Info
이 질문은 마감되었습니다. 편집하거나 답변을 올리려면 질문을 다시 여십시오.
Extraction the magnitude responce point
조회 수: 1 (최근 30일)
이전 댓글 표시
I have this code matlab
>> w = -pi:pi/500:pi;
>> H = freqz(ones(1,10)/10,1,w);
>> subplot(211)
>> plot(w,abs(H))
>> grid; axis([-pi pi 0 1])
>> ylabel('Magnitude Response')
the design,
If xf=-1 : frequency point , xm : magnitude responce point.
How can i extract the magnitude responce point starting from the frequency point ?
댓글 수: 2
Meg Noah
2020년 1월 11일
I don't have that version or toolbox to get freqz. I think what you want is to interpolate the abs(H) values for the position of xf=01. It would be something like
xm = interp1(w,abs(H),xf,'pchip');
Sorry, I can't help more. Gotta save my allowance to purchase the newer matlab :-(.
Star Strider
2020년 1월 11일
Correct!
w = -pi:pi/500:pi;
H = freqz(ones(1,10)/10,1,w);
xm = interp1(w,abs(H),-1);
subplot(211)
plot(w,abs(H))
grid; axis([-pi pi 0 1])
hold on
plot(subplot(2,1,1), [min(w) -1],[1 1]*xm, '-r', [1 1 ]*(-1), [0 xm],'-r')
hold off
text(-1,0,'x_f', 'HorizontalAlignment','center', 'VerticalAlignment','top')
text(min(w),xm,'x_m', 'HorizontalAlignment','right', 'VerticalAlignment','middle')
ylabel('Magnitude Response')
producing:
The ‘xm’ value is about 0.2.
This is your idea, so I’m not posting it as an Answer.
답변 (0개)
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!