兩通道低延遲濾波器組的設(shè)計(jì)
Design of Two-Channel Low Delay Filter Banks
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摘要: 本文提出了一種用有效的迭代拉格朗日乘子法設(shè)計(jì)精確重構(gòu)的兩通道低延遲濾波器組.該方法具有較高的計(jì)算效率,既能設(shè)計(jì)不同長(zhǎng)度也能設(shè)計(jì)相同長(zhǎng)度的濾波器組.文中給出了設(shè)計(jì)例子并與其它方法進(jìn)行了比較.結(jié)果表明,用該方法設(shè)計(jì)的兩通道低延遲濾波器組具有更高的阻帶衰減.
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關(guān)鍵詞:
- 濾波器組;低延遲;精確重構(gòu)
Abstract: An efficient iterative lagrange multiplier approach is proposed for the design two-channel low delay perfect reconstruction filter banks. This approach has high design efficiency and can be used to design both equal-length and unequal-length filter banks. A design example is presented and compared with other methods. It can be shown that two-channel perfect reconstruction linear phase filter banks with higher stopband attenuation can be obtained using the new method. -
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