Audio scene encoder for encoding an audio scene, the audio scene comprising at least two component signals, the audio scene encoder comprising: a core encoder for core encoding the at least two component signals, wherein the core encoder is configured to generate a first encoded representation for a first portion of the at least two component signals, and to generate a second encoded representation for a second portion of the at least two component signals, wherein the core encoder is configured to form a time frame from the at least two component signals, wherein a first frequency subband of the time frame of the at least two component signals is the first portion of the at least two component signals and a second frequency subband of the time frame is the second portion of the at least two component signals, wherein the first frequency subband is separated from the second frequency subband by a predetermined border frequency, wherein the core encoder is configured to generate the first encoded representation for the first frequency subband comprising M component signals, and to generate the second encoded representation for the second frequency subband comprising N component signals, wherein M is greater than N, and wherein N is greater than or equal to 1; a spatial analyzer for analyzing the audio scene comprising the at least two component signals to derive one or more spatial parameters or one or more spatial parameter sets for the second frequency subband; and an output interface for forming an encoded audio scene signal, the encoded audio scene signal comprising the first encoded representation for the first frequency subband comprising the M component signals, the second encoded representation for the second frequency subband comprising the N component signals, and the one or more spatial parameters or one or more spatial parameter sets for the second frequency subband. a core encoder for core encoding the at least two component signals, wherein the core encoder is configured to generate a first encoded representation for a first portion of the at least two component signals, and to generate a second encoded representation for a second portion of the at least two component signals, wherein the core encoder is configured to form a time frame from the at least two component signals, wherein a first frequency subband of the time frame of the at least two component signals is the first portion of the at least two component signals and a second frequency subband of the time frame is the second portion of the at least two component signals, wherein the first frequency subband is separated from the second frequency subband by a predetermined border frequency, wherein the core encoder is configured to generate the first encoded representation for the first frequency subband comprising M component signals, and to generate the second encoded representation for the second frequency subband comprising N component signals, wherein M is greater than N, and wherein N is greater than or equal to 1; a spatial analyzer for analyzing the audio scene comprising the at least two component signals to derive one or more spatial parameters or one or more spatial parameter sets for the second frequency subband; and an output interface for forming an encoded audio scene signal, the encoded audio scene signal comprising the first encoded representation for the first frequency subband comprising the M component signals, the second encoded representation for the second frequency subband comprising the N component signals, and the one or more spatial parameters or one or more spatial parameter sets for the second frequency subband.