Method for generating surround channel audio
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United States of America Patent
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Jan 9, 2018
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app pub date -
Nov 18, 2016
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Dec 14, 2015
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Abstract
A method includes extracting a difference value through extraction of features of a front audio channel signal and a surround channel of multichannel sound content by setting the front audio channel signal and the surround channel as input and output channel signals, respectively, training a deep neural network (DNN) model by setting the input channel signal and the difference value as an input and an output of the DNN model, respectively, normalizing a frequency-domain signal of the input channel signal by converting the input channel signal into the frequency-domain signal, and extracting estimated difference values by decoding the normalized frequency-domain signal through the DNN model, deriving an estimated spectral amplitude of the surround channel based on the front audio channel signal and the difference value, and deriving an audio signal of a final surround channel by converting the estimated spectral amplitude of the surround channel into the time domain.
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