Decibel

Global climate change has been defines as “a change in global or regional climate patterns, in particular a change apparent from the mid to late 20th century onwards and attributed largely to the increased levels of atmospheric carbon dioxide produced by the use of fossil fuels.” (google definition, 2015) Global warming is the increase of the Earth’s surface temperature caused by increased levels of carbon dioxide, CFCs, and other pollutants. The Earth is getting warmer because people are adding…

Just as cell phones today have the capability of sending text messages to one another, so do standard household phones. With this text messaging available, the hearing impaired can communicate just as any other. Technology has made it capable to transmit not just the spoken word, but also the written word through telephone lines. Now that television shows and movies are equipped with the technology to include closed captioning, the hearing-impaired can view them. Listening devices can now be…

strongest sound heard by them (such as the launching of a missile, or an explosion). The size of such difference is measured by the range of the oscillations of pressure. For this reason, the pressure level of sound is calculated logarithmically and in decibels, which is in good accordance with the human hearing system. In 1946, the WHO (World Health Organization) was created. The duty of this Organization was, for the people around the globe, to achieve a fairly ideal level of physical,…

our ear buds in and that noise can affect our ear causing temporary or permanent damage to our ear drum. It doesn’t always have to be music or stereos to affect us also. It can also be a car horn, a jet flying by or by any sound exceeding above 85 decibels. It mostly depends on how long and how often you are exposed to them and whether you wear hearing protection, such as earplugs or earmuffs. Another example of invisible pollution is cell phones. The effect of mobile phone radiation on human…

your inquiry about a hearing conservation program for your company. I’ve provided an outline of a hearing conservation program with OSHA guidelines and costs for you to consider. To clarify some of your questions, the abbreviation of dB stands for decibels, which is how acoustic power is measured. Since the human ear can’t hear all the sounds that may be measured by a sound level meter or dosimeter, we will often add weighting, called A-weighting, to relate the results more accurately to the…

roll-off represents as the gradient of the graph line [12]. The characteristic of filters can be determined by roll-off of the gain. For ideal filters, the gradual roll-off of the gain is from 1 to 0 [18]. Generally, the roll-off is measured in units of decibels (dB) on a logarithmic scale. Quality factor 'Q' The quality factor is a measure of the selectivity of the circuit. Higher the value of Q, the more selective the circuit but narrower the bandwidth. The quality factor is inversely…

INTRODUCTION Flexi-Coil Ltd., a division of CNH Global, is Canada's largest farm implement manufacturer and has become a key employer in the Saskatoon area since its establishment in 1952 by the farming brothers Emerson and Kenneth Summach. [1,2] In 1997, Flexi-Coil sold 35% of its market shares to New Holland Agriculture. In 1999, New Holland became a brand of CNH Global. [3] Later, in the same year, CNH Global completed the purchase of the global Flexi-Coil business. [2] In 2013, CNH…

in the environment and so adapted. What is interesting is that, what I heard in heavy metal was nothing more that the blues that had been amplified and I called it amplified blues. My thought was that lack of passion and skill was replaced by decibels it is hard to hear errors on an electric guitar. Let’s look at Led Zeppelin who took the killing floor from Howling Wolf “Ultimately, I wanted Zeppelin to be a marriage of blues, hard rock and acoustic music,” guitarist Jimmy Page once…

Capitalism: Freedom of choice and individuals incentive for workers, investors, consumers, and business enterprises are emphasized. Communism/Marxism: Central government directs all major economic decisions. Socialism: Government owns the basic means of production, determines the use of resources and provides social services. Federalism: National and state governments divided in power Anti-Federalism: Against the Constitution in 1789 and having a strong U.S Federal government Part II-The…

As one component in the job design, the management of the company needs to implement an ergonomics factor to build a good interface between human and machine. Refer to Heizer and Render (2006), Ergonomics means “the study of work”. And the basic reason of the ergonomics study is come from an understanding that the male and female employee come in limited configuration. Therefore, design of tools and the workplace depends on study of people to determine what they can and cannot do. And the…