Otso Lähdeoja

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In this paper we describe an ongoing research on augmented instruments, based on the specific case study of the electric guitar. The key question of the relationship between gesture, instrument and sound is approached via an analysis of the electric guitar’s design, playing technique and interface characteristics. The study points out some inherent defaults(More)
In this paper we present a series of algorithms developed to detect the following guitar playing techniques : bend, hammer-on, pull-off, slide, palm muting and harmonic. Detection of playing techniques can be used to control external content (i.e audio loops and effects, videos, light events, etc.), as well as to write real-time score or to assist guitar(More)
This project aims at studying how recent interactive and interactions technologies would help extend how we play the guitar, thus defining the “multimodal guitar”. Our contributions target three main axes: audio analysis, gestural control and audio synthesis. For this purpose, we designed and developed a freely-available toolbox for augmented guitar(More)
This paper suggests the use of a plywood panel, which is also a scenographic element in a dance performance, as a flat speaker. The sound emanating from the panel is subjectively different from a traditional loudspeaker, since the sound appears to originate from behind the panel. However, its frequency response is severely coloured by the panel modes, and(More)
ABSTRACT This paper provides a report of a research effort to transform architectural and scenographic surfaces into sound sources and use them in artistic creation. Structure-borne sound drivers are employed to induce sound into the solid surfaces, making them vibrate and emit sound. The sound waves can be perceived both via the aural (airborne diffusion)(More)
This project aims at studying how recent interactive and interaction technologies would help extend how we play the guitar, thus defining the “multimodal guitar”. We investigate two axes, 1) “A gestural/polyphonic sensing/processing toolbox to augment guitar performances”, and 2) “An interactive guitar score following environment for adaptive learning”.(More)
This paper presents an ongoing project for augmenting acoustic instruments with active acoustics. Active acoustics are defined as audio-rate vibration driven into the instruments physical structure, inducing air-borne sound output. The instrument’s acoustic sound is thus doubled by an electronic soundscape radiating from the same source. The article is(More)
In this project we investigate new ways of diffusing the sound via the use of sound drivers, which enables to turn any surface into audio diffusion surface. This kind of technology can benefit to a lot of varied projects. Our investigations led us to use this technology in two types of application : an artistic one, in which drivers were used with(More)