Search results for "Sound"
showing 10 items of 1845 documents
Quanta in Sound, the Sound of Quanta: A Voice-Informed Quantum Theoretical Perspective on Sound
2022
Humans have a privileged, embodied way to explore the world of sounds, through vocal imitation. The Quantum Vocal Theory of Sounds (QVTS) starts from the assumption that any sound can be expressed and described as the evolution of a superposition of vocal states, i.e., phonation, turbulence, and supraglottal myoelastic vibrations. The postulates of quantum mechanics, with the notions of observable, measurement, and time evolution of state, provide a model that can be used for sound processing, in both directions of analysis and synthesis. QVTS can give a quantum-theoretic explanation to some auditory streaming phenomena, eventually leading to practical solutions of relevant sound-processing…
PROPAGAZIONE DI ONDE DI RAYLEIGH LUNGO SUPERFICI CURVE: UNO STUDIO NUMERICO E SPERIMENTALE
2014
Il fenomeno della propagazione delle onde di superficie lungo confini rettilinei (superfici piane) è stato studiato adeguatamente. Tuttavia le indagini riguardanti la loro propagazione in superfici cilindriche sono limitate e risultano insufficienti ai fini di un loro utilizzo nelle tecniche d’ispezione non distruttive (NDE), nonostante possano essere di grande interesse per svariate applicazioni. E’ stato dimostrato sperimentalmente che l’onda superficiale subisce un cambiamento di fase durante la sua propagazione lungo una superficie cilindrica. Un approccio numerico è stato sviluppato per studiare questi effetti per diversi materiali, curvature e frequenze. I risultati numerici e sperime…
Referenceless thermometry using radial basis function interpolation
2014
The Proton Resonance Frequency (PRF) shift provide a method for temperature change measurements during thermotherapy. Conventional PRF thermometry works subtracting one or multiple baseline images. The method leads to artifacts caused by tissue motion and frequency drift. Various works estimating the background phase from each acquired image phase are present in literature. These algorithms are called “referenceless” because they don’t require any subtraction of baseline images for calculating temperature increment. Conventional referenceless methods estimate baseline image by fitting the background phase outside the heated region through a polynomial approach. In this work a background pha…
Radial Basis Function Interpolation for Referenceless Thermometry Enhancement
2015
MRgFUS (Magnetic Resonance guided Focused UltraSound) is a new and non-invasive technique to treat different diseases in the oncology field, that uses Focused Ultrasound (FUS) to induce necrosis in the lesion. Temperature change measurements during ultrasound thermo-therapies can be performed through magnetic resonance monitoring by using Proton Resonance Frequency (PRF) thermometry. It measures the phase variation resulting from the temperature-dependent changes in resonance frequency by subtracting one phase baseline image from actual phase. Referenceless thermometry aims to re-duce artefacts caused by tissue motion and frequency drift, fitting the back-ground phase outside the heated reg…
CubeHarmonic: A new musical instrument based on Rubik{'}s cube with embedded motion sensor
2019
A contemporary challenge involves scientific education and the connection between new technologies and the heritage of the past. CubeHarmonic (CH) joins novelty and tradition, creativity and edu- cation, science and art. It takes shape as a novel musical instrument where magnetic 3D motion tracking technology meets musical per- formance and composition. CH is a Rubik’s cube with a note on each facet, and a chord or chord sequence on each face. The posi- tion of each facet is detected through magnetic 3D motion tracking. While scrambling the cube, the performer gets new chords and new chord sequences. CH can be used to compose, improvise,1 and teach music and mathematics (group theory, permu…
A perceptual sound space for auditory displays based on sung-vowel synthesis.
2022
AbstractWhen designing displays for the human senses, perceptual spaces are of great importance to give intuitive access to physical attributes. Similar to how perceptual spaces based on hue, saturation, and lightness were constructed for visual color, research has explored perceptual spaces for sounds of a given timbral family based on timbre, brightness, and pitch. To promote an embodied approach to the design of auditory displays, we introduce the Vowel–Type–Pitch (VTP) space, a cylindrical sound space based on human sung vowels, whose timbres can be synthesized by the composition of acoustic formants and can be categorically labeled. Vowels are arranged along the circular dimension, whi…
The Sound Design Toolkit
2017
The Sound Design Toolkit is a collection of physically informed sound synthesis models, specifically designed for practice and research in Sonic Interaction Design. The collection is based on a hierarchical, perceptually founded taxonomy of everyday sound events, and implemented by procedural audio algorithms which emphasize the role of sound as a process rather than a product. The models are intuitive to control – and the resulting sounds easy to predict – as they rely on basic everyday listening experience. Physical descriptions of sound events are intentionally simplified to emphasize the most perceptually relevant timbral features, and to reduce computational requirements as well. Keywo…
Salvatore Sciarrino. The Sicilian alchemist composer
2012
Salvatore Sciarrino (Palermo, 1947) began his career in the fervent climate of the six Settimane Internazionali Nuova Musica. Still very young he attracted the attention of the musical world, with his sonorous invention full of startling innovation that was to make him one of the protagonists of the contemporary musical panorama. Sciarrino is today the best-known and most performed Italian composer. His catalogue is a prodigiously large one, and his career is dotted with prestigious prizes and awards. Alchemically transmuting sound, finding new virginity in it has for fifty years been the objective of his music. Timbric experimentation is the goal of his virtuosity. The prevailing use of ha…
Dall’antropologia della musica all’acustemologia
2021
Il testo delinea una storia dell'etnomusicologia a partire dalla pubblicazione di "Antropolologia della musica" di A. P. Merriam, per arrivare alle nuove opzioni metodologiche proposte da Steven Feld con l'antropologia del suono e l'acustemologia. The text outlines the development of studies in the field of the so called Ethtnomusicology from the publishing of the book "Antthropology of Music" by A. P. Merriam up to new approaches such as "anthropology of sound" and "acoustemology" proposed by Steven Feld.
Etnografie del suono tra natura e cultura
2020
Relationship between nature and culture has deeply changed within the years, from an almost expected opposition of the two terms to a total overthrow which implies their mutual entanglement. The aim of this contribution is to show how such a change has affected oral musical tradition studies, focusing on some topics belong-ing to different theoretical-methodological frames and different historical periods: from comparative musicology to ethnomusicology, from anthropology of music to biomusicology (in reference also to evolutive musicology and to zoomusicology), from anthropology of sound to acustemology. Among the themes dealt with: the “na-ture” of musical scales, the phylogeny of musical …