Patent ID: 11881228
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. A method for decoding a received audio signal comprising an information related prediction coefficients and a gain parameter, the method comprising
calculating a speech related spectral shaping information from the prediction coefficients;
generating a decoding noise-like signal;
shaping a spectrum of the decoding noise-like signal or an amplified representation thereof using the spectral shaping information to acquire a shaped decoding noise-like signal; and
synthesizing a synthesized signal from the amplified shaped encoding noise-like signal and the prediction coefficients;
combining a spectrum of the decoding noise-like signal or a spectrum derived thereof with a transfer function comprising

Ft(z)=1−βz−1 

wherein z indicates a representation in the z-domain, wherein β represents a measure (voicing) for a voicing determined by relating an energy of a past frame of the audio signal and an energy of a present frame of the audio signal, wherein the measure β is determined in function of a voicing value.