Study of wind noise in the noise-cancelling earphones

In this study, we discuss about a problem of a noise canceling function on an earphone. In general, the noise canceling function reduces unwanted ambient sounds using active noise controls. However, in windy condition, the noise canceling control makes a wind noise larger. To solve this problem, we study a root cause of the increasing wind noise by the noise canceling function. Experimental results show that differences of transfer characteristics between a normal noise and the wind noise is the root cause of this problem.