Decoder and decoding method for discontinuous transmission of parametrically coded independent streams with metadata

An audio decoder (200) according to an embodiment is provided. The audio decoder (200) comprises an input interface (210) for receiving a bitstream which depends on audio content comprising at least one of a plurality of audio objects and a plurality of audio channels; wherein a transport signal comprising two or more transport channels is encoded within the bitstream, and the audio content is encoded within the transport signal; or wherein information on a background noise is encoded within the bitstream instead of the transport signal, wherein the information on the background noise comprises information on a background noise of at least one of the two or more transport channels or information on a background noise of a derived signal which depends on at least one of the two or more transport channels- Moreover, the audio decoder (200) comprises a renderer (220) for generating one or more audio output signals depending on the audio content being encoded with the bitstream. If the transport signal comprising the two or more transport channels is encoded within the bitstream, the renderer (220) is configured to generate the one or more audio output signals depending on the two or more transport channels. If the information on the background noise is encoded within the bitstream instead of the transport signal, the renderer (220) is configured to generate the one or more audio output signals depending on the information on the background noise.