World’s Strangest

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Early Sound Amplifiers

Photo: Noise for Airports Noise for Airports has a gallery of early sound amplifier/locator technologies. He quotes a 1939 issue of Science News Letter about these efforts: The picturesque triple or quadruple sets of horns, looking like gigantic versions of old-fashioned ear trumpets, that are used by listeners for airplanes, are only artificial external ears that can [...]