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METHOD AND SYSTEM FOR ENCODING LEFT AND RIGHT CHANNELS OF A STEREO AUDIO SIGNAL WITH SELECTION BETWEEN TWO AND FOUR SUBFRAME MODELS DEPENDING ON THE BIT BUDGET
METHOD AND SYSTEM FOR ENCODING LEFT AND RIGHT CHANNELS OF A STEREO AUDIO SIGNAL WITH SELECTION BETWEEN TWO AND FOUR SUBFRAME MODELS DEPENDING ON THE BIT BUDGET
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机译:通过比特预算的两种和四种子帧模型之间的选择来编码立体声音频信号的左右声道的方法和系统
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摘要
FIELD: means for encoding a stereophonic audio signal.;SUBSTANCE: method includes mixing down the left and right channels of a stereo audio signal to form a primary and secondary channels. Primary channel coding and secondary channel coding are performed, wherein primary channel encoding and secondary channel encoding comprise determining a first bit budget for encoding a primary channel and a second bit budget for encoding a secondary channel. If the second bit budget is sufficient, the secondary channel is encoded using a first coding model which employs four subframes per frame. If the second bit budget is insufficient to use the first encoding model, the secondary channel is encoded using a second encoding model which uses two subframes per frame.;EFFECT: technical result consists in improved efficiency of coding.;17 cl, 18 dwg
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