Patent ID: 8781133

Claim:
Apparatus for generating a multi-channel audio signal based on an input audio signal, comprising: a main signal upmixer configured to provide a main multi-channel audio signal based on all components of the input audio signal, wherein the main multi-channel audio signal comprises more channels than the input audio signal; a section selector configured to select or not select a section of the input audio signal based on an analysis of the input audio signal, wherein the selected section of the input audio signal, a processed selected section of the input audio signal or a reference signal associated with the selected section of the input audio signal is provided as section signal, wherein the section selector selects a section of the input audio signal by a separation of a sound particle; a section signal upmixer configured to provide a section upmix signal based on the section signal, wherein the section signal upmixer generates the section upmix signal comprising more than one sound particle; and a combiner configured to overlay the main multi-channel audio signal and the section upmix signal to acquire the multi-channel audio signal, wherein the section signal upmixer is configured to provide the section upmix signal based on a position parameter, wherein a portion of the multi-channel audio signal, which is based on the section signal, for each channel of the multi-channel audio signal is based on the position parameter.