一些滤波器的设计\椭圆滤波器.m
................\且比雪夫2.m
................\冲激响应不变法设计滤波器.m
................\fir设计\fir_type1.m
................\.......\fir_type2.m
................\.......\ideal_lp.m
................\.......\freqz_m.m
................\.......\testfir_type1.m
................\.......\testfirtype2.m
................\.......\firdesign.m
................\fir设计
一些滤波器的设计