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A sounding board, also known as a tester and abat-voix is a structure placed above and sometimes also behind a pulpit or other speaking platform that helps to project the sound of the speaker. It is usually made of wood.
The string gently vibrates the board, and despite their differences in size and composition, makes the board vibrate at exactly the same frequency. This produces the same sound as the string alone, differing only in timbre. The string would produce the same amount of energy without the board present, but the greater surface area of the ...
Sounding board, an attachment to a pulpit to assist a human speaker; Mixing console, used to combine electronic audio signals; Soundboard (computer program), a web application or computer program with buttons that play short, often humorous sound clips; Soundboard, a quarterly publication of the Guitar Foundation of America
A late 19th-century speaking trumpet used by firefighters A small sports megaphone for cheering at sporting events, next to a 3 in (8 cm) cigarette lighter for scale. From the Ancient Greek era to the nineteenth century, before the invention of electric loudspeakers and amplifiers, megaphone cones were used by people speaking to a large audience, to make their voice project more to a large ...
The National Recording Registry is a list of sound recordings that "are culturally, historically, or aesthetically significant, and inform or reflect life in the United States." [ 1 ] The registry was established by the National Recording Preservation Act of 2000, [ 2 ] which created the National Recording Preservation Board , whose members are ...
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The Voyager Golden Records are two identical phonograph records which were included aboard the two Voyager spacecraft launched in 1977. [1] The records contain sounds and data to reconstruct raster scan images selected to portray the diversity of life and culture on Earth, and are intended for any intelligent extraterrestrial life form who may find them.