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- Genre: Masters Thesis
- Creators: Arizona State University
- Creators: Chakraborty, Bijeta
- Member of: ASU Electronic Theses and Dissertations
Description
Educed Play is a performance installation that investigates spontaneity and the invisible communication that can exist in improvisation and collaborative play. The work unites the mediums of dance, drawing, music, and video through improvisational performances. The multimedia installation entitled Educed Play was presented in the fall of 2012. Inspiration came from the idea of relics created by ephemeral interactions, using improvisation as a means to performance, and working within a genuine collaboration. This document encompasses an overview of the project.
ContributorsLing, Amanda (Author) / Kaplan, Robert (Thesis advisor) / Standley, Eileen (Committee member) / Pittsley, Janice (Committee member) / Arizona State University (Publisher)
Created2013
Description
Efficiency of components is an ever increasing area of importance to portable applications, where a finite battery means finite operating time. Higher efficiency devices need to be designed that don't compromise on the performance that the consumer has come to expect. Class D amplifiers deliver on the goal of increased efficiency, but at the cost of distortion. Class AB amplifiers have low efficiency, but high linearity. By modulating the supply voltage of a Class AB amplifier to make a Class H amplifier, the efficiency can increase while still maintaining the Class AB level of linearity. A 92dB Power Supply Rejection Ratio (PSRR) Class AB amplifier and a Class H amplifier were designed in a 0.24um process for portable audio applications. Using a multiphase buck converter increased the efficiency of the Class H amplifier while still maintaining a fast response time to respond to audio frequencies. The Class H amplifier had an efficiency above the Class AB amplifier by 5-7% from 5-30mW of output power without affecting the total harmonic distortion (THD) at the design specifications. The Class H amplifier design met all design specifications and showed performance comparable to the designed Class AB amplifier across 1kHz-20kHz and 0.01mW-30mW. The Class H design was able to output 30mW into 16Ohms without any increase in THD. This design shows that Class H amplifiers merit more research into their potential for increasing efficiency of audio amplifiers and that even simple designs can give significant increases in efficiency without compromising linearity.
ContributorsPeterson, Cory (Author) / Bakkaloglu, Bertan (Thesis advisor) / Barnaby, Hugh (Committee member) / Kiaei, Sayfe (Committee member) / Arizona State University (Publisher)
Created2013
Description
I am interested in performance that includes multiple artistic media. I am looking for a way to communicate with other artists that can clearly express the meaning of an artistic gesture that they can interpret for their medium. I wish to make transmedia performance art with a meaning that is clear to an audience. That meaning can be abstract. Sometimes we call art "abstract" to imply that it has no perceivable meaning. However, everything has meaning. Even if a piece of art does not have narrative meaning, we can still perceive a structure. That is thanks to our imagination. Imagination is our way of making sense of our experience. I believe that if I can identify some of the imaginative structures through which I perceive and understand my own work, I can use those structures to annotate or organize scores for improvised performance pieces. I am interested in how we understand art. One theory of understanding, which comes from Mark Johnson, involves "image schemata." Image schemata (sing. schema) are basic, abstract structures that we develop based on what we perceive from our physical interactions with the environment. We project these structures that come from a physical domain onto the mental domain. Johnson calls this process "metaphorical projection," and he calls our ability to do this "imagination." By metaphorically projecting image schemata from one domain to another, we form meaning of our experiences, and thus contribute to our understanding of the world. I believe that I can use image schemata to explain the meanings inherent in the art I make and to explain the connections in meaning between one artistic medium to another. I wish to apply this in a transmedia performance setting. First, I will analyze previous transmedia works in terms of image schemata. Second, I will make a score using image schemata for an improvised performance. Third, I will reflect on the results of attempting to rehearse that score.
ContributorsLevy, Luis Alejandro (Author) / Hackbarth, Glenn (Committee member) / Ingalls, Todd (Committee member) / Ziegler, Christian (Committee member) / Arizona State University (Publisher)
Created2014
Description
This study intended to identify what children's perceptions and experiences are with contact improvisation and how these experiences relate to their education; their understanding of being an individual within a community; and their physical, social, and intellectual development. An interpretive phenomenological research model was used, because this study aimed to understand and interpret the children's experience with contact improvisation in order to find meaning relating to the form's possible benefits. The research was conducted over the course of ten weeks, which included classes, interviews, discussions, questionnaires, and journals. This study showed that contact improvisation empowered the children, opened the children's awareness, developed critical thinking, and created a deeper understanding and trust of the self and relationships formed within the class. The experiences found through teaching contact improvisation to these children showed that there are benefits to teaching children the form.
ContributorsCrissman, Angel (Author) / Schupp, Karen (Thesis advisor) / Dyer, Becky (Committee member) / O'Donnell, Timothy (Committee member) / Arizona State University (Publisher)
Created2014
Description
Class D Amplifiers are widely used in portable systems such as mobile phones to achieve high efficiency. The demands of portable electronics for low power consumption to extend battery life and reduce heat dissipation mandate efficient, high-performance audio amplifiers. The high efficiency of Class D amplifiers (CDAs) makes them particularly attractive for portable applications. The Digital class D amplifier is an interesting solution to increase the efficiency of embedded systems. However, this solution is not good enough in terms of PWM stage linearity and power supply rejection. An efficient control is needed to correct the error sources in order to get a high fidelity sound quality in the whole audio range of frequencies. A fundamental analysis on various error sources due to non idealities in the power stage have been discussed here with key focus on Power supply perturbations driving the Power stage of a Class D Audio Amplifier. Two types of closed loop Digital Class D architecture for PSRR improvement have been proposed and modeled. Double sided uniform sampling modulation has been used. One of the architecture uses feedback around the power stage and the second architecture uses feedback into digital domain. Simulation & experimental results confirm that the closed loop PSRR & PS-IMD improve by around 30-40 dB and 25 dB respectively.
ContributorsChakraborty, Bijeta (Author) / Bakkaloglu, Bertan (Thesis advisor) / Garrity, Douglas (Committee member) / Ozev, Sule (Committee member) / Arizona State University (Publisher)
Created2012
Description
“Mierda.” was an original 50-minute solo dance and theater performance by Jordan Klitzke along with guest artist Gina Jurek that premiered from September 6-8, 2018 at Arizona State University. The creative tools of sensation, presence, and fantasy were applied in the development of an individualized movement vocabulary focused on the artist’s embodiment of contrasting ideas. That research was then further cultivated into an immersive theatrical collage that stimulated relational thinking and heightened consciousness. “Mierda.” was an example of a contemporary creative process that utilized the languages of dance and theater. The performance was a unique continuation of artistic research undertaken by pioneers in the dance and theater fields such as Danielle Agami, Lloyd Newson, Hofesh Schechter, and Anne Bogart. It was documented and created over a nine-month period including the three final performances. The form and content of “Mierda.” was not predetermined, but emerged throughout the creative process and performance of the work. The resulting narrative demonstrated the revelatory potential of this style of theatrical inquiry. Precise energy, tension and questioning formed an immersive, intimate experience for the viewers and performers and invited the audience to “fill in the blanks” as they connected with the emerging narrative. The final work was a collage of surprising juxtapositions on both the micro-level of individual movements and the macro-level of theatrical structure. Analysis of the work resulted in a critical understanding of the creative tools used along with future proposals for continued research. Not only did the research enlighten and contextualize the practices of an emerging choreographer, it also argued for a new understanding of the value of Dance as a personal practice of reflection and growth.
ContributorsKlitzke, Jordan (Author) / Standley, Eileen (Thesis advisor) / Conder, Carley (Committee member) / Eckard, Bonnie (Committee member) / Arizona State University (Publisher)
Created2018
Description
In this thesis, a digital input class D audio amplifier system which has the ability
to reject the power supply noise and nonlinearly of the output stage is presented. The main digital class D feed-forward path is using the fully-digital sigma-delta PWM open loop topology. Feedback loop is used to suppress the power supply noise and harmonic distortions. The design is using global foundry 0.18um technology.
Based on simulation, the power supply rejection at 200Hz is about -49dB with
81dB dynamic range and -70dB THD+N. The full scale output power can reach as high as 27mW and still keep minimum -68dB THD+N. The system efficiency at full scale is about 82%.
to reject the power supply noise and nonlinearly of the output stage is presented. The main digital class D feed-forward path is using the fully-digital sigma-delta PWM open loop topology. Feedback loop is used to suppress the power supply noise and harmonic distortions. The design is using global foundry 0.18um technology.
Based on simulation, the power supply rejection at 200Hz is about -49dB with
81dB dynamic range and -70dB THD+N. The full scale output power can reach as high as 27mW and still keep minimum -68dB THD+N. The system efficiency at full scale is about 82%.
ContributorsBai, Jing (Author) / Bakkaloglu, Bertan (Thesis advisor) / Arizona State University (Publisher)
Created2015
Description
"beautiful secrets," a movement art piece engaging the audience in the art-making, exists in the in-between, an indeterminable place, fluid like the water of Kiwanis Lake. The performers sang, danced and built an architectural environment with the help of the audience to create a transformational place betwixt here and there, day and night, death and life; an in-between land where the language is mystical and symbolic, and the water of Kiwanis Lake served as a symbol of transformation. Beneath the art was a method called Somatic Yoga Dance in which the performers trained in preparation for the performance. Below the method was a blessing in which beautiful secrets took root --- a prayer for peace.
ContributorsGarner, Jamey (Author) / Jackson, Naomi (Thesis advisor) / Kaplan, Rob (Committee member) / Bowditch, Rachel (Committee member) / Arizona State University (Publisher)
Created2017