A device comprising: an encoder configured to: generate a first high-band portion of a first signal based on a left audio signal and a right audio signal; and generate a set of adjustment gain parameters based on a high-band non-reference signal, the high-band non-reference signal corresponding to one of a left high-band audio signal or a right high-band audio signal, the left high-band audio signal corresponding to a high-band portion of the left audio signal and the right high-band audio signal corresponding to a high-band portion of the right audio signal; and wherein the encoder is further configured to determine the high-band non-reference signal by: designating one of the left and right high-band audio signals as a high band reference signal and the other of the left and right high-band audio signals as the high-band non-reference signal based on which of the left and right audio signals is designated as a reference signal, wherein the high-band reference signal is designated by generating a high-band reference signal indicator to indicate which of the left or right high-band audio signal is designated; updating which of the left and right high-band audio signals is designated as the high-band reference signal and which is designated as the high-band non-reference signal based on an energy of the left audio signal and an energy of the right audio signal; and a transmitter configured to: transmit information corresponding to the first high-band portion of the first signal; transmit the set of adjustment gain parameters; and transmit the high-band reference signal indicator. an encoder configured to: generate a first high-band portion of a first signal based on a left audio signal and a right audio signal; and generate a set of adjustment gain parameters based on a high-band non-reference signal, the high-band non-reference signal corresponding to one of a left high-band audio signal or a right high-band audio signal, the left high-band audio signal corresponding to a high-band portion of the left audio signal and the right high-band audio signal corresponding to a high-band portion of the right audio signal; and wherein the encoder is further configured to determine the high-band non-reference signal by: designating one of the left and right high-band audio signals as a high band reference signal and the other of the left and right high-band audio signals as the high-band non-reference signal based on which of the left and right audio signals is designated as a reference signal, wherein the high-band reference signal is designated by generating a high-band reference signal indicator to indicate which of the left or right high-band audio signal is designated; updating which of the left and right high-band audio signals is designated as the high-band reference signal and which is designated as the high-band non-reference signal based on an energy of the left audio signal and an energy of the right audio signal; and generate a first high-band portion of a first signal based on a left audio signal and a right audio signal; and generate a set of adjustment gain parameters based on a high-band non-reference signal, the high-band non-reference signal corresponding to one of a left high-band audio signal or a right high-band audio signal, the left high-band audio signal corresponding to a high-band portion of the left audio signal and the right high-band audio signal corresponding to a high-band portion of the right audio signal; and wherein the encoder is further configured to determine the high-band non-reference signal by: designating one of the left and right high-band audio signals as a high band reference signal and the other of the left and right high-band audio signals as the high-band non-reference signal based on which of the left and right audio signals is designated as a reference signal, wherein the high-band reference signal is designated by generating a high-band reference signal indicator to indicate which of the left or right high-band audio signal is designated; updating which of the left and right high-band audio signals is designated as the high-band reference signal and which is designated as the high-band non-reference signal based on an energy of the left audio signal and an energy of the right audio signal; and designating one of the left and right high-band audio signals as a high band reference signal and the other of the left and right high-band audio signals as the high-band non-reference signal based on which of the left and right audio signals is designated as a reference signal, wherein the high-band reference signal is designated by generating a high-band reference signal indicator to indicate which of the left or right high-band audio signal is designated; updating which of the left and right high-band audio signals is designated as the high-band reference signal and which is designated as the high-band non-reference signal based on an energy of the left audio signal and an energy of the right audio signal; and a transmitter configured to: transmit information corresponding to the first high-band portion of the first signal; transmit the set of adjustment gain parameters; and transmit the high-band reference signal indicator. transmit information corresponding to the first high-band portion of the first signal; transmit the set of adjustment gain parameters; and transmit the high-band reference signal indicator.