (UTC)
thread_title:  Table of sound powers 

message: S 182.50.65.201 (talk) 11:32, 18 December 2022 (UTC)
thread_title:  Sound power