Stop Cortana responding to "hey"?

When I play music, Cortana gets activated three or four times per hour by responding to what the algorithm interprets as "hey" (even if it's entirely instrumental music). I haven't yet seen a false activation interpretation of "hey Cortana". Is there any way to stop Cortana responding to "hey" whilst leaving "hey Cortana" unaffected?

Thanks for your response but I do not wish to disable 'Hey Cortana'. Let me clarify:

I want to disable the response to 'hey'.
I do not want to disable the response to 'hey Cortana'.

Incidentally I just tried testing response to 'hey' and there isn't one, but Cortana continues to be activated by music and says 'hey' in the box where it would normally say 'hey Cortana'.

cereberus said:

Then train it to recognise only you - say it in something with a strong accent (Scouser, Brummie, Doric etc).

I already did that. Are the trainings additive? I don't see how using a strong fake accent will stop the program from finding that pattern in music. All it will do is make it respond to a slightly different pattern of music. The underlying problem remains that the computer is responding to sounds that the computer itself generated. The problem remains that a single syllable ('hey') is enough to activate Cortana when I want to limit it to more complex patterns ('hey Cortana').

dalchina said:

Did you see my suggestion about training it?
If I just say Hey - nothing happens. Nor if I say 'Hey, you'.
You could try disabling your microphone whilst playing music...
I've not seen Cortana be triggered when I play music... is yours very loud?

I already did that. Are the trainings additive?

I tried testing response to 'hey' and there isn't one, but Cortana continues to be activated by music and says 'hey' in the box where it would normally say 'hey Cortana'.

I don't really want to unplug my microphone; plugging it in (or disabling and re-enabling it in settings) to use Cortana is more effort than just not using Cortana at all and doing things manually. I wouldn't say my music is particularly loud but the speakers and microphone are on the same desk.

dalchina said:

- which box exactly? The one I showed above? And what's your build?
(Windows key + R, winver).
Thanks

My build is 15063.250

The box I'm referring to is indicated in the following screenshot:

http://imgur.com/PxibaHN.png