FIELD: physics.
SUBSTANCE: invention relates to means of encoding and decoding a multichannel signal. Inter-channel correlation values between each pair of at least three channels are calculated at the first iterative step. Selecting, at the first iteration step, a pair with the highest value or value higher than the threshold value. Selected pair is processed using a multichannel processing operation to extract the first multichannel parameters for the selected pair and to extract the first processed channels. Performing calculation, selection and processing on the second iterative step using unprocessed channels from at least three channels and processed channels to extract second multichannel parameters and second processed channels. Selected pair of the first iterative step is not selected at the second iterative step and, if applicable, at any further iterative steps. Channels obtained as a result of iterative processing are coded to obtain encoded channels.
EFFECT: technical result consists in improvement of efficiency of encoding and decoding of audio signal.
26 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE AND METHOD FOR STEREOPHONIC FILLING IN MULTICHANNEL CODING | 2017 |
|
RU2710949C1 |
| ALMOST TRANSPARENT OR TRANSPARENT MULTICHANNEL CODER/DECODER SCHEME | 2005 |
|
RU2388176C2 |
| COMPLEX-TRANSFORM CHANNEL CODING WITH EXTENDED-BAND FREQUENCY CODING | 2007 |
|
RU2422987C2 |
| COMPLEX TRANSFORMATION CHANNEL CODING WITH BROADBAND FREQUENCY CODING | 2007 |
|
RU2555221C2 |
| ENCODER, MULTI-SIGNAL DECODER AND CORRESPONDING METHODS USING SIGNAL WHITENING OR SIGNAL POST-PROCESSING | 2019 |
|
RU2769788C1 |
| ADAPTIVE RESIDUAL AUDIO CODING | 2006 |
|
RU2380766C2 |
| DEVICE AND METHOD FOR GENERATING ENCODED STEREO SIGNAL OF AUDIO PART OR STREAM OF AUDIO DATA | 2006 |
|
RU2376726C2 |
| MULTICHANNEL ENCODER | 2005 |
|
RU2382419C2 |
| STEREOPHONIC COMPATIBLE MULTICHANNEL SOUND ENCODING | 2005 |
|
RU2381570C2 |
| GENERATION OF MULTICHANNEL AUDIO SIGNALS | 2006 |
|
RU2417458C2 |
