sentences:  For example, with the microphone suspended, a slight tilt on the horizontal axis will cause the ribbon to 'sag' slightly, resulting in a noticeable boost in the lower-midrange frequencies.The ribbon is positioned inside the housing in such a way that fricatives may cause popping sounds, due to the explosion of air directly into the ribbon.A common solution to this problem has been to attach a pencil vertically across the front of the microphone.