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2. Broadening top - Wikipedia

   en.wikipedia.org/wiki/Broadening_top

   Broadening top (a.k.a. a megaphone pattern [1]) is technical analysis chart pattern describing trends of stocks, commodities, currencies, and other assets. Broadening Top formation appears much more frequently at tops than at bottoms. Its formation usually has bearish implications. [2]

3. Template:Megaphoneduck - Wikipedia

   en.wikipedia.org/wiki/Template:Megaphoneduck

   Template:Resolved/See also, the smaller family of thread-level hatnote templates, similar to the above but with a box around them; any template above can be converted to one of those with {} Template:Table cell templates/doc, the family of table-specific templates that work only in tables; Category:Image with comment templates

4. Megaphone - Wikipedia

   en.wikipedia.org/wiki/Megaphone

   A megaphone, speaking trumpet, bullhorn, blowhorn, or loudhailer is usually a portable or hand-held, cone-shaped acoustic horn used to amplify a person's voice or other sounds and direct it in a given direction. The sound is introduced into the narrow end of the megaphone, by holding it up to the face and speaking into it, and the sound waves ...

5. Talk:Megaphone - Wikipedia

   en.wikipedia.org/wiki/Talk:Megaphone

   The article states that the TOA EM-202 was the world's first transistorised microphone, but the current history pages on the TOA website (possibly changed since the article was written as the reference link no longer works properly) suggest that, while it was the first electric megaphone produced, the company did not produce a transistorised ...

6. Public address system - Wikipedia

   en.wikipedia.org/wiki/Public_address_system

   A woman using a small handheld electric megaphone at a demonstration in Portugal. Electric megaphones use a type of horn loudspeaker called a reflex or reentrant horn . In the 1960s, an electric-amplified version of the megaphone, which used a loudspeaker, amplifier and a folded horn, largely replaced the basic cone-style megaphone.

7. Template:Technical drawings - Wikipedia

   en.wikipedia.org/wiki/Template:Technical_drawings

   Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

8. Test card - Wikipedia

   en.wikipedia.org/wiki/Test_card

   Test cards typically contain a set of patterns to enable television cameras and receivers to be adjusted to show the picture correctly (see SMPTE color bars).Most modern test cards include a set of calibrated color bars which will produce a characteristic pattern of "dot landings" on a vectorscope, allowing chroma and tint to be precisely adjusted between generations of videotape or network feeds.

9. Horn loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Horn_loudspeaker

   A horn loudspeaker is a loudspeaker or loudspeaker element which uses an acoustic horn to increase the overall efficiency of the driving element(s). A common form (right) consists of a compression driver which produces sound waves with a small metal diaphragm vibrated by an electromagnet, attached to a horn, a flaring duct to conduct the sound waves to the open air.