Rodrigo F. Cadiz

Rodrigo F. Cadiz
Pontificia Universidad Católica de Chile | UC · Instituto de Música

PhD

About

37
Publications
5,281
Reads
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120
Citations
Additional affiliations
May 2006 - present
Pontificia Universidad Católica de Chile
Position
  • Professor (Associate)
Education
September 2001 - May 2006
Northwestern University
Field of study
  • Music Technology

Publications

Publications (37)
Article
Full-text available
Deep learning, one of the fastest-growing branches of artificial intelligence, has become one of the most relevant research and development areas of the last years, especially since 2012, when a neural network surpassed the most advanced image classification techniques of the time. This spectacular development has not been alien to the world of the...
Article
Contemporary design exhibits a transition from the design of objects (as things) towards the design of interactions between subjects and objects (as processes). Furthermore, subjects are no longer considered users, but rather persons (personal identities). These persons perceive what we design from an autonomous self-referred meaning organization,...
Conference Paper
Full-text available
In this article we present Audiograph, a web-based auditory graph application that allows users to sonify numerical data directly from a spreadsheet, using Google Sheets. One or more data series can be converted into sound at the same time. Our tool is implemented as an add-on inside Google Sheets using the powerful sound synthesis engine FAUST. We...
Conference Paper
Full-text available
In this article, we present an implementation of a brain-computer-musical interface (BCMI), based on the Enobio-8 EEG device, a commercial headset that contains eight or more electrodes and a 3D accelerometer. We have developed Enobio2OSC, a software that receives data from the Enobio via TCP/IP, calculates the appropriate frequency bands, and send...
Article
Full-text available
Interaction design of DMIs is not a simple task because it involves many relations between the musician, the DMI, other musicians and the audience. The interaction quality must be a central objective on a DMI design process. Using concepts from the field of HCI and affordance theory, we propose a model that could illuminate the designing of interac...
Conference Paper
Practice as research (PaR) is concerned with practice both as a method for inquiry and as evidence of the research process, producing embodied knowledge. It has been proposed that it is the foundational strategy in performative research, a kind of research apart from quantitative and qualitative research, characterized by being expressed using form...
Conference Paper
Full-text available
Brain computer interfaces are being widely adopted for music creation and interpretation, and they are becoming a truly new category of musical instruments. Indeed, Miranda has coined the term Brain-computer Musical Interface (BCMI) to refer to this category. There are no "plug-n-play" solutions for a BCMI, these kinds of tools usually require the...
Article
A disciplinary model is proposed for design validation (DV), which contemplates validation as a process that uses quantitative and qualitative evidence to confirm that products, services, or other objects have enough interaction quality to create a valuable satisfaction level. Our model is based in the subject–object interaction event in order to a...
Article
Full-text available
This article describes methods of sound synthesis based on auditory distortion products, often called combination tones. In 1856, Helmholtz was the first to identify sum and difference tones as products of auditory distortion. Today this phenomenon is well studied in the context of otoacoustic emissions, and the “distortion” is understood as a prod...
Article
This article describes a synthesis technique based on the sonification of the dynamic behavior of a quantum particle enclosed in an infinite square well. More specifically, we sonify the momentum distribution of a one-dimensional Gaussian bouncing wave packet model. We have chosen this particular case because of its relative simplicity and interest...
Article
Due to the special nature of the acquisition domain, the quantization process of magnetic resonance imaging (MRI) data presents challenges that are not present in other medical imaging techniques. In this article, we demonstrate that the quantization error in MRI cannot be assumed to be a random variable with uniform distribution across the entire...
Chapter
Full-text available
We explore the connection between complex systems and music by studying different approaches for generating music based on a flocking system. By developing software that links the dynamics of a standard flocking algorithm to a set of sound wave generators and to a musical score, we study how each approach reflects sonically the transition to collec...
Article
Full-text available
In this work, we approach the design, implementation and evaluation of AudioGraphics, a modular computer program intended to provide activities relating mathematics to music and sound. The goal in designing this program was to facilitate mathematic representation learning processes by having pupils draw coordinates on a two-axis graphic representin...
Article
Full-text available
En el presente artículo se abordan algunos de los desafíos y características más relevantes de la creación musical en la era postdigital, desde el particular punto de vista de un compositor. Se otorga un especial énfasis a tres áreas al interior de la creación musical: la música electroacústica, la composición algorítmica y las nuevas interfaces de...
Article
In this article, some of the most important features and challenges of musical creation in the post-digital era are discussed, from the particular viewpoint of a composer. Three areas of musical creation are given special consideration: electroacoustic music, algorithmic composition and new interfaces for musical expression. This article presents b...
Conference Paper
Full-text available
We explore different approaches for generating music from the flocking dynamics of groups of mobile autonomous agents following a simple decentralized control rule. By developing software that links these dynamics to a set of sound wave generators, we study how each approach reflects sonically the transition to collective order and which produces m...
Article
Volume visualization is a difficult three-dimensional task and a significant amount of research is devoted to the development of a suitable computer input device for it. Most of the proposed models use fixed displays, thus rendering extracted slices in orientations unrelated to their real locations within the volume. We present a new device which t...
Article
Full-text available
Head Tracking systems with head pose estimation have several applications in human-computer interaction and constitute a key component of 3D audio environments. Most developed systems to date are restricted to a range of poses in which the user has to be facing the camera, are sensible to the lightning conditions and are not identity-invariant. The...
Article
A spectral sound synthesis algorithm based on threshold stochastic resonance is proposed theoretically and implemented in Matlab. The technique consists in the addition of a noise signal in the frequency domain and a comparison with a threshold. By adjusting the standard deviation of the added noise and the threshold factor it is possible to contro...
Article
Full-text available
Stochastic resonance is a nonlinear phenomenon that oc-curs when the addition of noise to a weak signal enhances its detectability or its information content. An optimal amount of added noise results in a maximum enhance-ment. The addition of noise allows the perception of a signal in contexts where it could not be perceived at all because of its l...
Article
Full-text available
A simple model aimed to emulate the control exerted by a flautist over selected parameters while exciting the flute is proposed. Using a fuzzy logic based control system, a mu-sically meaningful mapping between performance vari-ables and physical model parameters is obtained. The real time implementation in Pd (Pure data) environment shows an adequ...
Article
A fuzzy-logic approach to the challenge of composing both sound and moving images within a coherent framework is proposed. The approach is based on a fuzzy-logic model that enables a flexible mapping of either aural or visual information onto the other, and it is able to generate complex audiovisual relationships by very simple means. This mapping...
Article
Full-text available
In computer music, it is often the case that the compositional act and the parametric control of the underlying synthesis al-gorithms are not separable from each other. In these situa-tions, composition is completely intertwined with and depen-dent on the control of the synthesis parameters. The compo-sitional control of computer music by fuzzy log...
Conference Paper
Full-text available
Nowadays, fuzzy logic applications can be found in a variety of fields, specially engineering and scientific areas. However, applications of fuzzy logic in the artistic fields are not abundant. This is highly surprising if we consider the fact that other related techniques such as neural networks and genetic algorithms have been widely used for art...
Article
Full-text available
A fuzzy logic approach to the challenge of composing both sound and moving image within a coherent framework is pro-posed. This approach is based on a fuzzy logic model that en-ables a flexible mapping of either aural or visual information into the other. This model is inspired by synaesthetic experi-ences, in which a stimulus in one sensory modali...
Article
Full-text available
This article describes a novel audio synthesis technique based on sound particles, behavioral rules and fuzzy logic. Our approach borrows ideas from many-body classical physics, quantum mechanics, multi-agent and complex systems. The technique allows the creation of highly complex sonic behavior by very simple means, using the idea of a sound parti...
Article
Full-text available
Individual subjects made both verbal attribute magni-tude estimations (VAME) and similarity judgments of 12 electro-acoustic (computer generated) sounds. Three between-subjects factors were considered: musical training, familiarity with electro-acoustic music and compositional background. The sounds were constructed using different spectral and mor...

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