An audio decoding method comprising: receiving a two-channel downmix signal ( L 1, L 2) and upmix parameters ( α L) for parametric reconstruction of an M -channel audio signal (L, LS, LB, TFL, TBL) based on the downmix signal, where M ≥ 4; receiving signaling indicating a selected one of at least two coding formats ( F 1, F 2, F 3) of the M-channel audio signal, wherein the coding formats correspond to respective different partitions of the channels of the M -channel audio signal into respective first and second groups (601, 602) of one or more channels, wherein, in the indicated coding format, a first channel of the downmix signal corresponds to a linear combination of the first group of one or more channels of the M -channel audio signal and a second channel of the downmix signal corresponds to a linear combination of the second group of one or more channels of the M -channel audio signal; determining a set of pre-decorrelation coefficients based on the indicated coding format; computing a decorrelation input signal ( D 1, D 2, D 3) as a linear mapping of the downmix signal, wherein the set of pre-decorrelation coefficients is applied to the downmix signal, wherein the pre-decorrelation coefficients are determined such that a first channel of the M -channel audio signal contributes, via the downmix signal, to a first fixed channel ( D 3) of the decorrelation input signal in at least two of the coding formats; generating a decorrelated signal based on the decorrelation input signal; determining sets of wet and dry upmix coefficients ( γ L, β L) based on the received upmix parameters and the indicated coding format; computing a dry upmix signal ( X 1, X 2) as a linear mapping of the downmix signal, wherein the set of dry upmix coefficients is applied to the downmix signal; computing a wet upmix signal ( Y 1, Y 2) as a linear mapping of the decorrelated signal, wherein the set of wet upmix coefficients is applied to the decorrelated signal; and combining the dry and wet upmix signals to obtain a multidimensional reconstructed signal ( L̃, LS ̃, LB ̃, TFL ̃, TBL ̃) corresponding to the M -channel audio signal to be reconstructed, characterized in that the M -channel audio signal has a predefined channel configuration, and the indicated selected coding format switches between the at least two coding formats. receiving a two-channel downmix signal ( L 1, L 2) and upmix parameters ( α L) for parametric reconstruction of an M -channel audio signal (L, LS, LB, TFL, TBL) based on the downmix signal, where M ≥ 4; receiving signaling indicating a selected one of at least two coding formats ( F 1, F 2, F 3) of the M-channel audio signal, wherein the coding formats correspond to respective different partitions of the channels of the M -channel audio signal into respective first and second groups (601, 602) of one or more channels, wherein, in the indicated coding format, a first channel of the downmix signal corresponds to a linear combination of the first group of one or more channels of the M -channel audio signal and a second channel of the downmix signal corresponds to a linear combination of the second group of one or more channels of the M -channel audio signal; determining a set of pre-decorrelation coefficients based on the indicated coding format; computing a decorrelation input signal ( D 1, D 2, D 3) as a linear mapping of the downmix signal, wherein the set of pre-decorrelation coefficients is applied to the downmix signal, wherein the pre-decorrelation coefficients are determined such that a first channel of the M -channel audio signal contributes, via the downmix signal, to a first fixed channel ( D 3) of the decorrelation input signal in at least two of the coding formats; generating a decorrelated signal based on the decorrelation input signal; determining sets of wet and dry upmix coefficients ( γ L, β L) based on the received upmix parameters and the indicated coding format; computing a dry upmix signal ( X 1, X 2) as a linear mapping of the downmix signal, wherein the set of dry upmix coefficients is applied to the downmix signal; computing a wet upmix signal ( Y 1, Y 2) as a linear mapping of the decorrelated signal, wherein the set of wet upmix coefficients is applied to the decorrelated signal; and combining the dry and wet upmix signals to obtain a multidimensional reconstructed signal ( L̃, LS ̃, LB ̃, TFL ̃, TBL ̃) corresponding to the M -channel audio signal to be reconstructed, characterized in that the M -channel audio signal has a predefined channel configuration, and the indicated selected coding format switches between the at least two coding formats.