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Investigations of Orchestra Auralizations Using the Multi-Channel Multi-Source Auralization Technique

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Room acoustics computer modeling is a tool for generating impulse responses and auralizations from modeled spaces. The auralizations are commonly made from a single-channel anechoic recording of solo instruments. For this investigation, auralizations of an entire orchestra were created using a multi-channel multi-source auralization technique, involving individual five-channel anechoic recordings of each instrumental part of two symphonies. In the first study, these auralizations were subjectively compared to orchestra auralizations made using (a) a single omni-directional source, (b) a surface source, and (c) single-channel multi-source method. Results show that the multi-source auralizations were rated to be more realistic than the surface source ones and to have larger source width than the single omni-directional source auralizations. No significant differences were found between the one- and five-channel multi-source auralizations, though. In a second subjective study, one- and five-channel multi-source auralizations were created for three different orchestra configurations: "contemporary", with the first and second violin sections seated adjacent to each other; "traditional", with the first and second violin sections seated across from each other; and "random", with the various instrument sections mixed across the stage. Subjects were generally able to distinguish between these orchestra configurations when listening to the multi-source auralizations; however, in one instance, subjects could only discern differences between the orchestra configurations with the five-channel multi-source auralizations. Overall, the multi-source auralization technique was found to be an effective method for creating realistic orchestra auralizations, but using multichannel anechoic recordings with the multi-source method was not found to be a consistent advantage in all cases.
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Document Type: Research Article

Publication date: 01 November 2008

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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