Switched Spatial Impulse Response Convolution as an Ambisonic distance-panning function

Patrick Cairns, David Moore

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Ambisonics offers a robust and effective approach to the recording, processing and delivery of Spatial Audio. The Ambisonic system is often considered to provide a perceptually and computationally advantageous Spatial Audio experience in comparison to typical Binaural systems. This is true even when an end-step Binaural render is required, as is typical in Virtual or Augmented Reality systems which naturally imply audio delivery via headphones. Standard Ambisonic processing allows for the rotation of a sound field around an origin position. There is not, however, a strongly established means of modulating the radial distance of a virtual sound source from the origin. This paper presents a potential solution to an Ambisonic distance-panning function for both static and dynamic virtual sources in the form of a FOA (First Order Ambisonics) Switched-SIR (Spatial Impulse Response) Convolution Reverberator. This includes a presentation of the framework for such a function, and an analysis of audio rendered using prototype scripts.
Original languageEnglish
Title of host publicationICSA 2019: Proceedings of the 5th International Conference on Spatial Audio
EditorsStephan Werner, Steve Göring
Place of PublicationIlmenau
Pages99-106
Number of pages8
DOIs
Publication statusPublished - 18 Nov 2019

Fingerprint

Impulse response
Convolution
Headphones
Augmented reality
Acoustic fields
Processing
Virtual reality
Acoustic waves

Keywords

  • spatial audio
  • ambisonics
  • distance-panning

Cite this

Cairns, P., & Moore, D. (2019). Switched Spatial Impulse Response Convolution as an Ambisonic distance-panning function. In S. Werner, & S. Göring (Eds.), ICSA 2019: Proceedings of the 5th International Conference on Spatial Audio (pp. 99-106). Ilmenau. https://doi.org/10.22032/dbt.39961
Cairns, Patrick ; Moore, David. / Switched Spatial Impulse Response Convolution as an Ambisonic distance-panning function. ICSA 2019: Proceedings of the 5th International Conference on Spatial Audio. editor / Stephan Werner ; Steve Göring. Ilmenau, 2019. pp. 99-106
@inproceedings{78341856c4334239859f9f582e3d267c,
title = "Switched Spatial Impulse Response Convolution as an Ambisonic distance-panning function",
abstract = "Ambisonics offers a robust and effective approach to the recording, processing and delivery of Spatial Audio. The Ambisonic system is often considered to provide a perceptually and computationally advantageous Spatial Audio experience in comparison to typical Binaural systems. This is true even when an end-step Binaural render is required, as is typical in Virtual or Augmented Reality systems which naturally imply audio delivery via headphones. Standard Ambisonic processing allows for the rotation of a sound field around an origin position. There is not, however, a strongly established means of modulating the radial distance of a virtual sound source from the origin. This paper presents a potential solution to an Ambisonic distance-panning function for both static and dynamic virtual sources in the form of a FOA (First Order Ambisonics) Switched-SIR (Spatial Impulse Response) Convolution Reverberator. This includes a presentation of the framework for such a function, and an analysis of audio rendered using prototype scripts.",
keywords = "spatial audio, ambisonics, distance-panning",
author = "Patrick Cairns and David Moore",
note = "Acceptance email and AAM req'd 19/12/19 DC and 21/1/20 ET",
year = "2019",
month = "11",
day = "18",
doi = "10.22032/dbt.39961",
language = "English",
pages = "99--106",
editor = "Stephan Werner and Steve G{\"o}ring",
booktitle = "ICSA 2019: Proceedings of the 5th International Conference on Spatial Audio",

}

Cairns, P & Moore, D 2019, Switched Spatial Impulse Response Convolution as an Ambisonic distance-panning function. in S Werner & S Göring (eds), ICSA 2019: Proceedings of the 5th International Conference on Spatial Audio. Ilmenau, pp. 99-106. https://doi.org/10.22032/dbt.39961

Switched Spatial Impulse Response Convolution as an Ambisonic distance-panning function. / Cairns, Patrick; Moore, David.

ICSA 2019: Proceedings of the 5th International Conference on Spatial Audio. ed. / Stephan Werner; Steve Göring. Ilmenau, 2019. p. 99-106.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Switched Spatial Impulse Response Convolution as an Ambisonic distance-panning function

AU - Cairns, Patrick

AU - Moore, David

N1 - Acceptance email and AAM req'd 19/12/19 DC and 21/1/20 ET

PY - 2019/11/18

Y1 - 2019/11/18

N2 - Ambisonics offers a robust and effective approach to the recording, processing and delivery of Spatial Audio. The Ambisonic system is often considered to provide a perceptually and computationally advantageous Spatial Audio experience in comparison to typical Binaural systems. This is true even when an end-step Binaural render is required, as is typical in Virtual or Augmented Reality systems which naturally imply audio delivery via headphones. Standard Ambisonic processing allows for the rotation of a sound field around an origin position. There is not, however, a strongly established means of modulating the radial distance of a virtual sound source from the origin. This paper presents a potential solution to an Ambisonic distance-panning function for both static and dynamic virtual sources in the form of a FOA (First Order Ambisonics) Switched-SIR (Spatial Impulse Response) Convolution Reverberator. This includes a presentation of the framework for such a function, and an analysis of audio rendered using prototype scripts.

AB - Ambisonics offers a robust and effective approach to the recording, processing and delivery of Spatial Audio. The Ambisonic system is often considered to provide a perceptually and computationally advantageous Spatial Audio experience in comparison to typical Binaural systems. This is true even when an end-step Binaural render is required, as is typical in Virtual or Augmented Reality systems which naturally imply audio delivery via headphones. Standard Ambisonic processing allows for the rotation of a sound field around an origin position. There is not, however, a strongly established means of modulating the radial distance of a virtual sound source from the origin. This paper presents a potential solution to an Ambisonic distance-panning function for both static and dynamic virtual sources in the form of a FOA (First Order Ambisonics) Switched-SIR (Spatial Impulse Response) Convolution Reverberator. This includes a presentation of the framework for such a function, and an analysis of audio rendered using prototype scripts.

KW - spatial audio

KW - ambisonics

KW - distance-panning

UR - https://www.db-thueringen.de/receive/dbt_mods_00039936

U2 - 10.22032/dbt.39961

DO - 10.22032/dbt.39961

M3 - Conference contribution

SP - 99

EP - 106

BT - ICSA 2019: Proceedings of the 5th International Conference on Spatial Audio

A2 - Werner, Stephan

A2 - Göring, Steve

CY - Ilmenau

ER -

Cairns P, Moore D. Switched Spatial Impulse Response Convolution as an Ambisonic distance-panning function. In Werner S, Göring S, editors, ICSA 2019: Proceedings of the 5th International Conference on Spatial Audio. Ilmenau. 2019. p. 99-106 https://doi.org/10.22032/dbt.39961