Patent ID: 6167093
Filing Date: 2000-12-26
Classification: G06F

Abstract:
An information encoding method for encoding information, comprising the steps of:forward orthogonal transforming an input signal using a windowing function for forward orthogonal transform so that, on inverse orthogonal transform, waveform elements are conflicted between neighboring blocks for forming waveform signals; andencoding output spectral signals produced by the forward orthogonal transform; whereinthe shape of the windowing function for forward orthogonal transform employed in the forward orthogonal transform is different from that of a windowing function for inverse orthogonal transform employed for inverse orthogonal transform; and furtherwherein the shape of transient portions of the windowing function for forward orthogonal transform are obtained by dividing a window obtained by the equation: ##EQU10## into two and shifting where w.sub.1 (n) is the windowing function for forward orthogonal transform, q is a value close to 1 and M is a selected number of output spectral components.