1. An apparatus for generating one or more audio channels, wherein the apparatus comprises: a metadata decoder for generating one or more reconstructed metadata signals from one or more processed metadata signals depending on a control signal, wherein each of the one or more reconstructed metadata signals indicates information associated with an audio object signal of one or more audio object signals, wherein the metadata decoder is configured to generate the one or more reconstructed metadata signals by determining a plurality of reconstructed metadata samples for each of the one or more reconstructed metadata signals, and an audio channel generator for generating the one or more audio channels depending on the one or more audio object signals and depending on the one or more reconstructed metadata signals, wherein the metadata decoder is configured to receive a plurality of processed metadata samples of each of the one or more processed metadata signals, wherein the metadata decoder is configured to receive the control signal, wherein the metadata decoder is configured to determine each reconstructed metadata sample of the plurality of reconstructed metadata samples of each reconstructed metadata signal of the one or more reconstructed metadata signals, so that, when the control signal indicates a first state, said reconstructed metadata sample is a sum of one of the processed metadata samples of one of the one or more processed metadata signals and of another already generated reconstructed metadata sample of said reconstructed metadata signal, and so that, when the control signal indicates a second state being different from the first state, said reconstructed metadata sample is said one of the processed metadata samples of said one of the one or more processed metadata signals.