When I generate chirp by LabVIEW function, there occurs aliasing at specific sampling rate.

[AlbertTaewoong]

Hello there,

I'm an user of LabVIEW. 🙂

There is a strange thing at chirp function.

When I am going to generate chirp signal from 20 Hz to 20k Hz, I used to set the sampling rate as 44.1k Hz.

However, this time I have to measure the signal by NI9234, I need to set the sampling rate as 51.2k Hz.

In this situation, there occurs a strange happening!

When the sampling rate is 44.1k Hz, there is no aliasing when I am hearing.

However, when I set the sampling rate as 51.2k Hz, there is an aliasing!

I think you could re-generate by your LabVIEW as following code.

Is there any additional knowledge about singal processing?

Thank you for reading!