Method and apparatus for encoding, processing and decoding of audio signal envelope by modeling a cumulative sum representation using distribution and coding quantification

摘要

An apparatus for generating an envelope of the audio signal from one or more coding values, comprising: an input interface (1610) for receiving the one or more coding values and an envelope generator (1620) for generating the envelope of the audio signal depending on one or more coding values, in which the envelope generator (1620) is configured to generate an aggregation function, depending on the one or more coding values, in which the function of aggregation comprises a plurality of aggregation points, in which each of the aggregation points comprises an argument value and an aggregation value, in which the aggregation function is monotonicly increased and in which each of the one or more Encoding values indicates at least one of the argument value and the aggregation value of one of the aggregation points of the aggregation function, in which the envelope generator ( 1620) is configured to generate the envelope of the audio signal such that the envelope of the audio signal comprises a plurality of envelope points, in which each of the envelope points comprises an argument value and a value of envelope and in which, for each of the aggregation function aggregation points, one of the envelope points of the audio signal envelope is assigned to such aggregation point, such that the argument value of said envelope point is equal to the argument value of said aggregation point and in which the envelope generator (1620) is configured to generate the envelope of the audio signal, such that the envelope value of each of the envelope points of the envelope of the audio signal depends on the aggregation value of at least one aggregation point of the aggregation function.