Audio signal decoder, audio encoder signal, representacón audio signal multi-channel modified, procedures and computer program

A decoder audio signal (200; 300; 1500; 1800) to provide a representation of deaudio signal multi-channel decoded (232; 312; 1812) based on a representation of audio signal multicanalcodificada (211,212; 310; ; 340; 1830) configured to usarselectivamente contours distortion specific channel time individual audio (332; 1824) or uncontorno distortion decoder time distortion (210,216,218,219,220, 230.240: 1810), the decoder audio signal comprising time multi-channel attachment (332; 1824) for the reconstruction of a plurality of audio deanery represented by the representation of audio signal encoded multi-channel.