发明名称 |
Signal analyzing method, signal synthesizing method of complex exponential modulation filter bank, program thereof and recording medium thereof |
摘要 |
Provided is a complex exponential modulation filter bank which can reduce quantity of arithmetic operation, and can realize low electric power consumption or speeding-up. This complex exponential modulation filter bank has a step of calculating a first intermediate signal from an input signal, a step of calculating a second intermediate signal from the first intermediate signal, a step of calculating a third intermediate signal from the second intermediate signal with fast Fourier transform, and a step of calculating a complex band output signal from the third intermediate signal.
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申请公布号 |
US7433907(B2) |
申请公布日期 |
2008.10.07 |
申请号 |
US20040986624 |
申请日期 |
2004.11.12 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NAGAI KIYOTAKA;USAMI HIKARU |
分类号 |
G06F17/10;G10L19/14;G10L11/00;G10L19/02;H03H17/02 |
主分类号 |
G06F17/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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