notch filter

노치필터 BRF(Band Rejection Filter), BSF(Band Stop)

THD+N 계산하기 위해 노치 필터를 적용한다고 어디서 본 거 같은데..

 

thd+n

[링크 : https://kr.mathworks.com/help/audio/ug/thd-n-measurement-with-tone-tracking.html]

 

band rejection filter / band stop filter

q값 = 중심주파수 / 대역폭

-3db 100Khz / 100hz = 100 (Q)

[링크 : https://m.blog.naver.com/dejc2000/221541137592]

 

Q값이 커질수록 selective한 필터

[링크 : https://blog.naver.com/85mighty/221153177677]

 

notch python

[링크 : https://hadaney.tistory.com/m/7]