发明名称 Method of identifying digital audio signal format
摘要 A method of identifying file format, converting file from assumed format and bit ordering to user-definable format, dividing file into blocks, determining frequencies of occurrence in blocks, creating first set of frequencies of occurrence less than and equal to most frequently occurring integer, creating second set of frequencies of occurrence greater than the most frequently occurring integer, creating third set of differences in first sets, creating fourth set of differences in second sets, replacing third and fourth sets with polarity indicators, summing polarity indicators, determining sum percentages, pairing percentages, determining pairing maximum number, determining statistics, determining maximum of statistics, assigning result to converted file, selecting another format and bit ordering and returning to third step, identifying converted file with maximum statistic, and determining format and bit ordering of file to be that of assumed format associated with converted file identified in last step.
申请公布号 US7620469(B1) 申请公布日期 2009.11.17
申请号 US20060489804 申请日期 2006.07.17
申请人 THE UNITED STATES OF AMERICA AS REPRESENTED BY THE DIRECTOR OF THE NATIONAL SECURITY AGENCY 发明人 CUSMARIU ADOLF
分类号 G06F17/00 主分类号 G06F17/00
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