| 摘要 |
<p>A method and system for coding audio signals in a multi-channel sound system, wherein a plurality of MDCT units (30) are used to reduce the audio signals for providing a plurality of MDCT coefficients (110). The MDCT coefficient (110) are quantized by quantization units (40) according to the masking threshold calculated from a psychoacoustic model (50) and a plurality of INT (integer-to-integer) DCT (60) are used to remove the cross-channel redundancy in the quantized MDCT coefficients. The output from the INT-DCT modules is Huffman coded and written to a bitstream for transmission or storage.</p> |
