发明名称 |
Digital signal sub-band separating / combining apparatus achieving band-separation and band-combining filtering processing with reduced amount of group delay |
摘要 |
<p>An apparatus having a band-separating filter bank (1) for separating a digital signal into a plurality of sub-band signals, to be processed or transmitted, and a band-combining filter bank (2) for subsequently combining the resultant sub-band signals into a single digital signal, wherein each of the band-separating filter bank (1) and band-combining filter bank (2) incorporates a FIR low pass filter having an asymmetric impulse response, as the prototype filter of the filter bank. A significant reduction can thereby be achieved in the amount of overall group delay that results from the processing performed by these filter banks. <IMAGE></p> |
申请公布号 |
EP1104101(A2) |
申请公布日期 |
2001.05.30 |
申请号 |
EP20000119904 |
申请日期 |
2000.09.13 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
TANGUCHI, SHOHEI;ITO, MASAYUKI;BANBA, YUTAKA |
分类号 |
H03H17/02;(IPC1-7):H03H17/02;H03H21/00 |
主分类号 |
H03H17/02 |
代理机构 |
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代理人 |
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