You can change the activation phrase to something other than what appears to be causing the problem. Delete your current phrase that is causing the problem and being confused with background noise. I use the phrases Cancel, Disregard, and abort or double phrase like, cancel order or press backspace. You can also edit and teach your current phrase so it may be clearer to the computer. Double click on your current activation phrase and in the popup, click the "say" button then say the phrase then press stop. You may find that will so the trick. :)