| 摘要 |
<p>One or more largest components are extracted from each of a plurality of blocks obtained by finely dividing an input signal with respect to time and frequency. A bit distribution ratio to each block is determined on the basis of the difference in magnitude between the remaining components and the extracted components described above. The component of each block is quantized on the basis of the bit distribution ratio described above the generate compressed data. In this way, the present invention can accomplish acoustically desirable bit distribution and hence, can execute highly efficiently compression and expansion with acoustically high tone quality. Accordingly, a data recording medium for recording data compressed by the digital signal processor of the present invention can give a higher memory capacity than prior art apparatuses.</p> |
