Geiger, R.R.GeigerGrill, B.B.GrillBessette, B.B.BessetteGournay, P.P.GournayFuchs, G.G.FuchsMultrus, M.M.MultrusNeuendorf, M.M.NeuendorfSchuller, G.G.Schuller2022-03-082022-03-082010https://publica.fraunhofer.de/handle/publica/309397An audio encoder (10) adapted for encoding frames of a sampled audio signal to obtain encoded frames, wherein a frame comprises a number of time domain audio samples. The audio encoder (10) comprises a predictive coding analysis stage (12) for determining information on coefficients of a synthesis filter and a prediction domain frame based on a frame of audio samples. The audio encoder (10) further comprises a time-aliasing introducing transformer (14) for transforming overlapping prediction domain frames to the frequency domain to obtain prediction domain frame spectra, wherein the time-aliasing introducing transformer (14) is adapted for transforming the overlapping prediction domain frames in a critically-sampled way. Moreover, the audio encoder (10) comprises a redundancy reducing encoder (16) for encoding the prediction domain frame spectra to obtain the encoded frames based on the coefficients and the encoded prediction domain frame spectra.en621006patent20080079862