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Active noise control ( ANC ), also known as noise cancellation ( NC ), or active noise reduction ( ANR ), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first. The concept was first developed in the late 1930s; later developmental work that began in the 1950s eventually resulted in ...
If you're looking for great buds that aren't fruit-themed, consider the Sony WF-1000XM4 noise-canceling earbuds, currently on sale at Amazon for $198 (from $279). There are also a lot of other ...
Noise -cancelling headphones alongside a carry case. Noise-cancelling headphones are headphones which suppress unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing . Noise cancellation makes it possible to listen to audio ...
The PlayStation Portable (PSP) is a handheld game console developed and marketed by Sony Computer Entertainment.It was first released in Japan on December 11, 2004, in North America on March 24, 2005, and in PAL regions on September 1, 2005, and is the first handheld installment in the PlayStation line of consoles.
The researchers found that the high genetic risk group had a 14.7-fold risk reduction in incidences of early-onset coronary artery disease, a 2.5-fold risk reduction in early-onset ischemic stroke ...
Bone conduction is the conduction of sound to the inner ear primarily through the bones of the skull, allowing the hearer to perceive audio content even if the ear canal is blocked. Bone conduction transmission occurs constantly as sound waves vibrate bone, specifically the bones in the skull, although it is hard for the average individual to ...
No one could hear anything except the noise in his own head." [41] In 2014, musician Emperor X wrote a deliberately catchy song titled 10,000-Year Earworm to Discourage Settlement Near Nuclear Waste Repositories (Don't Change Color, Kitty) in reference to the " ray cat " idea in nuclear semiotics , attempting to embed a warning message in ...
Acoustic shock. Acoustic shock is the set of symptoms a person may experience after hearing an unexpected, loud sound. The loud sound, called an acoustic incident, can be caused by feedback oscillation, fax tones, or signalling tones. Telemarketers and call centre employees are thought to be most at risk. [1]