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    Acoustics

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    consideration of the architect at construction time, the patrons would not feel that they were getting their money's 'worth.' The architect is tapping into the world of acoustics; in this case, achieving the best possible sonic experience through differing techniques : different materials, certain shapes of rooms, sound traps, etcetera. Acoustics and sound, like so many physics branches, starts out relatively simple and quickly becomes a gigantic headache. Massive amounts of planning must go into a large

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    Acoustics in Music

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    Acoustics in Music Through out the history of music, acoustics have played a major role. After all if it were not for acoustics the quality of sound that we know today would not exist. The word acoustics comes from the Greek word akouein, which means, “to hear”(Encarta Encyclopedia). Since music has to be heard in most cases for enjoyment, acoustics obviously take on a very important role in the pleasure that music brings to the ear. Acoustical architecture and design are two key elements in

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    Flute Acoustics

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    A flute blows a rapid jet of air across the embouchure hole. The pressure inside the players mouth is above atmospheric (usually 1kpa: just enough to support a 10cm height difference in a water manometer). (http://newt.phys.unsw.edu.au/music/) The work done to accelerate the air in this jet is the source of power input to instrument. Sound requires an oscillating motion or air flow. In the flute, the air jet, and the resonance in the air in instrument produces an oscillating component of the

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    Acoustic Waves in Physics An acoustic wave can simply be described as a longitudinal wave. A longitudinal wave is a wave that vibrates and moves in the direction of its propagation. This means the medium is either in the same or opposite direction of the way the wave travels. Acoustic waves are a form of Mechanical longitudinal waves; these waves are otherwise known as compression waves or compressional waves. Compressional waves obviously produce compression, decompression, and rarefaction to

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    Underwater Acoustics

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    My Communications coursework will be on non-radio communications. My chosen topic is underwater acoustics. The applications of underwater acoustics and their advantages and disadvantages will be studied. All forms of non-radio communications are based on waves. Waves are generally a disturbance in a surface, transferring energy from A to B. Waves can be mechanical vibrations travel through a medium. For example: water, sound. These waves are called mechanical waves. Progressive waves are

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    Acoustic levitation to help Medicines Unless you travel into the vacuum of space, sound is all around you every day.. You hear sounds; you don't touch them. But as the vibrations that sound creates in other objects. The idea that something so intangible can lift objects can seem unbelievable, but it's a real phenomenon. Acoustic levitation takes advantage of the properties of sound to cause solids,and liquids to float. The process can take place in normal or reduced gravity. To understand how acoustic

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    The Effect of Underwater Acoustics on Whales

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    The Effect of Underwater Acoustics on Whales Whales utilize acoustic frequencies to communicate underwater. If the whales are unable to communicate their bi-annual migration can become perilous. Man-made low frequency sonarcan prevent whales from producing soundand sometimes causes them to take alternate routes. When the whales try to avoid the sonar they are in danger of running ashore and perishing after being beached. Introduction: Twice a year, around the months of December and

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    Careers in Acoustic and Audio Equipment Design Audio engineers have an interesting combination of character traits. On the one hand they tend to love music and want to have a hand in creating it. On the other hand they are also lovers of technology and ‘cool gear’. Along with an interest in technology usually comes an interest in understanding how it works – a desire to master the technology. With some people also comes a desire to go beyond the latest gear and ‘do it better’. They have a

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    Physics of an Acoustic Guitar

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    Physics of an Acoustic Guitar I have been watching my husband play the guitar in a band for five years and he has made it look so easy to make such beautiful music. Most guitar players have progressed with the technology of electric guitars, but when my husband picks up an acoustic guitar and starts to play a song for just me, I hear his love for me in the sounds that he produces. Imagine my surprise when a physics class conveyed to me that there was much more to his playing than I had imagined

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    ATRAC: Adaptive Transform Acoustic Coding for MiniDisc Abstract -------- ATRAC is an audio coding system based on psychoacoustic principles. The input signal is divided into three subbands which are then transformed into the frequency domain using a variable block length. Transform coefficients are grouped into nonuniform bands to reflect the human auditory system, and then quantized on the basis of dynamic sensitivity and masking characteristics. ATRAC compresses compact disc audio

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