Share your experience!
the setting to turn on the Noise cancelling in device is only for the noise cancelling headphones by sony that uses the in device noise canceling hardware.
If you want to use NC you have to use wired headphones, if you want to use the NC feature on your bluetooth headphones
http://www.sony.com/electronics/headband-headphones/mdr-zx770bn
it will work for music but not for calls.
Digital Noise Cancelling for less distractions
Digital Noise Cancelling reduces a variety of ambient noise when listening to music. A microphone built in to the headphones works with the digital noise cancelling engine to cut out unwanted sound. The headphones select the optimal mode (airplane, train, or office) based on an intelligent analysis of the environment. Activate or deactivate noise cancelling using the on/off switch.