Enhancement of ambisonic binaural reproduction using directional audio coding with optimal adaptive mixing

Archontis Politis, Leo McCormack, Ville Pulkki

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

15 Citations (Scopus)

Abstract

Headphone reproduction of recorded spatial sound scenes is becoming increasingly relevant to immersive audiovisual applications. Popular non-parametric reproduction methods, such as firstorder ambisonics (FOA), can now be surpassed through the use of perceptually-motivated parametric reproduction methods. One such established method is Directional Audio Coding (DirAC). The earlier version of DirAC for headphones was itself limited to FOA input and achieved binaural rendering through a virtual loudspeaker approach; resulting in a high computational overhead. Therefore, this paper proposes an improved DirAC method that directly synthesises the binaural cues based on the estimated spatial parameters. This method can accommodate higher-order Ambisonics (HOA) signals and has reduced computational requirements; thus, making it suitable for lightweight processing with fast update rates and head-tracking support. According to listening tests, when utilising only FOA signals, the method results in equivalent or higher spatial accuracy than third-order Ambisonics and significantly outperforms FOA reproduction.
Original languageEnglish
Title of host publicationIEEE Workshop on Applications of Signal Processing to Audio and Acoustics
PublisherIEEE
Pages379 - 383
ISBN (Electronic)978-1-5386-1632-1
DOIs
Publication statusPublished - 2017
MoE publication typeA4 Article in a conference publication
EventIEEE Workshop on Applications of Signal Processing to Audio and Acoustics - New Paltz, NY, USA, New Paltz, United States
Duration: 15 Oct 201718 Oct 2017
http://www.waspaa.com/

Publication series

NameIEEE Workshop on Applications of Signal Processing to Audio and Acoustics
ISSN (Electronic)1947-1629

Workshop

WorkshopIEEE Workshop on Applications of Signal Processing to Audio and Acoustics
Abbreviated titleWASPAA
CountryUnited States
CityNew Paltz
Period15/10/201718/10/2017
Internet address

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