Patent ID: 8588440
Filing Date: 2013-11-19
Classification: H04S

Abstract:
1. An apparatus for modifying a sweet-spot of a spatial M-channel audio signal, M indicating a first number of channels, the apparatus comprising: a receiver for receiving an N-channel audio signal, N indicating a second number of channels, the second number being less than the first number; parameter means for determining a plurality of spatial parameters relating characteristics of the N-channel audio signal to characteristics of the spatial M-channel audio signal; modifying means for modifying at least one of a front to back balance, a left to right balance, and a front to back dispersion, of a sweet-spot of the spatial M-channel audio signal by modifying at least one of the plurality of spatial parameters; and generating means for generating the spatial M-channel audio signal by up-mixing the N-channel audio signal using the at least one modified spatial parameter.