Patent ID: 6581081
Filing Date: 2003-06-17
Classification: G06F,H03H

Abstract:
A method for calculating wavelet packet trees for use by an adaptive size filter system, the adaptive size filter system comprising(a) at least one source of signal coefficients; (b) at least two multipliers; (c) at least one adder; and (d) at least one adaptive data switch the method for calculating the wavelet packet tree comprising the steps of: (1) obtaining signal coefficients; (2) opening the at least one adaptive data switch based in part on the number of independent signal coefficients previously obtained and requested octave of signal filtration; (3) multiplying the signal coefficients to obtain a transitional output signal; (4) directing resulting transitional output signal according to setting of the at least one adaptive switch, namely adding transitional output signal to a rippling transitional output signal from neighboring adders if the at least one adaptive data switch is closed and sending the transitional output signal to an output interface if the at least one adaptive data switch is open; and (5) receiving an output signal at the output interface from at least one open adaptive data switch.