FIELD: physics, audio.
SUBSTANCE: invention relates to a method of encoding an audio signal and means of carrying out said method. An encoding concept, which is linear prediction-based using spectral decomposition of an input audio signal to compute linear prediction coefficients, uses spectral domain noise shaping based on the computed linear prediction coefficients. The coding efficiency may remain even if such a lapped transform is used for the spectral decomposition which causes aliasing and necessitates time aliasing cancellation such as critically sampled lapped transforms such as an MDCT.
EFFECT: providing a coding concept which enables to reduce complexity with comparable or even higher coding efficiency.
13 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| LINEAR PREDICTION BASED AUDIO CODING USING IMPROVED PROBABILITY DISTRIBUTION ESTIMATION | 2013 |
|
RU2651187C2 |
| NOISE FILLING IN AUDIO CODING WITH PERCEPTION TRANSFORMATION | 2014 |
|
RU2631988C2 |
| NOISE FILLING CONCEPT | 2014 |
|
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| CONTROLLING THE FREQUENCY BAND IN ENCODERS AND DECODERS | 2018 |
|
RU2752520C1 |
| APPARATUS AND METHOD FOR ENCODING AND DECODING AUDIO SIGNAL USING ALIGNED LOOK-AHEAD PORTION | 2012 |
|
RU2574849C2 |
| APPARATUS AND METHOD FOR ENCODING AND DECODING AN AUDIO SIGNAL USING DOWNSAMPLING OR INTERPOLATION OF SCALE PARAMETERS | 2018 |
|
RU2762301C2 |
| CODING OF SPECTRAL COEFFICIENTS OF AUDIO SIGNAL SPECTRUM | 2014 |
|
RU2638734C2 |
| AUDIO ENCODER AND DECODER USING FREQUENCY DOMAIN PROCESSOR WITH FULL-BAND GAP FILLING AND TIME DOMAIN PROCESSOR | 2015 |
|
RU2671997C2 |
| NOISE FILLING WITHOUT SIDE INFORMATION FOR CELP-LIKE CODERS | 2014 |
|
RU2648953C2 |
| AUDIO SIGNAL CODING AND DECODING DEVICE USING FREQUENCY-DOMAIN PROCESSOR, TIME-DOMAIN PROCESSOR AND CROSS-PROCESSOR FOR CONTINUOUS INITIALIZATION | 2015 |
|
RU2668397C2 |
