Patent Document ID: 9659567
Application ID: 14655037
Patent Status: 1

Claim One:
1. A method, performed by an audio signal processing device, for estimating a first sample of a first subband signal in a first subband of an audio signal; wherein the first subband signal of the audio signal is determined using an analysis filterbank comprising a plurality of analysis filters which provide a plurality of subband signals in a plurality of subbands from the audio signal, respectively, the method comprising determining a model parameter of a signal model; determining a prediction coefficient to be applied to a previous sample of a first decoded subband signal derived from the first subband signal, based on the signal model, based on the model parameter and based on the analysis filterbank; wherein a time slot of the previous sample is prior to a time slot of the first sample; and determining an estimate of the first sample by applying the prediction coefficient to the previous sample; wherein determining the prediction coefficient comprises determining the prediction coefficient using a look-up table or an analytical function; the look-up table or the analytical function provide the prediction coefficient as a function of a parameter derived from the model parameter; the look-up table or the analytical function are pre-determined based on the signal model and based on the analysis filterbank; and the audio signal processing device comprises one of more processors.