Patent ID: 8457975

Claim:
An audio decoder for providing a decoded representation of an audio content on the basis of an encoded representation of the audio content, the audio decoder comprising: a linear-prediction-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of linear-prediction domain parameters associated with the audio frame; a frequency-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of frequency-domain parameters, taking into account a transform window out of a set comprising a plurality of different transform windows; and a signal combiner configured to overlap-and-add-time-domain representations of subsequent audio frames encoded in different domains, in order to smoothen a transition between the time-domain representations of the subsequent frames; wherein the set of transform windows available for application by the frequency-domain decoder core comprises an insertion window adapted for a generation of a time-domain representation of a frequency-domain encoded audio frame temporally embedded between a preceding audio frame encoded in the linear-prediction domain and a subsequent audio frame encoded in the linear-prediction-domain, wherein a left-sided transition slope of the insertion window is adapted to provide for a smooth transition between a time-domain representation of the preceding frame encoded in the linear-prediction domain and a time-domain representation of the current frame encoded in the frequency-domain, and wherein a right-sided transition slope of the insertion window is adapted to provide for a smooth transition between the time-domain representation of the current frame encoded in the frequency-domain and a time-domain representation of the subsequent frame encoded in the linear-prediction domain.