Fuel Pump always humming

[MedMantle]

Hey guys. I drive a 2006 Yaris Hatch and for the past couple of months I hear this humming noise coming from where the fuel pump is situated. It is especially apparent when idling and it's volume is similar to the radiator fan which kinda makes the bit of sound deadening I have done pointless haha

I have discovered that the tone of the hum can be changed if I press the power window up when it is already fully closed (in other words I am straining the winder motor) so I don't know whether the noise from the fuel pump is electrical or mechanical?

Further than that my car drives fine but the noise is quite irritating

It sounds like the noise in this guys video (not a Yaris obviously but same noise https://www.youtube.com/watch?v=wwPPY1j_wZo )

Any help would be amaze **