Regis Rossi Alves Faria

• PhD
• Associate Professor at University of São Paulo

Este guia apresenta orientações gerais sobre como elaborar trabalhos acadêmicos e relatórios técnico-científicos, cobrindo da escrita de monografias e trabalhos de conclusão de curso a outros tipos de trabalhos, como projetos de pesquisa, programas artísticos, pôsteres e artigos científicos. Verificam-se muitas dúvidas básicas sobre como deve ser o...

The textile industry is one of the most pollutants in the world. It is estimated that only 20% of the textiles that become solid waste are recycled. In this way, to reduce impacts, the textile industry must include the circular economy in its processing, that is, thinking about textile manufacturing in a closed circuit, which minimizes the consumpt...

In 2021 the Forum of the Brazilian Digital Terrestrial Television System (SBTVD) accomplished the phase 2 of the TV3.0 project, consisting of a series of tests of the technologies proposed for this next generation of TVD system in Brazil. The tests were conducted by research groups of Brazilian universities. Particularly referring to the audio codi...

Through the Ecos Study we investigate possibilities for musical structuring based on theories of emergence, finding a fertile territory for experimentations within Agostino Di Scipio's paradigm of Audible Ecosystems. The inclusion of the acoustic environment as an active component of the musical system led us to rethink classical techniques of soun...

This paper presents a concise report on the research developed at the Laboratory of Audio and Music Technology at the EACH-USP. The laboratory was founded in 2011 targeting the areas of music technology, musical acoustics and bioacoustics, strengthening its scope in 2019 to the areas of sound and music computing and audio engineering. Six projects...

Master class about the sound in immersive experiencies and applications, covering the 3D/360 degree sound in audiovisual production, the unique characteristics of the spatial audition, techniques such as ambisonics and the AUDIENCE spatial audio system. The class revised the proposal of an scale to measure the sound immersion level, strategies to i...

Inegavelmente, vivemos um momento ímpar, onde as transformações ocorrem com a mesma energia que a pandemia se alastra e vitimiza milhares de pessoas pelo mundo. No meio dessa tragédia civilizacional surge, no entanto, uma janela para observar um fenômeno interessante: o papel da arte nos entreatos de uma vivência em ansiedade e confinamentos. Podem...

Este artigo apresenta alguns métodos para se projetar determinados processos de sinal de áudio em tempo real, tais como delay, echo, reverb, chorus, flanger e phaser. Aplica também técnicas de Análise Aural, que buscam resolver problemas da percepção intrínseca do som. Analisamos as características técnicas de cada processo e os efeitos psicoacústi...

This paper presents the design in PureData of some audio signals processes in real time like delay, echo, reverb, chorus, flanger e phaser. It also applies techniques of Aural Analysis, which intends to solve problems of intrinsic sound perception. We analyze the technical characteristics of each process and the psychoacoustic effects produced by t...

This poster describes the design in PureData of some audio signals processes in real time like delay, echo, reverb, chorus, flanger e phaser. We analyze the technical characteristics of each process and the psychoacoustic effects produced by them in human perception and audio applications. A deeper comprehension of the consequences of sound process...

Thinking on the congruencies between music and sports, we propose with this art installation some novel paths and connections for music production in a little explored field, in the interdisciplinarity with sports. Some similarities in the acting of musicians and athletes, such as the need of technical domain through discipline and practice. A musi...

O termo percussão múltipla refere-se a um grupo de instrumentos de percussão arranjados e dispostos espacialmente, de forma a configurar-se em um instrumento único e integrado, com características próprias e especificidades de execução. Com a integração de instrumentação digital pode-se conceber um espectro complexo de sons percussivos operáveis so...

This work deals with the analysis and application of the Non-negative Matrix Factorization (NMF), associated with Kullback-Leibler and Itakura-Saito divergences, for the separation of digital sound sources consisting of harmonic and percussive elements. First, some mathematical fundamentals of the NMF and divergence functions are presented, aiming...

English version of the original poster presented in the 15th Brazilian Symposium on Computer Music (XV SBCM - 2015).

We present a panorama about the evolution of concepts and models for the representation of sensory dissonance in the musical context, highlighting the diversity of materials and methods found in the experiments performed to elucidate it and in the main parametric models for its estimation developed since the 19th century. We established a driving l...

The present work is about the use of Auditory Scene Analysis theory concepts in the process of creating the musical piece Quando as pedras tocam o espelho d’água (When stones touch the water mirror) by E. Frigatti. In this task, we used central conceptions about the organization and perception of sound streams, proposed by auditory psychology resea...

This paper presents some established models in sensory dissonance and an algorithm for synthesizing spectra by minimizing the sensory dissonance between notes in equal tempered scales. The ear physiology and the concept of critical bandwidths developed by Zwicker [15] are detailed and a method of spectral modelling based on Pierce’s [7] and Sethare...

Novas formas de controlar elementos sonoros aparecem paralelamente ao contínuo desenvolvimento de interfaces. Dentre tantos modos possíveis para se criar e controlar informações de comando, o uso de sensores denominados câmeras Z, utilizadas para capturar gestos e mediar a interação homem-máquina, tem sido pesquisado e utilizado por vários programa...

Proceedings of the 15th AES Brazil Conference 23-25 Outubro/October, 2017 Centro de Tecnologia da Universidade Federal de Santa Catarina Campus Trindade - Florianópolis, SC, Brazil

A counterpoint to current ecology commons oriented to the study of whole populations, recent trends in conservation behavior have motivated the search of strategies and tools for discriminating individuals out of a population annotated by automated recordings. Taking into account individual life histories and identifying subjects may improve popula...

This article describes the structure of a PureData patch that aims to generate super-consonant timbres. First, we will describe the technique used to create super consonant spectra based on Sethares and Vassilakis models of sensory dissonance. Then, we will expose our method for reducing dissonance creating spectra to be performed on equal tempered...

This article describes the implementation of an interactive software patch for Pure Data (Pd) that aims to generate consonant timbres by selecting and manipulating spectra partials using dissonance models to improve the consonance between intervals. First, we describe the technique used to create spectra based on Sethares' and Vassilakis' models of...

We present a new digital virtual instrument designed, built and played using 3D interactive technologies, with interest in reducing both learning time and difficulty in playing musical phrases and chords across the musical scale. Design concepts stress on a smart note mapping, rely on bi-manual interaction, and intend an optimized gestural performa...

Resumo: O presente trabalho tem por objetivo apresentar duas propostas de adaptação de escalas do temperamento por igual para o controlador MIDI APC Key 25 utilizando o software PureData. Essas adaptações têm dois focos: 1-uma configuração com objetivos laboratoriais para escuta de escalas de 5 a 24 divisões iguais da oitava; 2-uma adaptação para a...

This paper presents an ongoing investigation on the technique of relating equal tempered scales and notes spectra in order to reduce or to model the sensory dissonance. For this, we have created some synthesis patches using Pure Data to evaluate the perception of dissonance with artificial complex tones used in simple musical examples. The experime...

Apresentamos um relato de uso de equipamentos para registro de vocalizações de animais em campo e ferramentas utilizadas para a análise destes sinais. Nosso objetivo é contextualizar a prática da pesquisa em bioacústica de mamíferos terrestres atualmente em curso no Brasil com os recursos tecnológicos disponíveis, discutindo suas virtudes e limitaç...

Comunicação oral no 15th Brazilian Symposium on Computer Music (XV SBCM - 2015).

Poster exposto durante o 15th Brazilian Symposium on Computer Music (XV SBCM - 2015).

In the last decades considerable advances in monitoring and analysis technologies have improved the knowledge about the organization and role of animal sounds. This paper focus on some current issues in the study of mamma-lian species, showing some of the latest and promising technologies, trends in bioacoustics research and its applications.

Resumo: A partitura de escuta é um suporte gráfico de transcrição sonora bastante difundida para a análise de artes sonoras que não possuam uma notação convencionada, sendo principalmente utilizada na música eletroacústica. Nesse artigo, abordamos a utilização deste suporte para a análise de desenho de som cinematográfico a partir dos símbolos conv...

Inspired by principles for designing musical instruments we implemented a new 3D virtual instrument with a particular mapping of touchable virtual spheres to notes and chords of a given musical scale. The objects are metaphors for note keys organized in multiple lines, forming a playable spatial instrument where the player can perform certain seque...

Existing software engine implementations for Wave Field Synthesis (WFS) auralization are prone to suffer from rapid code obsolescence, limitations on changing the number of sound sources or loud- speakers, and complex installation and configuration. We present a new approach to derive a reconfigurable WFS auralization engine that relies on a patch-...

This paper presents a set of interfaces and sound processing tools under development using Pure Data (Pd) for real-time music processing. We are interested in acquiring know-how in the development of interactive software tools for real-time applications that explore concepts of reactivity in music. In this way we approach design aspects towards int...

Este artigo foi reproduzido do original final entregue pelo autor, sem edições, correções ou considerações feitas pelo comitê técnico. A AES Brasil não se responsabiliza pelo conteúdo. Outros artigos podem ser adquiridos através da Audio www.aes.org. Informações sobre a seção Brasileira podem ser obtidas em www.aesbrasil.org. Todos os direitos são...

This paper proposes that creativity in algorithmic composition is an emergent property that results from a symbiotic process between the human mind and a computational algorithm invented by it. Creativity, as an emerging property, is the product of a (somehow) unexpected combination of distinct elements, that, to be perceived as a creative act, nee...

Conventional algorithms for converting 5.1 sound fields into 2.0 have systematically suppressed the low frequency information and neglected spatial auditory effects produced by the real position of the loudspeakers in 3/2/1 arrangements. We designed a downmix variation in which the listener's head acoustic shadow and the LFE information are conside...

Do we have new paradigms emerging in sound and music technologies? What characterizes a paradigm? Paradigms are central to the scientific revolutions and to the normal science in every field, but are a rather misunderstood term. This paper introduces the main theme of this issue with a clarifying approach to the concept of paradigm and appropriate...

AUDIENCE for Pd is a library for audio immersion, sound scene production and auralization. The software enables to work independently the sound scene composition, its acoustic rendering, the encoding of its sound field in a suitable multichannel format, and finally its audition using 2D/3D loudspeaker modes. The system architecture is scalable, man...

This article deals with a variety of topics related to creativity in algorithmic composition, embracing the view that current algorithms are not able to display true creativity, although they may be very efficient auxiliary tools in musical composition. Among the approached topics are: the logic of the musical thought, the obstacle of musical meani...

In this paper we present our experience in using Virtual Reality Technologies to accurately reconstruct and further explore ancient and historic city buildings. Virtual reality techniques provide a powerful set of tools to explore and access the history of a city. In order to explore, visualize and hear such history, we divided the process in three...

In early 2003, the Brazilian government accelerated the decision process on analog to digital transition of terrestrial TV broadcast infrastructure, naming this initiative The Brazilian Digital Television System (SBTVD). This paper describes the access device architecture we have proposed for the SBTVD, as well as related issues. We focused on seve...

This article discusses a telemedicine model for emerging countries, through the description of ONCONET, a telemedicine initiative applied to pediatric oncology in Brazil. The ONCONET core technology is a Web-based system that offers health information and other services specialized in childhood cancer such as electronic medical records and cooperat...

Orchestra spatialization is a feature much requested nowadays in music composition but results of experiments with spatialization are not easy to evaluate without a real orchestra available to the composer or conductor. This paper describes an implementation of an application developed under the AUDIENCE engine to help such experiments. The propose...

A correct and wide coupling of sound to visual applications is still missing in most immersive VR environments, while future and advanced applications tend to demand a more realistic and integrated audiovisual solution to permit complete immersive experiences. Still there is a vast field of investigations till a correct and complete immersive syste...

Nos últimos anos os avanços em áudio multicanal e sistemas envolventes despertaram um grande interesse pelas técnicas para a auralização de campos sonoros espaciais, capazes de recriar ambientações acústicas com grande realismo, envolvendo o ouvinte completamente. Um estudo sobre as tecnologias e soluções para áudio espacial mostrou que a construçã...

We established a pilot telemedicine network for paediatric oncology in Brazil, linking the School of Medicine at the University of Sao Paulo in Sao Paulo City to the 'Hospital de Base' in Porto Velho, Rondonia, located in the Amazon region, 3,000 km away. The videoconferencing link used ISDN transmission at 384 kbit/s. The network was used for pati...

In this paper we introduce the AUDIENCE project undergoing in the CAVERNA Digital of the University of São Paulo, whose main purpose is to implement flexible and scalable multichannel spatial audio solutions for this CAVE environment, to permit navigation through a 2D/3D audiovisual scene with both visual and auditory immersion. An architecture for...

We introduce a novel approach to implement multimedia rendering platforms, using reconfigurable-oriented hardware/software co-design. Disadvantages of current platforms include a very short obsolescence cycle, communication and computational performance limitations, large sizes of software components, and architectures not prepared to cope with fut...

This paper describes a novel approach to implement multimedia access platforms: reconfigurable oriented co- design. Nowadays we observe a rapid and mutant evolution of multimedia standards and its de facto adoption into many consumer electronics, such as audio/video appliances, digital set-top boxes for TV access networks, mobile technologies and p...

Music is a vital element in the process of comprehending the world where we live and interact with. Frequency it exerts a subtle but expressive influence over a society's evolution line. Analysis and synthesis of music and musical instruments has always been associated with forefront technologies available at each period of human history, and there...

An algorithm is presented for the estimation of the fundamental frequency (F0) of monophonic sounds. The method relies upon accurate partial estimates, obtained on a frame basis by means of enhanced Fourier analysis. The use of state-of-the-art sinusoidal estimators allows the proposed algorithm to work with frames of minimum length (i.e., about tw...

A expressividade é um elemento chave para o transporte de emoções em música, e seu modelamento, vital para a concepção de sistemas de síntese mais realistas. Gestos musicais executados durante a interpretação usualmente portam a informação responsável pela expressividade percebida, e podem ser rastreados por meio de padrões sônicos a eles associado...