zpk function is missing
조회 수: 10 (최근 30일)
이전 댓글 표시
I am using MATLAB R2020b, and Signal processing toolbox Ver. 8.5. The "zpk" function does not work. I have already tried following recommendation but no success:
restoredefaultpath
rehash toolboxcache
Please help me.
댓글 수: 1
Fangjun Jiang
2021년 3월 31일
There is no zpk() function in Signal Processing Toolbox Ver 8.5. What is the error of zpk() in R2020b if you have the Control System Toolbox?
답변 (3개)
Fangjun Jiang
2021년 3월 29일
I believe zpk() requires Control System Toolbox. Check to see if you have it
ver control
Star Strider
2021년 3월 29일
In the Signal Processing Toolbox, the [z,p,k] output is optional for several filter design functions. Use those with (for example) zp2sos or others to design the filter to be used with filtfilt to filter a signal.
Ahmed Redissi
2021년 4월 14일
Hi,
While there is no "zpk" function in the Signal Processing Toolbox, there is a method called "zpk" of the object "digitalFilter". If you have the Signal Processing Toolbox, you can call the "zpk" function if the input is a digitalFilter object. Here's an example:
hpFilt = designfilt('highpassiir','FilterOrder',8, ...
'PassbandFrequency',75e3,'PassbandRipple',0.2, ...
'SampleRate',200e3);
[z,p,k] = zpk(hpFilt);
You can learn more about it here:
댓글 수: 0
참고 항목
카테고리
Help Center 및 File Exchange에서 Digital Filter Analysis에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!