Luigi Russolo, a Futurist artist of the very early 20th century, was perhaps the first noise artist. His 1913 manifesto, L'Arte dei Rumori, translated as The Art of Noises, stated that the industrial ...
Because of differing fundamental concepts of music, the languages of many cultures do not contain a word that can be accurately translated as "music," as that word is generally understood by Western c ...
Russolo's essay explores the origins of man made sounds."Ancient life was all silence" Russolo states that "noise" first came into existence as the result of 19th century machines. Before this time th ...
Most often, musicians are concerned not to produce noise, but to minimise it. Noise reduction is of particular concern in sound recording. This is accomplished by many techniques, including use of low ...
In conventional musical practices sounds that are considered unmusical tend to be treated as noise. Oscillations and Waves defines noise as irregular vibrations of an object, in contrast to the period ...
American inventor Hiram Percy Maxim, the son of Maxim gun inventor Hiram Stevens Maxim, is usually credited with inventing and selling the first commercially successful models circa 1902 (patented 30 ...
The energy density of sound waves decreases as they spread out, so that increasing the distance between the receiver and source results in a progressively lesser intensity of sound at the receiver. In ...
Typical materials used for electromagnetic shielding include sheet metal, metal screen, and metal foam. Any holes in the shield or mesh must be significantly smaller than the wavelength of the radiati ...
By the 1950s, systems were created to cancel the noise in helicopter and airplane cockpits. Noise-cancelling aviation headsets are now commonly available.Currently, most noise-cancelling headsets use ...
The US Patent for an ‘Exhaust muffler for engines’ was awarded to Milton O. Reeves and Marshall T. Reeves of Columbus, Indiana of the Reeves Pulley Company on 11 May 1897. US Patent Office applicati ...
The signal received by the LNB is extremely weak and it has to be amplified before downconversion. The low noise amplifier section of the LNB amplifies this weak signal while adding the minimum possib ...
Low noise amplifiers are the building blocks of any communication system. The four most important parameters in LNA design are: gain, noise figure, and non-linearity and impedance matching. The design ...
A hush kit is a device for reducing noise from an engine. It is typically used on a low-bypass turbofan engine in older commercial aircraft.Jet aircraft generate a lot of noise, contributing to noise ...
Rotor noiseEngine noiseTransmission noiseThe noise from a rotor can be divided into several distinct sources, which will be described as follows:Thickness noise Thickness noise is dependent only on th ...
Dolby noise reduction is a form of dynamic preemphasis employed during recording, plus a form of dynamic deemphasis used during playback, that work in tandem to improve the signal-to-noise ratio. Whil ...
