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Charles Edmond Prince led the development of throat microphones for the British during World War I for use in the noisy and windy environment of aircraft cockpits. Over a 3 year period from 1915-1918 they went through a series of prototype and production handheld "airplane telephones" before arriving at a hands free throat mic incorporated into a leather flying helmet.
In telecommunication and character encoding, the term cancel character refers to a control character which may be either of: "CAN", "Cancel", U+0018, ...
Noise-induced hearing loss (NIHL) is a hearing impairment resulting from exposure to loud sound.People may have a loss of perception of a narrow range of frequencies or impaired perception of sound including sensitivity to sound or ringing in the ears. [1]
Environmental noise can be any external noise that can potentially impact the effectiveness of communication. [2] These noises can be any type of sight (i.e., car accident, television show), sound (i.e., talking, music, ringtones), or stimuli (i.e., tapping on the shoulder) that can distract someone from receiving the message. [3]
Plantronics, Inc. is an American electronics company — branded Poly to reflect its dual Plantronics and Polycom heritage — producing audio communications equipment for business and consumers.
Figure 3. While thermal noise has an almost constant power spectral density of , a band-pass filter with bandwidth = passes only the shaded area of height and width .Note: practical filters don't have brickwall cutoffs, so the left and right edges of this area are not perfectly vertical.
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