| 摘要 |
FIELD: information technology. ^ SUBSTANCE: multichannel coder (10; 600) for processing input signals transmitted over N input channels is designed for generating corresponding output signals transmitted over M output channels together with supplementary parametric data; M and N are integers, where N>M. The coder (10; 600) includes a downconversion mixer for downconversion mixing of output signals to generate corresponding output signals. The coder also has an analyser for processing input signals to generate parametric data. The said parametric data describe mutual differences between N input signal channels to enable reconstruction of one or more than N input signal channels from N output signal channels during decoding. ^ EFFECT: high-efficiency data coding. ^ 23 cl, 3 dwg, 1 tbl |
