Earphone with active suppression of ambient noise

[0014]Loudspeaker systems that can decrease or eliminate time delay between a microphone and a loudspeaker are described. For example, the microphone, through which ambient noise may be detected for further processing and consideration for the loudspeaker, may be formed directly on the membrane or the diaphragm of the loudspeaker of the earphone shell.

[0015]In order not to interfere with the quality of the loudspeaker by changes in mechanical properties of the diaphragm, the microphone may be designed as lightweight as possible. For example, the microphone may have a weight that is substantially equivalent to the “missing” portion of the membrane of the loudspeaker. For instance, the membrane may have an opening, and the microphone may be disposed within the opening. The microphone may have a weight that is about the same as or less than a weight of a portion of the membrane that would occupy the opening. For example, the microphone may have a density less than a density of the membran