Yes, passive in music and active in the calls. If you use the earbuds when not speaking on the phone or listening to music as such they cancel noise by excellent full fit design. When you are speaking on the phone, the earbuds´ active ENP noise cancellation starts to work. And if you are listening to music the passive DSP noise cancellation adapts to the surroundings. In addition, the earbuds have a program with the learning function to improve noise cancellation when in use.