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The Mosquito machine was invented and patented by Howard Stapleton in 2005, [4] and was originally tested in Barry, South Wales, where it was successful in reducing teenagers loitering near a grocery store. [5] The idea was born after he was irritated by a factory noise when he was a child. [6]
Yitzhak Shamir spinning a gragger Knocking out Haman's name from stones 18th century Megillah reading; children with graggers in the back. A grager (Yiddish: גראַגער, 'rattler'), also gragger, grogger or gregger, [1] is a noisemaking device, most commonly a ratchet, used to make noise by the congregation when the name of Haman is read out during the recitation of the Megillah in the ...
Upsweep is an unidentified sound detected on the American NOAA's equatorial autonomous hydrophone arrays. This sound was present when the Pacific Marine Environmental Laboratory began recording its sound surveillance system, SOSUS, in August 1991. It consists of a long train of narrow-band upsweeping sounds of several seconds in duration each.
A white noise machine is a device that produces a noise that calms the listener [citation needed], which in many cases sounds like a rushing waterfall or wind blowing through trees, and other serene or nature-like sounds. Often such devices do not produce actual white noise, which has a harsh sound, but pink noise, whose power rolls off at ...
A noisemaker is something intended to make a loud noise, usually for fun. Instruments or devices commonly considered "noisemakers" include: pea whistles; air horns, composed of a pressurized air source coupled to a horn, designed to create an extremely loud noise; fireworks, such as firecrackers, bottle rockets, bang snaps and others
Noise cancellation works by creating an "anti-noise" wave 180 degrees out of phase with the original soundwave. This anti-noise wave cancels specific sound frequencies, nullifying this sound ...
A moo box. The moo box or moo can is a toy or a souvenir, also used as a hearing test.When turned upside down, it produces a noise that resembles the mooing of a cow.The toy can be configured to create other animal sounds such as the meow of a cat, the chirp of a bird, or the bleat of a sheep.
A party horn (also known as a party blower or noisemaker) is a horn formed from a paper tube, often flattened and rolled into a coil, which unrolls when blown into, producing a horn-like noise.