Patent ID: 6567781
Filing Date: 2003-05-20
Classification: G10L

Abstract:
A method of compressing audio data comprising:determining a multi-state dynamical rule set and an associated transform basis function, of a dynamical system; receiving input audio data; and performing a forward transform using the transform basis function to obtain transform coefficients suitable for reconstructing the input audio data, wherein the rule of evolution of the dynamical system, having a neighborhood of m cells and a radius r, is defined by using a vector of integers Wj (j=0,1,2,3, . . . , 2m) such that the state of cell a(r)&it;(t+1)=(&Sum;j=02m-2&it;Wj&it;Î±j+W2m-1)W2m&it;mod&it;â€ƒ&it;Kwhere 0&lE;Wjand &agr;j are permutations and products of states of the m cells in the neighborhood.