Development of an ambisonic guitar system GASP: Guitars with ambisonic spatial performance
Book chapter
Authors | Werner, Duncan, Wiggins, Bruce and Fitzmaurice, Emma |
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Abstract | Ambisonics, pioneered by Michael Gerzon (1977,1985), is a kernel-based 3D surround sound system. The encoding (recording or panning) of the audio is separated from the decoding (or rendering) of the audio to speaker feeds or, more recently, head tracked headphones (by binaurally decoding the Ambisonic sound field). Audio encoded in this way can be rendered to any number of speakers in almost any position in 3D space, as long as the positions of the speakers are known. Moreover, Ambisonics is a system optimised around a number of psycho-acoustic criteria which, when implemented, reduce the variability of audio no matter what speaker arrangement is used for reproduction. This allows for a `mix once' system where subsequent remixing is not necessary when replayed over different loudspeaker systems or headphones and allows for full 3D reproduction. The Ambisonics system is finally gaining some traction due to its use in Virtual Reality audio, using the ambiX standard (Nachbar et al. 2011) but few instruments exist that make use of this 3D spatial audio format, although previous studies into some aspects of the relationship between instruments, performance and spatialisation is available, for example, see Pysiewica and Weinzierl (2017), Graham and Bridges (2017), Bates (2010), Pukette (2007) and Graham (2012). The system combines custom and off-the-shelf hardware/software to create both a live performance Ambisonic guitar system, and virtual reality (VR) ready, binaural performance instrument. The system comprises of two aspects: firstly as an innovative audio project, fusing the musical with the technical, combining individual string timbralisation with Ambisonic surround sound. And secondly as an artistic musical project, providing alternative experimental surround sound production ideas for the guitarist and music producer, with potential applications in the Sound Arts world as well as commercial musical applications. This paper explores the possibilities of the Guitar as a spatial instrument detailing the technical and artistic processes involved in the production and live performance of the instrument. |
Keywords | Ambisonics; Binaural; Virtual Reality; Immersive Audio; Music; Audio Engineering |
Year | 2021 |
Publisher | CRC Press/ Routledge |
ISBN | 9780367363352 |
Web address (URL) | http://hdl.handle.net/10545/625313 |
hdl:10545/625313 | |
File | File Access Level Open |
File | |
Publication dates | 22 Jan 2021 |
Publication process dates | |
Deposited | 29 Oct 2020, 20:41 |
Accepted | 01 May 2020 |
Contributors | University of Derby |
https://repository.derby.ac.uk/item/94065/development-of-an-ambisonic-guitar-system-gasp-guitars-with-ambisonic-spatial-performance
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