FIELD: information technology.
SUBSTANCE: invention relates to means for coding and decoding multi-channel audio signal. A method of encoding of a multi-channel input audio signal includes the steps of forming the down-mixing the low frequency components of a subset of channels of the input signal waveform, encoding each downmix channel, thereby forming subjected downmixed data coded waveform perform parametric encoding at least some of the upper frequency components of each channel input, thereby forming a parametrically encoded data and generating a coded sound signal (e.g., coded signal format E-AC-3) indicating data subjected to downmix coded waveform and parametrically encoded data. Other aspects are methods of decoding this coded signal and a system adapted to perform any embodiment of the inventive method.
EFFECT: technical result is to increase the quality of the encoded signal.
30 cl, 4 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| MDCT-BASED COMPLEX PREDICTION STEREO CODING | 2011 |
|
RU2554844C2 |
| STEREOPHONIC CODING BASED ON MDCT WITH COMPLEX PREDICTION | 2011 |
|
RU2683175C2 |
| STEREOPHONIC CODER AND DECODER OF AUDIO SIGNALS | 2014 |
|
RU2665214C1 |
| AUDIO ENCODER AND AUDIO DECODER WITH METADATA INFORMATION ON PROGRAM OR STRUCTURE OF INSERTED STREAMS | 2014 |
|
RU2589370C1 |
| STEREOPHONIC CODE AND DECODER OF AUDIO SIGNALS | 2014 |
|
RU2645271C2 |
| HYBRID SPEECH AMPLIFICATION WITH SIGNAL FORM CODING AND PARAMETRIC CODING | 2014 |
|
RU2639952C2 |
| AUDIO PROCESSING SYSTEM | 2014 |
|
RU2625444C2 |
| CALCULATION OF CONVERTER SIGNAL-NOISE RATIO WITH REDUCED COMPLEXITY | 2013 |
|
RU2610588C2 |
| SOUND CODING DEVICE AND DECODING DEVICE | 2014 |
|
RU2641265C1 |
| AUDIO DECODING | 2007 |
|
RU2420814C2 |
