Ben shu chan shu le li san xi tong de xing zhi, Li san xin hao de ge zhong bian huan;Shen ru jiang jie le DFT de yuan li ji qi xing zhi, Tao lun le yong DFT qiu xian xing juan ji he jin xing fen duan juan ji de fang fa;Chan shu le ge zhong FFT suan fa;Lun shu le IIR shu zi lü bo qi de yuan li he she ji fang fa deng nei rong.