Mscohere-why would the coherence tends to 1 as nfft increases?

조회 수: 1(최근 30일)
Fede C 2018 London
Fede C 2018 London 2019년 4월 17일
Dear all,
Does anyone have a clue as to why -using mscohere- the coherence becomes exactly one for all frequencies if nfft is set to about 190-200. I know it's standard practice to set it to a number that is a power of 2. I tried with 1024, and all I got was a bunch of NaN. So I started with low numbers, and the coherence seem to have plausible numbers until I hit the 190 mark. I'm completely baffled.
Looking forward to hearing from you.




Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by