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".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Este artigo propõe um supressor de ruído de baixa complexidade com bancos de filtros híbridos e ladrilhos tempo-frequência adaptativos. Um banco de filtros híbrido de análise fornece transformação eficiente ao decompor ainda mais os compartimentos de baixa frequência após uma transformação grosseira com um tamanho de quadro curto. Um banco de filtros híbrido de síntese também reduz a complexidade computacional de maneira semelhante ao banco de filtros híbrido de análise. O ladrilho tempo-frequência adaptativo reduz o número de cálculos de ganho espectral. Ele gera de forma adaptativa informações lado a lado no plano tempo-frequência com base nas características do sinal. O número médio de instruções em um chip DSP típico foi reduzido em 30% para 7.5 MIPS no caso de sinais mono amostrados em 44.1 kHz. Um resultado de teste subjetivo mostra que a qualidade do som do método proposto é comparável à do método convencional.
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Osamu SHIMADA, Akihiko SUGIYAMA, Toshiyuki NOMURA, "A Low Complexity Noise Suppressor with Hybrid Filterbanks and Adaptive Time-Frequency Tiling" in IEICE TRANSACTIONS on Fundamentals,
vol. E93-A, no. 1, pp. 254-260, January 2010, doi: 10.1587/transfun.E93.A.254.
Abstract: This paper proposes a low complexity noise suppressor with hybrid filterbanks and adaptive time-frequency tiling. An analysis hybrid filterbank provides efficient transformation by further decomposing low-frequency bins after a coarse transformation with a short frame size. A synthesis hybrid filterbank also reduces computational complexity in a similar fashion to the analysis hybrid filterbank. Adaptive time-frequency tiling reduces the number of spectral gain calculations. It adaptively generates tiling information in the time-frequency plane based on the signal characteristics. The average number of instructions on a typical DSP chip has been reduced by 30% to 7.5 MIPS in case of mono signals sampled at 44.1 kHz. A Subjective test result shows that the sound quality of the proposed method is comparable to that of the conventional one.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E93.A.254/_p
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@ARTICLE{e93-a_1_254,
author={Osamu SHIMADA, Akihiko SUGIYAMA, Toshiyuki NOMURA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Low Complexity Noise Suppressor with Hybrid Filterbanks and Adaptive Time-Frequency Tiling},
year={2010},
volume={E93-A},
number={1},
pages={254-260},
abstract={This paper proposes a low complexity noise suppressor with hybrid filterbanks and adaptive time-frequency tiling. An analysis hybrid filterbank provides efficient transformation by further decomposing low-frequency bins after a coarse transformation with a short frame size. A synthesis hybrid filterbank also reduces computational complexity in a similar fashion to the analysis hybrid filterbank. Adaptive time-frequency tiling reduces the number of spectral gain calculations. It adaptively generates tiling information in the time-frequency plane based on the signal characteristics. The average number of instructions on a typical DSP chip has been reduced by 30% to 7.5 MIPS in case of mono signals sampled at 44.1 kHz. A Subjective test result shows that the sound quality of the proposed method is comparable to that of the conventional one.},
keywords={},
doi={10.1587/transfun.E93.A.254},
ISSN={1745-1337},
month={January},}
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TY - JOUR
TI - A Low Complexity Noise Suppressor with Hybrid Filterbanks and Adaptive Time-Frequency Tiling
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 254
EP - 260
AU - Osamu SHIMADA
AU - Akihiko SUGIYAMA
AU - Toshiyuki NOMURA
PY - 2010
DO - 10.1587/transfun.E93.A.254
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E93-A
IS - 1
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - January 2010
AB - This paper proposes a low complexity noise suppressor with hybrid filterbanks and adaptive time-frequency tiling. An analysis hybrid filterbank provides efficient transformation by further decomposing low-frequency bins after a coarse transformation with a short frame size. A synthesis hybrid filterbank also reduces computational complexity in a similar fashion to the analysis hybrid filterbank. Adaptive time-frequency tiling reduces the number of spectral gain calculations. It adaptively generates tiling information in the time-frequency plane based on the signal characteristics. The average number of instructions on a typical DSP chip has been reduced by 30% to 7.5 MIPS in case of mono signals sampled at 44.1 kHz. A Subjective test result shows that the sound quality of the proposed method is comparable to that of the conventional one.
ER -