One of the major problems that society faces today is noise pollution. Everywhere people go there is always something that is making a sound. It can be very loud such as a plane flying overhead, or it could be quiet like the fan of a computer. When a person is exposed to certain noises for extended periods of time it can not only damage their hearing, but also effect their mood, energy level, and productivity. As a result, there has been a push in the last fifty years or so to silence some of the annoying sounds that assault people’s ears everyday. While it might seem as simple as covering ones ears, the scientific community has been applying their knowledge in the hope of creating a more peaceful world.
All waves, whether it’s a wave in water or an acoustic wave, are made up of specific parts. They all have crests, highpoints, and troughs, low points. The distance between two of these crests or troughs is called the wavelength. The height of a crest is the amplitude, and the number of crests that pass a point in one second is the frequency. When two waves encounter each other they pass through one another, and the amplitudes of the waves combine. This is called interference. The first type of interference is called constructive interference. This is when two waves combine to form a wave that is larger than each individual wave. The second type of interference is when two waves combine to form a wave that is smaller than the original two. This is called destructive interference. If the two waves are identical in every aspect except that they are 180 degrees out of phase from one another, then the two waves will combine to form a wave that has been completely counterbalanced, where the amplitude is zero. In addition...
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Although whale watching is spectacular to watch lets go more in-depth with the affects sonar has on the environment. Sound Navigation and Ranging has a warrant out for whales and has accounted for more than
Silence — the sound of quiet, the state of mind, the lack of meaning — all these pertain to its definition. Communication is expanding, noise is increasing, music is becoming more obtainable as people search desperately for a moment of peace or a breeze of silence. As the scarcity of physical silence increases, its value as a rare commodity increases as well. The idiom “Silence is golden” may perhaps only grow closer to reality as time passes, as exemplified by the white noise machines or silent fans entering the market and fictionalized in Kevin Brockmeier’s short story, “The Year of Silence.” In light of this, Brockmeier explores the value of silence and noise in his story without putting one above the other. Through strange clues and hidden
Throughout our day to day lives we are exposed to many sounds such as the sound of traffic, coversation, TV, nature and music. More often than not these sounds that we experience are at a low safe level, levels that will not affect or harm our hearing. Unfortunatley when we are exposed to sound levels that are too high or loud sounds over a long period of time there is a chance that the delicate inner workings of the ear can be permanatly damaged. This is known as noise induced hearing loss (NIHL)
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Noise is ubiquitous in our environment. (Pediatrics , 1997) It is undesirable sound, unwanted sound. Sound is what we hear. It is vibration in a medium, usually air. Sound has intensity, frequency and duration. The ability to hear sounds at certain frequencies is more readily lost in response to noise. (Pediatrics , 1997). The further you are from sound the less effect you hear it but the more closer you are to sound the louder it is.
Three coordinate systems are utilized when attempting to locate a specific sound. The azimuth coordinate determines if a sound is located to the left or the right of a listener. The elevation coordinate differentiates between sounds that are up or down relative to the listener. Finally, the distance coordinate determines how far away a sound is from the receiver (Goldstine, 2002). Different aspects of the coordinate systems are also essential to sound localization. For example, when identifying the azimuth in a sound, three acoustic cues are used: spectral cues, interaural time differences (ITD), and interaural level differences (ILD) (Lorenzi, Gatehouse, & Lever, 1999). When dealing with sound localizaton, spectral cues are teh distribution of frequencies reaching teh ear. Brungart and Durlach (1999) (as seen in Shinn-Cunning, Santarelli, & Kopco, 1999) believed that as the ...
The vibration of the strings of a guitar causes the sound wave, but is not actually what you are hearing. The amplification of the sound wave is what is actually heard. The differences in the tension of the stings and the mass of the strings affect the pitch of the sound produced. The ends of each string are nodes, or where the wave does not travel from its initial position. The note you hear from the string is actually the first harmonic of the wave; other harmonics created when plucking a string form the undertones and overtones of a note. The waves on a guitar string are transverse waves, meaning they travel perpendicular to the original position. The waves are also standing waves, because they remain in the same position.
The noise of Aircrafts was historically a major environmental issue for the airline. It is still high on the agenda of public concern. Noise disturbance has a variety of difficult issues to assess because it is open for self- reactions. Its impact is not one permanently on the actual environment, but it can have many effects on the people living in the area of the airport, including: interference in c...
There are a few parts of sounds waves that we should be familiar with to better be able to understand the physics of music. The crest is the highest point of a wave, while the trough is the lowest. The wavelength of a wave is the distance between two adjacent ...
vociferous noises are offensive and punishable by law. The law is called noise pollution. The
Along with vision, hearing is one of the most important senses that humans have. We use it to communicate, learn, and stay aware of our environment. In fact, hearing is the only sense that never stops receiving sensory input. While all of our other senses become drastically less sensitive when we are sleeping, our brain still processes auditory information to awaken us the second something is wrong. Although this may have been more practically used before people slept safely in homes, it’s still useful for hearing a fire alarm or our alarm clock in the morning. We are able to hear by processing sound waves. This energy travels through the delicate structures in our ears to be transformed into neural activity so that we can perceive the sensory information we receive (Myers, 2010).
Living in the curse of pollution, where everyday our life is at the mayhem of polluted air, loud sound, honking, here is a person who for the last 28 years fights against the noise-makers of the street. The 52-year-old Kolkata businessman Kailash Mohta started his initiative in 1989 to make people aware about the effects of honking. However, this crusader started his
From Kiss screaming “I Love it Loud, I wanna hear it loud,” to the Black Eyed Peas belting out “play it loud, baby play it loud,” loud music has spanned generations. For most people it is always been seen simply as fun entertainment. However as time goes on it is becoming more and more obvious just how dangerous “playing it loud” actually is. Musicians, music venue workers, DJs, and now even people listening to a personal music players, such as an iPod are in danger. Since music is such a large part of American culture, our society should educate those at risk on music-induced hearing loss so that music can continue to be enjoyed throughout life. Listening to loud music for an extended amount of time presents the risk of music-induced hearing loss or the loss of sensitivity to sound because of overexposure to loud music. With music overexposure and music-induced hearing loss it is important to realize the risks for musicians, other people in the music business, and people listening to portable music players (PMPs) and start looking for ways to protect and prevent music-induced hearing loss.
What distinguishes sound waves from most other waves is that humans easily can perceive the frequency and amplitude of the wave. The frequency governs the pitch of the note produced, while the amplitude relates to the sound le...