CCCH9008 Noise Pollution and Control in HK Two important characteristics of sound or noise Frequency of Sound Sound is the quickly varying pressure wave travelling through a medium. When sound travels through air‚ the atmospheric pressure varies periodically. The number of pressure variations per second is called the frequency of sound‚ and is measured in Hertz (Hz) - cycles per second. Loudness A loud noise usually has a larger pressure variation and a weak one has smaller pressure variation
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The Signal and the Noise Introduction Summary "The Signal and the Noise" is a non-fiction book written by Nate Silver that talks about predictions based on probability; particularly focusing on the outcomes of real-world predictions and why they did or did not fail. Published in 2012‚ this book is a commentary on the world of probability made by an ex-statistician. Silver begins this work by effectively emphasizing the relevance of his points by supporting his argument with data applicable
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An LNA combines a low noise figure‚ reasonable gain‚ and stability without oscillation over entire useful frequency range. The Low Noise Amplifier (LNA) always operates in Class A‚ typically at 15-20% of its maximum useful current. Class A is characterized by a bias point more or less at the center of maximum current and voltage capability of the device used‚ and by RF current and voltages that are sufficiently small relative to the bias point that the bias point does not shift. The smallest
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What sounds cause NIHL? NIHL can be caused by a one-time exposure to loud sound as well as by repeated exposure to sounds at various loudness levels over an extended period of time. The loudness of sound is measured in units called decibels. For example‚ normal conversation is approximately 60 decibels‚ the humming of a refrigerator is 40 decibels‚ and heavy city traffic noise can be 85 decibels. Examples of sources of loud noises that cause NIHL are motorcycles‚ firecrackers‚ and firearms‚ all
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The Effects of Population Density and Noise Paper Psy/460 The Effects of Population Density and Noise Paper Introduction There are quite a few people who believe that territoriality‚ privacy‚ and personal space mean the same thing‚ but that is not the case. As noted in this paper‚ they are completely different things. The author of this paper will describe the concepts of territoriality‚ privacy‚ and personal space; examine how these concepts have become increasingly important as populations
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2.1. Definitions of Noise Pollution Noise in generally can be defined as unwanted sound. Noise has many definitions depending on the sources of the sound and the effect to the recipients. (Zulkepli & Hazel‚ 2000). Noise is sound that can create an undesired physiological or psychological effect in a person‚ that may interfere with social between a person and group which include communication‚ work‚ rest‚ recreation‚ and sleep. (Davis & Cornwell‚ 2013). The word noise is suitable to define as unwanted
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Report of assessment of Noise Pollution survey in Kolkata during Kali puja & Diwali Festivals- 2005 Introduction: The use of loudspeakers is regulated in terms of the Rules under the Environment Protection Act (1986) as well as the orders of the Supreme Court and the Calcutta High Court. The Police is empowered to enforce these rules and the orders. While the legal restrictions are mostly known by and large‚ special vigilance becomes necessary during festivals such as the Durga Puja‚ Kali Puja &
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Causes And Effects Of Noise Pollution Noise can be defined as an unwanted or undesired sound. Decibel is the standard unit for measurement of sound. Usually 80 db is the level at which sound becomes physically painful. And can be termed as noise. Humans‚ animals‚ plants and even inert objects like buildings and bridges have been victims of the increasing noise pollution caused in the world. Be it human or machine-created‚ noise disrupts the activity and balance of life. While traffic dons the
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Transportation Noise Literature Review Introduction Noise is‚ generally‚ all the unwanted sound‚ which could generate a number of detrimental effects both on human’s physical body and psychology. While certain types of noise could bother you and affect your working and life quality‚ some other types of noise could affect or even harm human’s auditory sense temporarily or permanently. Therefore‚ noise is defined as one of the most serious pollutions all over the world and how to address it has
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Sound Noise Records 2013 Prepared by Brandon Ernest EXECUTIVE SUMMARY Mission Statement Sound Noise‚ a State of Indiana “S” Corporation‚ spotlights unconventional music‚ merchandise and entertainment typically overshadowed by mainstream ideologies. It speaks to the shared experiences of Generation Y and The Urban Trendsetter. It provides fair compensation to its employees‚ a fair return to its owners‚ and a fair royalty to its artists. Goals * Establish and grow The Company into a
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