APPARATUS AND METHOD FOR AUDIO SIGNAL ENVELOPE ENCODING, PROCESSING, AND DECODING BY MODELLING A CUMULATIVE SUM REPRESENTATION EMPLOYING DISTRIBUTION QUANTIZATION AND CODING

摘要

An apparatus for generating an audio signal envelope from one or more coding values is provided. The apparatus includes an input interface for receiving the one or more coding values, and an envelope generator for generating the audio signal envelope depending on the one or more coding values. The envelope generator is configured to generate an aggregation function depending on the one or more coding values, wherein the aggregation function includes a plurality of aggregation points. Furthermore, the envelope generator is configured to generate the audio signal envelope such that the envelope value of each of the envelope points of the audio signal envelope depends on the aggregation value of at least one aggregation point of the aggregation function.

主权项

1. An apparatus for generating an audio signal envelope from at least one coding value, comprising:
an input interface for receiving the at least one coding value, and an envelope generator for generating the audio signal envelope depending on the at least one coding value, wherein the envelope generator is configured to generate an aggregation function depending on the at least one coding value, wherein the aggregation function comprises a plurality of aggregation points, wherein each of the aggregation points comprises an argument value and an aggregation value, wherein the aggregation function monotonically increases, and wherein each of the at least one coding value indicates at least one of the argument value and the aggregation value of one of the aggregation points of the aggregation function, wherein the envelope generator is configured to generate the audio signal envelope such that the audio signal envelope comprises a plurality of envelope points, wherein each of the envelope points comprises an argument value and an envelope value, and wherein, for each of the aggregation points of the aggregation function, one of the envelope points of the audio signal envelope is assigned to said aggregation point such that the argument value of said envelope point is equal to the argument value of said aggregation point, and wherein the envelope generator is configured to generate the audio signal envelope such that the envelope value of each of the envelope points of the audio signal envelope depends on the aggregation value of at least one aggregation point of the aggregation function.