<p>    </p> <p>Lam, Luchcha. M.S., Purdue University, May 2023. Believe in the Sound You See: The Effects of Body Type and Voice Pitch on the Perceived Audio-Visual Correspondence and Believability of Virtual Characters. Major Professor: Nicoletta Adamo. </p> <p>We examined the effects of body type and voice pitch of virtual characters’ on perceived audio-visual correspondence and believability. For our within-group study, we developed nine experimental conditions using a 3 (body type: ectomorph vs. mesomorph vs. endo- morph body types) × 3 (voice pitch: low vs. medium vs. high fundamental frequency [F0]). We found significant main effects from voice pitch and significant interaction effects between a character’s body type and voice pitch on both the level of perceived audio-visual correspondence and believability of female and male characters. For female characters, we also observed an additional significant main effect from body type and a significant interac- tion effect between the participant’s biological sex and the character’s voice pitch on both perceived audio-visual correspondence and believability. Moreover, the results show that perceived believability is highly correlated to perceived audio-visual correspondence. Our findings have important practical implications in applications where the character is meant to be an emotional or informational guide that requires some level of believability, as the findings suggest that it is possible to enhance the believability of the characters by generating appropriate voices through pitch manipulation of existing voices. </p>

This study is concerned with providing a strategy for teaching basic art concepts of line and shape at sixth grade level to the disadvantaged child through the use of kits as a supplement to classrooms instruction. Twelve kits were devised. The materials and information necessary to do the assignment were included in each kit. They were tested by disadvantaged sixth graders in a Dallas school for one month. The kits were evaluated using the children's work as compared to control assignments, as well as behavior checklists and frequency of uise counts. The game kits were particularly effective. Kits proved to be a viable strategy for enriching the art curriculum for disadvantaged children and improving classroom discipline.

Магистерская диссертация посвящена сложной и пока мало разработанной теме, связанной с историей и современным развитием звукозаписи как уникального явления культуры России ХХ-ХХI вв., которое требует серьезного культурологического осмысления. Теоретико-методологическая база диссертации содержит широкий круг научных трудов, охватывающих различные области гуманитарного знания (философия, социология, культурология, искусствознание, музыковедение и др.) и создает социокультурный контекст развития звукозаписи как в России, так и в странах Запада, а также выявляет специфику бытования звукозаписи в современной российской культуре. В работе представлен большой эмпирический материал, сделана его систематизация и научная обработка. Новизна диссертации состоит также и в анализе издательского дела, который решается в русле проблем лицензирования, "самиздата" и пиратства, которые характеризуют современное состояние музыкальной индустрии, особенно в сфере массовой культуры. Представленный в диссертации проект "Рекорд-лейбл GATEMOUTH" предлагает пути решения вопросов звукоиздательства в России и в Интернет-пространстве. / The master's thesis is devoted to a complex and so far little developed topic related to the history and modern development of sound recording as a unique phenomenon of Russian culture in the XX-XXI centuries, which requires serious cultural understanding. The theoretical and methodological base of the dissertation contains a wide range of scientific works covering various areas of humanitarian knowledge (philosophy, sociology, cultural studies, art studies, musicology, etc.) and creates a socio-cultural context for the development of sound recording both in Russia and in Western countries, and also reveals the specifics the existence of sound recording in modern Russian culture. The work presents a large empirical material, made its systematization and scientific processing. The novelty of the dissertation also lies in the analysis of publishing, which is solved in line with the problems of licensing, "samizdat" and piracy, which characterize the current state of the music industry, especially in the field of mass culture. The project "GATEMOUTH Record-Label" presented in the dissertation proposes ways of solving the problems of sound production in Russia and in the Internet space.

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The problem undertaken in this investigation is to determine the value of using audio-visual aids in the fifth-grade social studies program of the Austin Elementary School, Wichita Falls, Texas.

La compression de tous les types de signaux audio (parole et audio) constitue un vaste domaine de recherche, car il tente de répondre à de nombreuses et différentes demandes provenant de l’industrie. Actuellement, l’industrie de la téléphonie mobile possède de nombreuses requêtes au niveau de la compression de signaux audio à faible débit (sous les 32 kbit/s). Dans cette plage de débit, deux modèles sont nécessaires pour compresser tous les types de signaux audio : les codecs temporels s’utilisent pour la compression des signaux de parole et les codecs fréquentiels (par transformée) plus généraux s’utilisent pour la compression des signaux audio tels que la musique. Les téléphones intelligents et les tablettes numériques représentent des exemples d’appareils qui doivent intégrer deux codecs différents. Idéalement, ces appareils devraient intégrer un codec unique qui compresse tous les types de signaux audio. Cependant, l’unique moyen actuel d’obtenir un «codec universel» consiste en un «codec hybride universel». Les codecs hybrides universels intègrent au moins deux modèles de codage et un classificateur, qui sélectionne le modèle à exécuter selon le signal à traiter. Ces codecs ne représentent donc pas véritablement des codecs unifiés. De plus, avec l’utilisation d’un classificateur, les codecs hybrides introduisent également la possibilité d’erreurs de classification durant l’analyse. Ces codecs hybrides ont également tendance à être plus complexes puisqu’ils doivent gérer les différents modèles de codage. Après plus de trente ans de recherche, il existe toujours une distinction entre les approches utilisées pour la compression des signaux de parole et celles utilisées pour les signaux audio. Les codecs temporels se basent sur un modèle de production de la parole tandis que les codecs fréquentiels utilisent un modèle de perception auditive pour les signaux audio. Cette thèse propose des contributions dans l’élaboration d’un modèle de codage audio universel et véritablement unifié. Ces contributions se présentent dans cette thèse par un modèle d’analyse-synthèse de type harmonique-plus-bruit pour les signaux de parole qui fonctionne entièrement dans le domaine fréquentiel. Cette thèse démontre qu’il est possible d’obtenir un signal de parole de qualité perceptuelle transparente sans nécessairement suivre l’évolution de la forme d’onde du signal original. De plus, cette thèse propose également une version quantifiée du modèle d’analyse-synthèse et démontre qu’il est possible d’obtenir un signal de synthèse de bonne qualité pour des débits autour de 24 kbit/s et de 30 kbit/s. Lors des tests subjectifs MOS, le modèle se situe dans la même catégorie de qualité que la norme G.722.2 (AMR-WB) de l’institut UIT pour un débit autour de 24 kbit/s. Le modèle possède l’avantage de fonctionner entièrement dans le domaine fréquentiel et démontre ainsi les possibilités d’un codec réellement universel puisque traditionnellement le domaine des fréquences était réservé aux signaux audio autres que les signaux de parole.

Thesis (MSc (Applied mathematics))--University of Stellenbosch, 2011. / Includes bibliography. / Please refer to full text to view abstract.

Through its portfolio of practical case studies and its engagement with critical thinking from a range of disciplines, the PhD investigates the following key question: what are the technical, aesthetic and conceptual impacts of using binaural technology to create a soundscape? ‘Using binaural technology’ implies users and users are essentially at the heart of this impact because users mediate the technical and aesthetic aspects of binaural technology and also inherently shape the theoretical ideology of this technology. By analysing users’ interactions with binaural technology from a social constructivist perspective, this thesis gains rich insights into the impact of using binaural technology when creating soundscapes. Chapter One explores sound artists’ and field recordists’ work that use binaural technology for the shared purpose of documenting urban soundwalks. The first case study “Audio Postcards” is also informed by questions drawn from acoustic ecology, socio-political theories on the practices of everyday life and the challenges that arise in finding, recording and preserving ‘soundmarks’. Chapter Two outlines practitioners’ applications of binaural technology to create an intimate connection to an art piece such as theatre director David Rosenberg’s productions. Peter Salvatore Petralia’s concept of headspace is applied to the chapter’s case study: “From Austria To America” to further understand binaural technology’s psychoacoustic effects. Chapter Three studies the impact of social groups who use binaural technology to record classical music performances. Traditional stereo and binaural classical music recording conventions are shaped in a new direction in two case studies: “Point of Audition” and “From Page to Stage”. Questions of ‘fidelity’ also arise from this creative practice. The outcomes of this reflective binaural practice unearth deep layers of understanding. This thesis discovers the impact of binaural technology moves beyond the effect it has on a listener to realise this recording practice also impacts a recordist’s decisions in the field and a sound artist’s creative choices when crafting soundscapes. The beneficial impact of binaural technology including its inconspicuous nature, the ability to imprint an artist’s subjective signature on recordings and its lifelike immersive qualities in playback are revealed through practice and reflection. Representing the real, the role of artist and point of audition are also themes explored throughout each chapter. Ultimately, insights gained are woven together as a means of constructing an original theoretical framework for an under-theorised subject: understanding how social user groups shape the impact of using binaural technology when creating soundscapes.

A tier 1 automotive components supplier has developed a virtual user interface system for the purpose of replacing currently existing physical buttons mounted on automotive steering wheels. The system is capable of generating acoustic and vibratory feedback to the user for the purpose of mimicking the sound and feel of mechanical buttons. The work performed in this thesis served to investigate what the input waveform should be to the system in order to generate a desired audio output signal. Additionally, subjective testing in the form of a sound jury was conducted in order to identify which types of sounds should be associated with which command functions in order to indicate successful initiation of the intended function. A model for grouping command functions into banks, where each bank is assigned a single sound, was then developed for the purpose of reducing the total number of button sounds used in an automotive environment.