Scene-Based Audio Implemented with Higher Order Ambisonics (HOA)

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Conference Paper
Content Type: Original Research
Volume: 2015, No. 10, pp. 1–13
Abstract: Scene-based Audio uses a sound-field technology called “Higher Order Ambisonics” (HOA) to create holistic descriptions of both live-captured and artistically-created sound scenes that are independent of specific loudspeaker layouts. For efficient representation, the audio can be carried as a set of PCM channels that contain predominant sounds and ambience in separate tracks. Standard audio bandwidth-compression techniques then can be applied to the PCM channels. This approach is in contrast to conventional channel-based sound representations, in which one signal is used for each loudspeaker of a target reproduction system, with the implication that upmixing or downmixing is required when loudspeaker configurations other than the intended one are used for actual reproduction. This paper examines how, with Scene-based Audio, there can be satisfactory reproduction of immersive sound at bitrates corresponding to the equivalent of just 6 channels, while an alternative sound-field method that exclusively employs audio objects typically involves much higher bitrates.
Publication Date: 2015-10-26
DOI: 10.5594/M001651
ISBN: Print: 978-1-61482-956-0
Link: https://doi.org/10.5594/M001651
Author(s): Nils PetersQualcomm Technologies, Inc., San Diego, CA, USA
Deep SenQualcomm Technologies, Inc., San Diego, CA, USA
Moo-Young KimQualcomm Technologies, Inc., San Diego, CA, USA
Oliver WuebboltTechnicolor, Hannover, Germany
S. Merrill WeissMerrill Weiss Group LLC, Metuchen, NJ, USA
Keyword(s): Scene-based Audio, Higher-order Ambisonics (HOA), Spatial Audio, Next-Generation Audio, MPEG-H, ATSC 3.0
Copyright: © 2015 Society of Motion Picture and Television Engineers, Inc.

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Nils Peters, Deep Sen, Moo-Young Kim, Oliver Wuebbolt, and S. Merrill Weiss; Scene-Based Audio Implemented with Higher Order Ambisonics (HOA), SMPTE Meetings and Conferences ( October 2015); SMPTE, 2015, ISBN: 978-1-61482-956-0. Available at https://doi.org/10.5594/M001651

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Nils Peters, Deep Sen, Moo-Young Kim, Oliver Wuebbolt, and S. Merrill Weiss; Scene-Based Audio Implemented with Higher Order Ambisonics (HOA), SMPTE Meetings and Conferences ( October 2015); SMPTE, 2015, ISBN: 978-1-61482-956-0. Available at https://doi.org/10.5594/M001651

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<span class="citation">Nils Peters, Deep Sen, Moo-Young Kim, Oliver Wuebbolt, and S. Merrill Weiss; <cite>Scene-Based Audio Implemented with Higher Order Ambisonics (HOA)</cite>, SMPTE Meetings and Conferences ( October 2015); SMPTE, 2015, ISBN: 978-1-61482-956-0. Available at <a href="https://doi.org/10.5594/M001651" target="_blank" rel="noopener">https://doi.org/10.5594/M001651</a></span>

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<li>
Nils Peters, Deep Sen, Moo-Young Kim, Oliver Wuebbolt, and S. Merrill Weiss; <cite id="bib-10-5594-m001651">Scene-Based Audio Implemented with Higher Order Ambisonics (HOA)</cite>, SMPTE Meetings and Conferences ( October 2015); SMPTE, 2015, ISBN: 978-1-61482-956-0
<span class="doi">10.5594/M001651</span>
</li>