Patent ID: 9154895
Filing Date: 2015-10-06
Classification: H04S

Abstract:
1. An apparatus of processing a multi-channel signal, the apparatus comprising: a sound separator to receive a multi-channel signal and to determine a first number (N) of channel signals based on at least one of a mixing characteristic and a spatial characteristic of the multi-channel signal, and to separate the multi-channel signal into the first number (N) of channel signals, the first number (N) of channel signals being generated such that the multi-channel signal is separated; and a sound synthesizer to synthesize the first number (N) of channel signals to be a second number (M) of channel signals, wherein the sound separator comprises: a panning coefficient extractor to extract a panning coefficient from the multi-channel signal; and a prominent panning coefficient estimator to extract a prominent panning coefficient from the extracted panning coefficient using an energy histogram, and to determine a number of the prominent panning coefficients as N.