Efficient audio coding having reduced bit rate for ambient signals and decoding using same
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United States of America Patent
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Dec 22, 2015
Grant Date -
Mar 27, 2014
app pub date -
Sep 24, 2012
filing date -
Nov 19, 2010
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Abstract
An apparatus creates first data stream(s) by processing first audio signal(s) and creates second data stream(s) by processing second audio signal(s). The processing includes detecting phase information from at least one of the second audio signal(s) so as to eliminate the phase information. The second data stream(s) are created without the phase information from the at least one second audio signal. The first and second data streams are output. Another apparatus receives first data stream(s) including first audio signal(s) and receives second data stream(s) including second audio signal(s). The second audio signal(s) include at least one second audio signal where phase information has been eliminated. Phase information is detected from one of a selected first audio signal or a selected second audio signal and is added into the at least one second audio signal. Output audio is rendered using the first and second audio signal(s).
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