Patent ID: 8774312

Claim:
A method for scalable improvement of a quality of an encoding method according to International Telecommunication Union (“ITU”) Recommendation G.722, comprising: comparing a digital error signal (“e H ”), derived from an input signal to be encoded and a prognosis signal, in sections to a number of M*L N different reference signals (“c(n)”) in an iterative process having a number of repeated steps depending on a scope of an expansion; deriving from each comparison a reference signal having a minimum error signal with respect to a prescribed error criterion, wherein each of the reference signals is made up of equidistant Dirac impulses (“δ(n)”) according to the formula c ⁡ ( n ) = ∑ p = 0 N - 1 ⁢ α p · δ ⁡ ( n - off - M · p ) and wherein off=[0, . . . M−1] indicates a distance of a first impulse from a beginning of a comparison segment, α p ε{α 0 , α 1 , . . . , α L-1 } indicates an amplitude value, M is a distance between two individual pulses, N is a number of pulses, L is a number of different levels α; and transmitting information about the reference signal with the minimum error signal.