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Sound ?eld reproduction using high-order Ambisonics (HOA) is limited to a small listening region. This is a consequence of HOA relying on a loudspeaker array to re-create, term-by-term, the lower orders of the sound ?eld’s multipole expansion. However, results from perturbation theory show that partial sums of asymptotic series can be transformed into other sequences with faster convergence; this is known as series acceleration. This study considers the use of series acceleration to improve the accuracy of sound ?eld reproduction away from the origin. This may lead to a larger listening region compared to conventional HOA. The behavior of the proposal is evaluated numerically and its potential use in sound ?eld reproduction is discussed.
Author (s): Trevino, Jorge; Sakamoto, Shuichi; Suzuko Yôiti
Affiliation:
Tohoku University, Sendai, Japan
(See document for exact affiliation information.)
Publication Date:
2018-07-06
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Session subject:
High-order Ambisonics; Multipole expansion; Series acceleration; Sound field reproduction
Permalink: https://aes2.org/publications/elibrary-page/?id=19625
(283KB)
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Trevino, Jorge; Sakamoto, Shuichi; Suzuko Yôiti; 2018; Extending the Listening Regionof High-Order Ambisonics through Series Acceleration [PDF]; Tohoku University, Sendai, Japan; Paper P8-1; Available from: https://aes2.org/publications/elibrary-page/?id=19625
Trevino, Jorge; Sakamoto, Shuichi; Suzuko Yôiti; Extending the Listening Regionof High-Order Ambisonics through Series Acceleration [PDF]; Tohoku University, Sendai, Japan; Paper P8-1; 2018 Available: https://aes2.org/publications/elibrary-page/?id=19625