| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a compression analyzing device and a converting device for a time-series signal that can perform efficient irreversible compression of the time-series signal and analyze the compression precision of compressed data. <P>SOLUTION: After values of respective samples are converted into predicted error values by linearly predicting the time-series signal consisting of a time-series sample array, high-order bits and low-order bits of the respective samples are separated; and high-order bit components are encoded with variable length and low-order bit components are encoded with fixed length to perform compression. The data amount of the low-order bit components is estimated as a quantization noise component and calculated and the data amount of other data generated in the compressing process is calculated; and the ratio to the data amount of the original time-series signal is calculated and the data ratios before and after the compression are comparatively displayed. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
