US 12,726,756 B2 · Impedance-tuned microphone tunnel

Abstract

An impedance-tuned microphone tunnel for an electronic device is disclosed. The impedance-tuned microphone tunnel includes a ring-like structure having a central opening positioned within a microphone tunnel of an electronic device. The central opening of the ring-like structure has a diameter that is smaller than diameters of other central openings within the microphone tunnel. The ring-like structure may be used to tune an impedance of the microphone tunnel by varying the diameter of the central opening. In this way, the impedance of the microphone tunnel may be tuned to a frequency response target to reduce a resonant peak of the microphone tunnel. The ring-like structure may be coated with a non-stick material, such as with polyethylene terephthalate (PET), biaxially orientated polyethylene terephthalate (BoPET), polyimide (PI), and the like.

Claims12

Dependent claims

An apparatus comprising:

a first layer of adhesive including a first central opening having a first diameter;
a second layer of adhesive including a second central opening having a second diameter, the second diameter being substantially equal to the first diameter;
a waterproof membrane positioned between the first layer of adhesive and the second layer of adhesive, the waterproof membrane having a first outer diameter, the first outer diameter being larger than the first diameter and the second diameter;
and
a ring-like structure including a third central opening having a third diameter, the ring-like structure disposed on the second layer of adhesive effective to couple the ring-like structure to the waterproof membrane, the third diameter being smaller than the first and second diameters.

2 more elements

Dependencies are inferred from the claim text.

Impedance-tuned microphone tunnel

Life of this patent

Impedance-tuned microphone tunnel

Life of this patent

Abstract

Claims12