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Lossy compression is a form of compression that slightly degrades a signal in ways that are ideally not detectable to the human ear. This is opposite to lossless compression, in which the sample is not degraded at all. While lossless compression may seem like the best option, lossy compression, which is used in most audio and video, reduces transmission time and results in much smaller file sizes. However, this compression can affect quality if it goes too far. The more compression there is on a waveform, the more degradation there is, and once a file is lossy compressed, this process is not reversible. This project will observe the degradation of an audio signal after the application of Singular Value Decomposition compression, a lossy compression that eliminates singular values from a signal’s matrix.
ContributorsHirte, Amanda (Author) / Kosut, Oliver (Thesis director) / Bliss, Daniel (Committee member) / Electrical Engineering Program (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description
The world of a hearing impaired person is much different than that of somebody capable of discerning different frequencies and magnitudes of sound waves via their ears. This is especially true when hearing impaired people play video games. In most video games, surround sound is fed through some sort of digital output to headphones or speakers. Based on this information, the gamer can discern where a particular stimulus is coming from and whether or not that is a threat to their wellbeing within the virtual world. People with reliable hearing have a distinct advantage over hearing impaired people in the fact that they can gather information not just from what is in front of them, but from every angle relative to the way they're facing. The purpose of this project was to find a way to even the playing field, so that a person hard of hearing could also receive the sensory feedback that any other person would get while playing video games To do this, visual surround sound was created. This is a system that takes a surround sound input, and illuminates LEDs around the periphery of glasses based on the direction, frequency and amplitude of the audio wave. This provides the user with crucial information on the whereabouts of different elements within the game. In this paper, the research and development of Visual Surround Sound is discussed along with its viability in regards to a deaf person's ability to learn the technology, and decipher the visual cues.
ContributorsKadi, Danyal (Co-author) / Burrell, Nathaneal (Co-author) / Butler, Kristi (Co-author) / Wright, Gavin (Co-author) / Kosut, Oliver (Thesis director) / Bliss, Daniel (Committee member) / Barrett, The Honors College (Contributor) / Electrical Engineering Program (Contributor)
Created2015-05
Description
The title means nothing because the stories have little in common, aside from the fact that I wrote them. The common theme of anxiety was unintentional, though it is prevalent in the stories, poetry and my life. Each story is written from a different style, with a different interest in mind. The poetry that breaks up the stories is mine, and also free of common bonds. People whom I love inspired some of them; others stem from people with whom I was (or still am) angry. Some of them are just me trying to write poetry like other successful poets, who seem to know something I don't. I wrote this set of stories and poems because I wanted to see if I could do it. I wanted to challenge myself in a new medium (two new mediums really, if you separate literature and poetry). I wanted to prove to myself that I could do it, if I really set my mind to it. I wanted to have some wealth of words, which I could record myself reading. Overall, I hope that you enjoy these stories and words. I wrote them to entertain myself, and they seem to do that pretty well. If you don't like them, stop reading. If you do like them, keep reading and tell everyone you know about this collection. I'm proud of my work here, so anything beyond that is icing on my cake.
ContributorsRagatz, Zachariah Edward (Author) / Scott, Jason Davids (Thesis director) / Espinosa, Micha (Committee member) / Barrett, The Honors College (Contributor) / School of Mathematical and Statistical Sciences (Contributor) / School of Film, Dance and Theatre (Contributor)
Created2015-05
Description
Life and Sports is a collection of short stories about how sports shape the daily lives and outlooks of four main characters. In "Like Father, Like Son," Carson learns the ins and outs of the game of golf from his father, Frank, but is shocked to learn that his dad won some of his trophies by cheating. Carson has always firmly believed in fair, competitive play \u2014 a lesson he thought he had learned from his father. Now, with a big tournament coming up, Carson is forced to face the unpleasant truth that his father is not the upright idol he had once thought him to be. "Cracked Ice" follows the story of Jamal Booker, a hockey player from the small town of Jackson Wyoming. His father is in jail for armed robbery, so he and his mother are forced to live off her single paycheck. Money is tight, but Jamal's battered hockey equipment is no reflection of his skill, as scouts come from all over to observe his Wayne Gretzky-like skating ability. When he takes a bad hit in a game, Jamal realizes he has to choose between his passion for hockey and his health and family. "Troubled Past" is a story about a boy whose love of baseball is all that remains after the loss of his father. When that love is tested, Johnny turns to his mother for comfort and realizes that she might present just as real of a connection to his father as the game they loved, that is if the story she is telling can be trusted. In "Dribbling Between the Cones," star player Zach Farmer learns the hard way the importance of being a team player. He may be the star of the team, but the star has to shine in a way that makes his whole team brighter.
ContributorsPritchard, Casey (Author) / Barrett, The Honors College (Contributor)
Created2003-05
Description
The purpose of the solar powered quadcopter is to join together the growing technologies of photovoltaics and quadcopters, creating a single unified device where the technologies harmonize to produce a new product with abilities beyond those of a traditional battery powered drone. Specifically, the goal is to take the battery-only flight time of a quadcopter loaded with a solar array and increase that flight time by 33% with additional power provided by solar cells. The major concepts explored throughout this project are quadcopter functionality and capability and solar cell power production. In order to combine these technologies, the solar power and quadcopter components were developed and analyzed individually before connecting the solar array to the quadcopter circuit and testing the design as a whole. Several solar copter models were initially developed, resulting in multiple unique quadcopter and solar cell array designs which underwent preliminary testing before settling on a finalized design which proved to be the most effective and underwent final timed flight tests. Results of these tests are showing that the technologies complement each other as anticipated and highlight promising results for future development in this area, in particular the development of a drone running on solar power alone. Applications for a product such as this are very promising in many fields, including the industries of power, defense, consumer goods and services, entertainment, marketing, and medical. Also, becoming a more popular device for UAV hobbyists, such developments would be very appealing for leisure flying and personal photography purposes as well.
ContributorsMartin, Heather Catrina (Author) / Bowden, Stuart (Thesis director) / Aberle, James (Committee member) / Electrical Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2015-12
Description
Every engineer is responsible for completing a capstone project as a culmination of accredited university learning to demonstrate technical knowledge and enhance interpersonal skills, like teamwork, communication, time management, and problem solving. This project, with three or four engineers working together in a group, emphasizes not only the importance of technical skills acquired through laboratory procedures and coursework, but the significance of soft skills as one transitions from a university to a professional workplace; it also enhances the understanding of an engineer's obligation to ethically improve society by harnessing technical knowledge to bring about change. The CC2541 Smart SensorTag is a device manufactured by Texas Instruments that focuses on the use of wireless sensors to create low energy applications, or apps; it is equipped with Bluetooth Smart, which enables it to communicate wirelessly with similar devices like smart phones and computers, assisting greatly in app development. The device contains six built-in sensors, which can be utilized to track and log personal data in real-time; these sensors include a gyroscope, accelerometer, humidifier, thermometer, barometer, and magnetometer. By combining the data obtained through the sensors with the ability to communicate wirelessly, the SensorTag can be used to develop apps in multiple fields, including fitness, recreation, health, safety, and more. Team SensorTag chose to focus on health and safety issues to complete its capstone project, creating applications intended for use by senior citizens who live alone or in assisted care homes. Using the SensorTag's ability to track multiple local variables, the team worked to collect data that verified the accuracy and quality of the sensors through repeated experimental trials. Once the sensors were tested, the team developed applications accessible via smart phones or computers to trigger an alarm and send an alert via vibration, e-mail, or Tweet if the SensorTag detects a fall. The fall detection service utilizes the accelerometer and gyroscope sensors with the hope that such a system will prevent severe injuries among the elderly, allow them to function more independently, and improve their quality of life, which is the obligation of engineers to better through their work.
ContributorsMartin, Katherine Julia (Author) / Thornton, Trevor (Thesis director) / Goryll, Michael (Committee member) / Electrical Engineering Program (Contributor) / School of Film, Dance and Theatre (Contributor) / Barrett, The Honors College (Contributor)
Created2015-12
Description
For this project, I have written a trilogy of interrelated short stories. The three stories are entitled "The Blue Bike," "Heartbeat," and "Elevators." Each of these three stories relate to each other both through the featured characters and the core themes. The little girl from the first story, Amy, is the little sister of the narrator Emma from the second story. The narrator from the third story is the son of Charles (Helen's husband) from the first story, who is also a major character in "Elevators." The gym in the second story also appears in the third story. On a thematic and poetic level, I have used the word "lift" as the inspiration behind and connecting thread between my stories. I have played with the various meanings of connotations of the word, using them to construct the plots of each story. For example, I have used it in the sense of face lifts in the first story, as well as alluded to the idea of planes lifting into the air through making Charles a pilot. There is also the idea of lifting a child into your arms, and lifting yourself or someone else up both physically and emotionally. In the second story, I use shop-lifting, weight-lifting, and the idea of giving someone a lift as in giving someone a ride. The idea of giving someone a lift also occurs in the last story, alongside the connotations of lift with elevators. There are a multitude of other instances in which I have tried to make the word "lift" resonate throughout these stories, though the over-arching theme for me would be the idea of lifting other people up. It is the exploration of meaningful connections between people and the way those connections can heal and "lift." This collection is thus an exercise in creative interconnectivity as well as an exploration of the way people can connect meaningfully to each other.
ContributorsKang, Verity Grace (Author) / McNally, T. M. (Thesis director) / Duerden, Sarah (Committee member) / Department of English (Contributor) / School of International Letters and Cultures (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
The apparent phenomenon of the human eye retaining images for fractions of a second after the light source has gone is known as Persistence of Vision. While its causes are not fully understood, it can be taken advantage of in order to create illusions which trick the mind into perceiving something which, in actuality, is very different from what the mind portrays. It has motivated many creative engineering technologies in the past and is the core for how we perceive motion in movies and animations. This project applies the persistence of vision concept to a lesser explored medium; the wheel of a moving bicycle. The motion of the wheel, along with intelligent control of discrete LEDs, create vibrant illusions of solid lines and shapes. These shapes make up the image to be displayed on the bike wheel. The rotation of the bike wheel can be compensated for in order to produce a standing image (or images) of the user's choosing. This thesis details how the mechanism for conducting the individual LEDs was created in order to produce a device which is capable of delivering colorful, standing images of the user's choosing.
ContributorsSaltwick, Ian Mark (Author) / Goryll, Michael (Thesis director) / Kozicki, Michael (Committee member) / Electrical Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
There are no words for the trauma of death when it strikes unexpectedly. What to say when a mother dies in childbirth? When a father figure contracts an unknown disease for no apparent cause? When a beloved pet, long mourned, may still be alive and hidden by estranged family? Generations may pass, and children may grow up, but the pain leaves marks that echo across time and the other borders we construct between our past and present. We may find strength on solitude, or prayer, or the words of a song written by someone else. In these four stories, spanning almost half a century, the marks of death and attempts to soothe or hide them are everywhere. Children on the cusp of adulthood grapple with the lives and the lies of their parents. Musicians examine the relationship of their music to the world. Legends and myths lurk in the shadows, tempting with false hope and rationalizing the unexplainable.
In “Playing the Changes,” we meet two men stranded in a small desert town in 1972, a time when their attraction to each other is still dangerous. Nile Walker is a jazz musician, running from a spurned lover and the law. Benji Garza is a once-devout Catholic, fixing cars and caring for his orphaned nephew, Hector. Walker and Garza’s affair will spin both lives and their heredity into sweeping tragedies that characters battle with lust and melody. Walker has a son he never meets, a drifter who finds connection with another lost soul at an airport in “La Petite Mort.” Hector is forced into early adulthood in “The Words,” when his ailing uncle’s health fails due to a mysterious disease not yet called AIDS. Later Tre—a young man struggling with the weight of his own lineage—meets him in “PHX.” These stories examine questions of death’s causes and its myriad effects, and offer this solution: Knowing that we cannot know everything, and living, loving, and singing anyway.
In “Playing the Changes,” we meet two men stranded in a small desert town in 1972, a time when their attraction to each other is still dangerous. Nile Walker is a jazz musician, running from a spurned lover and the law. Benji Garza is a once-devout Catholic, fixing cars and caring for his orphaned nephew, Hector. Walker and Garza’s affair will spin both lives and their heredity into sweeping tragedies that characters battle with lust and melody. Walker has a son he never meets, a drifter who finds connection with another lost soul at an airport in “La Petite Mort.” Hector is forced into early adulthood in “The Words,” when his ailing uncle’s health fails due to a mysterious disease not yet called AIDS. Later Tre—a young man struggling with the weight of his own lineage—meets him in “PHX.” These stories examine questions of death’s causes and its myriad effects, and offer this solution: Knowing that we cannot know everything, and living, loving, and singing anyway.
ContributorsCohen, Michael Lawrence (Author) / Bell, Matt (Thesis director) / Pearson, Dustin (Committee member) / Department of English (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
This project was centered around designing a processor model (using the C programming language) based on the Coldfire computer architecture that will run on third party software known as Open Virtual Platforms. The end goal is to have a fully functional processor that can run Coldfire instructions and utilize peripheral devices in the same way as the hardware used in the embedded systems lab at ASU. This project would cut down the substantial amount of time students spend commuting to the lab. Having the processor directly at their disposal would also encourage them to spend more time outside of class learning the hardware and familiarizing themselves with development on an embedded micro-controller. The model will be accurate, fast and reliable. These aspects will be achieved through rigorous unit testing and use of the OVP platform which provides instruction accurate simulations at hundreds of MIPS (million instructions per second) for the specified model. The end product was able to accurately simulate a subset of the Coldfire instructions at very high rates.
ContributorsDunning, David Connor (Author) / Burger, Kevin (Thesis director) / Meuth, Ryan (Committee member) / Barrett, The Honors College (Contributor) / Computer Science and Engineering Program (Contributor)
Created2014-12