Patent ID: 7822617
Filing Date: 2010-10-26
Classification: G10L

Abstract:
1. In an encoder arranged to encode a multi-channel audio signal, said encoder including a first main encoder, a second auxiliary encoder and a controller, a method of encoding said multi-channel audio signal, comprising: encoding, using said first main encoder, a first signal representation of at least one of said multiple channels in a first main encoding process; and encoding, using said second auxiliary encoder, a second signal representation of at least one of said multiple channels in a second, filter-based auxiliary encoding process, characterized by: generating, using said controller, output data representative of the selected frame division configuration and filter length for each sub-frame of the selected frame division configuration, wherein said output data includes data that while indicating the selected frame division configuration of an encoding frame into said set of sub-frames at the same time provides an indication of the selected filter length for each sub-frame.