Models for sound reproduction
Article REF: TE5914 V1

Models for sound reproduction

Authors : Nicolas TSINGOS, Olivier WARUSFEL

Publication date: February 10, 2008 | Lire en français

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Overview

ABSTRACT

Spatialization techniques now make it possible to simulate virtual sound sources. Interactive virtual reality systems mean a user can be completely immersed in exploring of a whole new world. This article analyzes different techniques that can provide an immersive sound dimension in an interactive virtual environment. For this, the problem of sound reproduction is first addressed. Sound-propagation modeling – necessary for controlling the simulation – is then explored in detail. To close, the studies of structured and optimized audio reproduction, and direct manipulation of in-situ recording, are examined.

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AUTHORS

  • Nicolas TSINGOS: Senior Researcher, INRIA (French National Institute for Research in Computer Science and Control) - REVES team (rendering and virtual sound environments)

  • Olivier WARUSFEL: Researcher, IRCAM (Institut de recherche et coordination acoustique/musique)

 INTRODUCTION

While 3D visualization is a key component of virtual reality applications, sound is another. Today, sound spatialization techniques make it possible to simulate virtual sound sources placed arbitrarily in space around the listener. Whether on headphones or loudspeakers, they enable a tenfold immersion in computer-generated environments, while remaining natural and minimally intrusive for the user. This dossier provides an overview of the different techniques that can be used to bring an immersive sound dimension to an interactive virtual environment.

Main acronyms

BCC

Binaural Cue Coding

BSP

Binary Space Partioning

FDN

Feedback Delay Network

MIPS

Millions of operations per second of signal

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