The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Para conseguir um sistema de reprodução de campo sonoro, é importante projetar filtros inversos multicanal que cancelem os efeitos das funções de transferência de ambiente. O método de projeto no domínio da frequência baseado na solução de menor norma (LNS) requer menos memória e menos cálculo do que o método de projeto no domínio do tempo. Contudo, o método LNS não pode garantir a causalidade ou estabilidade dos filtros. Neste artigo, é proposto um método de projeto de um filtro inverso no domínio do tempo usando processamento iterativo no domínio da frequência para reprodução de campo sonoro multicanal, e o resultado da análise numérica é descrito. O método proposto pode diminuir o erro quadrático de cada ponto de controle em 3-12 dB. Além disso, o som reproduzido por este método atinge uma melhoria de mais de 13 dB na relação sinal-ruído segmentar (SNR) em comparação com aquele projetado pelo método LNS para respostas de impulso em ambiente real.
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Yosuke TATEKURA, Hiroshi SARUWATARI, Kiyohiro SHIKANO, "An Iterative Inverse Filter Design Method for the Multichannel Sound Field Reproduction System" in IEICE TRANSACTIONS on Fundamentals,
vol. E84-A, no. 4, pp. 991-998, April 2001, doi: .
Abstract: To achieve a sound field reproduction system, it is important to design multichannel inverse filters which cancel the effects of room transfer functions. The design method in the frequency domain based on the least-norm solution (LNS) requires less memory and less calculation than the design method in the time domain. However, the LNS method cannot guarantee the causality or stability of the filters. In this paper, a design method of a time-domain inverse filter using iterative processing in the frequency domain for multichannel sound field reproduction is proposed, and the result of numerical analysis is described. The proposed method can decrease the squared error of every control point by 3-12 dB. Furthermore, the sound reproduced by this method attains over 13 dB improvement in the segmental signal-noise ratio (SNR) compared with that designed by the LNS method for real environment impulse responses.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e84-a_4_991/_p
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@ARTICLE{e84-a_4_991,
author={Yosuke TATEKURA, Hiroshi SARUWATARI, Kiyohiro SHIKANO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={An Iterative Inverse Filter Design Method for the Multichannel Sound Field Reproduction System},
year={2001},
volume={E84-A},
number={4},
pages={991-998},
abstract={To achieve a sound field reproduction system, it is important to design multichannel inverse filters which cancel the effects of room transfer functions. The design method in the frequency domain based on the least-norm solution (LNS) requires less memory and less calculation than the design method in the time domain. However, the LNS method cannot guarantee the causality or stability of the filters. In this paper, a design method of a time-domain inverse filter using iterative processing in the frequency domain for multichannel sound field reproduction is proposed, and the result of numerical analysis is described. The proposed method can decrease the squared error of every control point by 3-12 dB. Furthermore, the sound reproduced by this method attains over 13 dB improvement in the segmental signal-noise ratio (SNR) compared with that designed by the LNS method for real environment impulse responses.},
keywords={},
doi={},
ISSN={},
month={April},}
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TY - JOUR
TI - An Iterative Inverse Filter Design Method for the Multichannel Sound Field Reproduction System
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 991
EP - 998
AU - Yosuke TATEKURA
AU - Hiroshi SARUWATARI
AU - Kiyohiro SHIKANO
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E84-A
IS - 4
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - April 2001
AB - To achieve a sound field reproduction system, it is important to design multichannel inverse filters which cancel the effects of room transfer functions. The design method in the frequency domain based on the least-norm solution (LNS) requires less memory and less calculation than the design method in the time domain. However, the LNS method cannot guarantee the causality or stability of the filters. In this paper, a design method of a time-domain inverse filter using iterative processing in the frequency domain for multichannel sound field reproduction is proposed, and the result of numerical analysis is described. The proposed method can decrease the squared error of every control point by 3-12 dB. Furthermore, the sound reproduced by this method attains over 13 dB improvement in the segmental signal-noise ratio (SNR) compared with that designed by the LNS method for real environment impulse responses.
ER -