| 摘要 |
A real time coding transformation process is provided for musical signals in which a digital data sequence is entered into a buffer (1) and a second operation (2) is used to provide fast Fourier transformation. The spectral coefficients are grouped (3) into frequency bands defining the sensitivity curve of human hearing. Bit values (4) are assigned to each group, of which there are 46. A further process (5) quantises the spectral response on the basis of maximum amplitude values in each group. The information is multiplexed (6) to a multiprocessor unit. |
