两通道低延迟滤波器组的设计

本文提出了一种用有效的迭代拉格朗日乘子法设计精确重构的两通道低延迟滤波器组.该方法具有较高的计算效率,既能设计不同长度也能设计相同长度的滤波器组.文中给出了设计例子并与其它方法进行了比较.结果表明,用该方法设计的两通道低延迟滤波器组具有更高的阻带衰减.

Design of Two-Channel Low Delay Filter Banks

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.