| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that, in a window processor which reproduces data coded in a frame unit of an MPEG2(moving picture expert group) audio or the like by making frames adjacent each other to be partially overlapped, when the order of frames is disordered, there is the case where sound pressure levels of the overlapped parts become not to be constant and tone quality is deteriorated. SOLUTION: In a device which is constituted of an input device 101 for supplying a data group including window function information, a separating and dividing device 102 which divides the data group into two equal parts and which separates the window function information, a window selecting device 103 for selecting a window function corresponding to the window function information, a window processor 104 for integrating the window functions and the data groups, a window function table 105 for holding values of the window functions, a storage device for 106 storing the data groups and a superposition device 107 for adding two data groups, the tone quality can be prevented from being deteriorated by performing a window processing while selecting a window function in which sound pressure levels become constant in the window selecting device 103. |
