What is the annoying 'chirp' and how do I stop it?

In station I am getting a descending tone chirp. I can’t tell what is triggering it or if its a warning for something… A water drop chirp that is very annoying. Anyone hear it and know what it is from?

Did you check the audio-settings ?

Do you move your mouse cursor over a list, like items, station guests, chat user list? That causes a chirping sound.
You have to lower the volume for secondary UI clicks or something to get rid of that, but that also lowers the volume for useful ui sounds in that category, like the dscan gong. CCP increased the chirp volume a lot in the last big patch and no one knows why, least of all them.

REDNES

Your wireless headset may need to be charged.