An audio encoding apparatus comprising: a SAOC (Spatial Audio Object Coding) encoder, a SAC (Spatial Audio Coding) encoder, a bitstream formatter, and Preset-ASI (Audio Scene Information) unit; wherein the SAC encoder is configured to perform down-mixing of a plurality of audio channels, generating a background scene object corresponding to the down-mixed audio channels, encoding the down-mixed audio channels and a first spatial cue for the plurality of audio channels obtained from the SAC (Spatial Audio Coding) scheme and outputting (i) a SAC bitstream including the first spatial cue and additional information for the plurality of audio channels into the bitstream formatter, and (ii) the background scene object into the SAOC encoder; wherein the SAOC encoder is configured to perform down-mixing of a plurality of objects directly inputted and the background scene object inputted from the SAC encoder, encoding a down-mixed object, a second spatial cue for the plurality of objects and additional information for restoring and controlling each object of the plurality of objects and the background scene object and outputting a SAOC bitstream into the bitstream formatter; wherein the preset-ASI unit is configured to generate a preset-ASI as object control information received from an external device based on a control signal and generating a preset-ASI bitstream including the preset-ASI, wherein the object control information has information on a location and a level of each audio object of the plurality of objects and output layout information; wherein the bitstream formatter is configured to generate a representative bitstream using the SAOC bitstream outputted from the SAOC encoder, the SAC bitstream outputted from the SAC encoder and the preset-ASI bitstream outputted from the preset-ASI unit; and wherein the representative bitstream further includes a SAOC bitstream header comprising (i) ID of object generated by a sub-band unit having more sub-bands than the limited number of sub-bands of the SAC encoder, wherein the object generated by the sub-band unit, having more sub-bands than the limited number of sub-bands of the SAC encoder, is an object of the plurality of objects directly inputted into the SAOC encoder, (ii) type of parameter bands including sub-band type for generating the spatial cue, and (iii) ID of type of additional parameter including IPD and OPD. a SAOC (Spatial Audio Object Coding) encoder, a SAC (Spatial Audio Coding) encoder, a bitstream formatter, and Preset-ASI (Audio Scene Information) unit; wherein the SAC encoder is configured to perform down-mixing of a plurality of audio channels, generating a background scene object corresponding to the down-mixed audio channels, encoding the down-mixed audio channels and a first spatial cue for the plurality of audio channels obtained from the SAC (Spatial Audio Coding) scheme and outputting (i) a SAC bitstream including the first spatial cue and additional information for the plurality of audio channels into the bitstream formatter, and (ii) the background scene object into the SAOC encoder; wherein the SAOC encoder is configured to perform down-mixing of a plurality of objects directly inputted and the background scene object inputted from the SAC encoder, encoding a down-mixed object, a second spatial cue for the plurality of objects and additional information for restoring and controlling each object of the plurality of objects and the background scene object and outputting a SAOC bitstream into the bitstream formatter; wherein the preset-ASI unit is configured to generate a preset-ASI as object control information received from an external device based on a control signal and generating a preset-ASI bitstream including the preset-ASI, wherein the object control information has information on a location and a level of each audio object of the plurality of objects and output layout information; wherein the bitstream formatter is configured to generate a representative bitstream using the SAOC bitstream outputted from the SAOC encoder, the SAC bitstream outputted from the SAC encoder and the preset-ASI bitstream outputted from the preset-ASI unit; and wherein the representative bitstream further includes a SAOC bitstream header comprising (i) ID of object generated by a sub-band unit having more sub-bands than the limited number of sub-bands of the SAC encoder, wherein the object generated by the sub-band unit, having more sub-bands than the limited number of sub-bands of the SAC encoder, is an object of the plurality of objects directly inputted into the SAOC encoder, (ii) type of parameter bands including sub-band type for generating the spatial cue, and (iii) ID of type of additional parameter including IPD and OPD.