Talk:Megaphone

message: But how do they work? What are the acoustics involved? What's the optimal shape for a megaphone? — Kieff 00:45, 13 January 2007 (UTC)
replies: text: The optimal shape depends on the desired shape of the antenna - exponential is a common choice as it produces a relatively tight cone.  However, there is a problem with diffraction around the edges which can lead to the classic trumpetlike sound of the megaphone.  A tractrix cone avoids this, but makes a less directional beam.  —Preceding unsigned comment added by 71.212.137.2 (talk) 17:00, 5 October 2007 (UTC)

message: I removed the request for citation.  A Google search on Loud Hailer returns 124000 pages, the first 10 of which are all megaphones.  Maybe this is only a Britishism?  An investigation into the term would be interesting to read but I don't think that there's any doubt as to its meaning. Tre1234 00:20, 7 March 2007 (UTC)
thread_title:  Loud Hailer 

message: Britannica is known to be significantly less accurate than Wikipedia for core articles; please find at least one additional source to correlate with Britannica references.  —Preceding unsigned comment added by 199.173.225.25 (talk) 19:48, 3 September 2009 (UTC)
thread_title:  Britannica 

message: In the article it states that the first electric megaphone was produced in 1954, yet later on it says the electric megaphones were used at the National Republican and Democratic Conventions of 1920. Something isn't right here...  — Preceding unsigned comment added by 75.158.115.42 (talk) 19:24, 20 February 2012 (UTC)
replies: text: Good point.  Those must have been the first (stationary) public address systems, the technology at that time was nowhere near capable of building portable bullhorns.  Public address systems were sometimes called "megaphones".  I'll try to find some sources on that.  --ChetvornoTALK 19:08, 4 April 2013 (UTC)
thread_title:  Invention of the Electric Megaphone 

message: Readme65 (talk • contribs) 12:45, 5 April 2013 (UTC)
replies: text: Just a warning.  Wikipedia does not allow the inclusion of promotional material in its pages (see WP:SPAM).  If you include your website on the page it will be removed.  --ChetvornoTALK 13:10, 5 April 2013 (UTC)
thread_title:  Megaphone Crowd Control 

message: The corkscrew shape of a bull's horns don't look anything like a speaking trumpet. Just curious.  — Preceding unsigned comment added by 69.157.172.231 (talk) 23:51, 26 July 2014 (UTC)
thread_title:  Where did the word 'bullhorn' come from? 

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thread_title:  External links modified (January 2018) 

message: "The distinctive distorted sound of a human voice amplified by a megaphone is widely recognized, from its use in train and bus stations and sports arenas. Applied to music, it gives the sound of an antique acoustic gramophone record player."
It is not. I've owned several mechanical record players & know enough about the subject of distortion. The 2 produce significantly different effects.
86.10.62.169 (talk) 01:11, 19 April 2018 (UTC)
thread_title:  Nature of distortion 

message: Why has a lighter been used as a scale? Does the photograph particularly need a scale? 81.145.156.110 (talk) 15:35, 15 December 2022 (UTC)
thread_title:  Sports megaphone photo