短语词组短語digital l comb filter 數字式多通帶濾波器DCF digital comb filter 數字梳狀濾波器dynamic digital comb filter 動態數字梳狀濾波器DCF F digital comb filter 數字梳狀濾波器three -dimensional digital comb filter 三維數碼梳狀濾波器 返回 digital comb filter