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Horizontal 3D sound field recording and 2.5D synthesis with omni-directional circular arrays

Abstract: 

Although 2.5D sound field synthesis with a circular loudspeaker array can be used in a 3D sound field, a 2D sound field, instead of a 3D sound field, is assumed for a sound field recording with a circular microphone array. This paper presents a horizontal 3D sound field recording and 2.5D synthesis method used in 3D sound fields with multiple co-centered omni-directional circular microphone arrays and a circular loudspeaker array without vertical derivative measurements. The spherical harmonic spectrums used for 2.5D synthesis are extracted from the recorded horizontal sound pressures and the driving function of a circular sound source is analytically derived based on 2.5D higher-order Ambisonics. The results of computer simulations indicate the effectiveness of the proposed method, in comparison with the conventional least squares-based pressure matching, and 2D cylindrical harmonic analysis-based approaches.

https://ieeexplore.ieee.org/document/8683009/

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Paper Details

Authors:
Takuma Okamoto
Submitted On:
10 May 2019 - 3:08am
Short Link:
Type:
Poster
Event:
Presenter's Name:
Takuma Okamoto
Paper Code:
AASP-P15.10
Document Year:
2019
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Document Files

icassp_2019_okamoto_2.pdf

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[1] Takuma Okamoto, "Horizontal 3D sound field recording and 2.5D synthesis with omni-directional circular arrays", IEEE SigPort, 2019. [Online]. Available: http://sigport.org/4279. Accessed: Oct. 17, 2019.
@article{4279-19,
url = {http://sigport.org/4279},
author = {Takuma Okamoto },
publisher = {IEEE SigPort},
title = {Horizontal 3D sound field recording and 2.5D synthesis with omni-directional circular arrays},
year = {2019} }
TY - EJOUR
T1 - Horizontal 3D sound field recording and 2.5D synthesis with omni-directional circular arrays
AU - Takuma Okamoto
PY - 2019
PB - IEEE SigPort
UR - http://sigport.org/4279
ER -
Takuma Okamoto. (2019). Horizontal 3D sound field recording and 2.5D synthesis with omni-directional circular arrays. IEEE SigPort. http://sigport.org/4279
Takuma Okamoto, 2019. Horizontal 3D sound field recording and 2.5D synthesis with omni-directional circular arrays. Available at: http://sigport.org/4279.
Takuma Okamoto. (2019). "Horizontal 3D sound field recording and 2.5D synthesis with omni-directional circular arrays." Web.
1. Takuma Okamoto. Horizontal 3D sound field recording and 2.5D synthesis with omni-directional circular arrays [Internet]. IEEE SigPort; 2019. Available from : http://sigport.org/4279