machines cause a lot of noise pollution. Airplanes‚ .. Main causes of noise pollution: Noise is a problem chiefly of the urban area. Loud noise is considered as pollutant. High frequency loud sound‚ creates various kinds of physical and mental problems. The unit of measurement of sound is decibel (dB). Any sound above‚ 80 decibel harms the ciliary cells situate.. Sources of Noise pollution explained below: Domestic gadgets : Mixers‚ pressure cookers‚ washing machines‚ desert coolers‚ generators (as
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most children are uneasy—to find themselves apart from their families in the first institution of their lives. But I was astonished. The nun said‚ in a friendly but oddly impersonal voice‚ ’Boys and girls‚ this is Richard Rodriguez.’ (I heard her sound out: Rich-heard Road-ree-guess.) It was the first time I had heard anyone name me in English. ’Richard‚’ the nun repeated more slowly‚ writing my name down in her black leather book. Quickly I turned to see my mother’s face dissolve in a watery blur
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involves the reinforcement of desirable sound and the control of undesirable noise. A room’s acoustic is depending on its shape‚ form‚ volume and the nature of its surfaces Room form -Parallel surfaces reflect sound back and forth across a surface -Parallel surface may cause excessive reverberation and undesirable echoes or flutter -Concave surfaces-focus sound -create undesirable hot spot of sound -convex surfaces-diffuse sound -desirable
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Some people say vinyl long play records (LPs) have a warmer‚ more honest sound‚ others’ believe the sound of compact discs (CDs) are clear and more precise; a number of factors besides sound characteristics effect both LPs and CDs‚ the debate about which format dominates has been going on within the disc jockey (DJ) community for over 20 years. Four strong factors in this debate include: portability‚ storage capacity‚ sound characteristics‚ and fidelity; all which help the user decide which format
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purpose of this lab was to determine the frequencies of the sound produced by a tuning fork. This was accomplished by inducing resonance using a tube of adjustable length. Theoretical Background In practice‚ sound is heard if a tuning fork is set to vibrate. Typically‚ the sound comprises one or more frequencies. Notably‚ resonance may occur between the surface and the tuning fork in case sound is reflected from the surface. In essence‚ the sound is used to detect resonance. In addition‚ the difference
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READING QUESTIONS DAY ANSWERS 1. Which of the following reading components do you find the easiest and the most difficult? Vocabulary Sentence/Syntax Getting the main idea Comprehension Others:_______________ Easiest: _____________ Difficult: _______________ EASIEST COMPONENTS: Vocabulary - 3 Sentence/Syntax - 11 Getting the main idea - 16 Comprehension - 1 DIFFICULT COMPONENTS: Vocabulary - 5 Sentence/Syntax - 9 Getting the main idea - 5 Comprehension – 11 2. Why do you
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Goals and never-ending ambitions. Sound waves travel into different organism’s ear canals but what happens when sounds are interrupted by dense walls or by a simple thin bag? Many factors can prevent multiple screams and shouts to effectively alarm and demand assistance‚ but in many cases‚ the sounds are successfully concealed as the perpetrator accomplishes their malevolent actions. Reality can cause a grown man to tremble at the sight of death and violence just like how a child begins to tremble
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the flute‚ violin‚ piano‚ and oboe. The Fourier Series can be used to explain why each of the instruments have their own unique sound. The flute‚ violin‚ piano and oboe have different combinations of frequencies as each waveform is made of an unique combination of sine and cosine waves‚ and this creates distinct waveforms and allows each instrument to have a unique sound. Recall that the formula of the Fourier Series is f(x)=a_0+∑_(k=1)^∞▒(a_k cos〖πkx/T〗+b_k sin〖πkx/T〗 ) The Fourier Series is
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One philosophy that some persons question‚ including a few of our own aviation medical examiners‚ relates to our greater flexibility in granting special issuances to private pilots as opposed to air carrier and other commercial pilots. The arguments against such flexibility rotate around the thought that‚ in the event of a medical incapacitation‚ an air carrier or commercial pilot usually has another pilot on board who can take control of the aircraft and safely land. In contrast‚ the private pilot
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Issue People all over the world have sounds that rarely occur that irritate them‚ like nails on a chalk board‚ a fork scraping a plate‚ or car alarms. But sometimes every day sounds that most people barely notice‚ other people really notice. Some major examples are sounds like chewing‚ nail tapping‚ swallowing‚ and the clicking of a keyboard. These individuals do not notice these sounds more because they want to; their mind automatically detects the sounds and continues to focus on them. These people
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