Menu

Discussion Forum

New Discussion
Filter

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Unexpected envelop around a sine wave

Posted Jan 16, 2018, 10:34 a.m. EST Parameters, Variables, & Functions Version 5.3a 2 Replies

Aishvarya kumar Jain
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hello Everyone,

I am trying to build a sine wave through analytical functions, but when I am increasing the frequency, I see an unexpected envelop around the signal.

If I use following formulae, then I get the signal as shown in attachment 1: sin(2x3.14x1000[Hz]xt)

And if I use following, what I get is shown in attachment 2: sin(2xpix1000[Hz]xt)

Can anyone explain me why I am getting such behaviour.

Thank you

2 Replies Last Post Jan 23, 2018, 9:24 a.m. EST
Edgar J. Kaiser Certified Consultant
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 7 years ago Jan 16, 2018, 4:31 p.m. EST

This is a visualization artifact. The plot is undersampling the curve.

-------------------
Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
This is a visualization artifact. The plot is undersampling the curve.
Aishvarya kumar Jain
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 7 years ago Jan 23, 2018, 9:24 a.m. EST

Thanks. Didnt know even such thing can also happen.

Regards, Aishvarya

Thanks. Didnt know even such thing can also happen. Regards, Aishvarya

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content