Patent ID: 7424502

Claim:
A method of searching for a best-match decimation vector of decimation factors for a non-uniform filter bank, the best-match decimation vector allowing reconstruction of an input signal of the non-uniform filter bank, the method comprising: a) selecting a partial decimation vector having a number l<1, of decimation factors, where l does not exceed a maximum number, K, of decimation factors of said best-match decimation vector; b) processing said l decimation factors to determine whether said partial decimation vector satisfies a feasibility criterion; c) processing a least common multiplier value of said l decimation factors to determine whether said least common multiplier value is greater than a predetermined value; d) processing a maximum decimation value, D max , of said partial decimation vector to determine whether D max is less than one; e) processing a minimum decimation value, D min , of said partial decimation vector to determine whether D min is greater than one; and f) incrementing by one the number of decimation factors in the partial decimation vector and repeating steps b) to e) when said feasibility criterion is satisfied and said least common multiplier value is less than said predetermined value and D max is not less than one and D min is not greater than one.