An inputting apparatus comprising: a first input unit and a second input unit; a side information decoding unit configured to obtain source information from a source information signal corresponding to a mix signal by using a short time fourier transform, STFT, wherein the coefficients associated with the STFT are grouped so that a subband signal group has a bandwidth two times larger than equivalent rectangular bandwidth, ERB; a control unit configured to: convert an input signal received via the first input unit into a source menu display command, receive source information via the side information decoding unit, and, control a source menu display to be outputted based on the source information when the source menu display command is generated; and, a display for outputting the source menu display, wherein: the mix signal is one or more channel signals comprising at least two source signals; the source information includes information regarding the at least two source signals, the source menu display comprises a list of the at least two source signals, wherein the control unit is further configured to: convert an input signal received via the second input unit into a voice mute command, the voice mute command adapted to control a level of human voice among the source signals to zero, and an image relating to the voice mute command is to be displayed on the display when the voice mute command is generated. a first input unit and a second input unit; a side information decoding unit configured to obtain source information from a source information signal corresponding to a mix signal by using a short time fourier transform, STFT, wherein the coefficients associated with the STFT are grouped so that a subband signal group has a bandwidth two times larger than equivalent rectangular bandwidth, ERB; a control unit configured to: convert an input signal received via the first input unit into a source menu display command, receive source information via the side information decoding unit, and, control a source menu display to be outputted based on the source information when the source menu display command is generated; and, convert an input signal received via the first input unit into a source menu display command, receive source information via the side information decoding unit, and, control a source menu display to be outputted based on the source information when the source menu display command is generated; and, a display for outputting the source menu display, wherein: the mix signal is one or more channel signals comprising at least two source signals; the source information includes information regarding the at least two source signals, the source menu display comprises a list of the at least two source signals, wherein the control unit is further configured to: convert an input signal received via the second input unit into a voice mute command, the voice mute command adapted to control a level of human voice among the source signals to zero, and an image relating to the voice mute command is to be displayed on the display when the voice mute command is generated. the mix signal is one or more channel signals comprising at least two source signals; the source information includes information regarding the at least two source signals, the source menu display comprises a list of the at least two source signals, wherein the control unit is further configured to: convert an input signal received via the second input unit into a voice mute command, the voice mute command adapted to control a level of human voice among the source signals to zero, and an image relating to the voice mute command is to be displayed on the display when the voice mute command is generated.