| 摘要 |
An evaluation apparatus for obtaining an evaluation value of a signal read from an optical recording medium includes a reading device reading a signal recorded on the optical recording medium, an edge position detection device detecting edge positions of the read signal acquired by the reading device, a frequency distribution table generation device generating a frequency distribution table of the edge positions on the basis of accumulation result of information of the edge positions detected by the edge position detection device, and a first calculation device calculating a T degree value represented as <?in-line-formulae description="In-line Formulae" end="lead"?>[{Sigmafix(xi-A)(2m+1)}/F]{1/(2m+1)} Formula 1<?in-line-formulae description="In-line Formulae" end="tail"?> (wherein m is a natural number excluding zero) wherein, in the frequency distribution table generated by the frequency distribution table generation device, xi, fi, F, and A represent the value of each of the classes, the frequency of each of the classes, the sum of the frequencies, and the weighted average value, respectively.
|
