Luis de Sa

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The optimization of subband filter banks for signal and image coding is normally dealt with by numerical means. It will be shown that this optimization can be done analytically in the case of the 4-tap CQF prototype filter. Coding gain and aliasing energy were considered in the optimization. Using parametrizations of the prototype filter coefficients it was(More)
A general approach to the non-expansive M band decomposition of finite length signals is presented. The technique is based on linear signal extensions and can be applied to all types of linear and non-linear phase M band perfect reconstruction filter banks. The signal expansion is described by a linear transformation on the input signal and the extended(More)
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