METHOD AND APPARATUS FOR GENERATING AN ENHANCEMENT LAYER WITHIN AN AUDIO CODING SYSTEM

申请公布号：US2009112607(A1)

申请号：US20080187423

申请日期：2008.08.07

申请公布日期：2009.04.30

申请人：

MOTOROLA, INC.

发明人：ASHLEY JAMES P.;GIBBS JONATHAN A.;MITTAL UDAR

分类号：G10L19/00

主分类号：G10L19/00

摘要：During operation an input signal to be coded is received and coded to produce a coded audio signal. The coded audio signal is then scaled with a plurality of gain values to produce a plurality of scaled coded audio signals, each having an associated gain value and a plurality of error values are determined existing between the input signal and each of the plurality of scaled coded audio signals. A gain value is then chosen that is associated with a scaled coded audio signal resulting in a low error value existing between the input signal and the scaled coded audio signal. Finally, the low error value is transmitted along with the gain value as part of an enhancement layer to the coded audio signal.

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