Microphone port for acoustic suppression
A transducer port assembly comprising: a frame defining an acoustic chamber having an opening to an ambient environment and one or more interior sloping surfaces coupled to an acoustic port of a transducer; an acoustic mesh coupled to the opening to the ambient environment; and a blocking member coupled to the acoustic mesh to acoustically close a portion of the acoustic mesh.
1 . A transducer port assembly comprising:
a frame defining an acoustic chamber having an opening to an ambient environment and one or more interior sloping surfaces coupled to an acoustic port of a transducer and the one or more interior sloping surfaces defining a bottom portion of the acoustic chamber such that the acoustic chamber comprises a greater height near a side wall than near the acoustic port;
an acoustic mesh coupled to the opening to the ambient environment; and
a blocking member coupled to the acoustic mesh to acoustically close a portion of the acoustic mesh.
2 . The transducer port assembly of claim 1 wherein the opening to the ambient environment is larger than the acoustic port of the transducer.
3 . The transducer port assembly of claim 1 wherein at least one interior sloping surface of the one or more interior sloping surfaces is inclined upwards when moving in a direction from a side wall of the frame defining the opening to the acoustic port.
4 . The transducer port assembly of claim 1 wherein the side wall surrounds the one or more interior sloping surfaces.
5 . The transducer port assembly of claim 1 wherein an angle of a slope defined by the one or more interior sloping surfaces is between zero degrees and ninety degrees.
6 . The transducer port assembly of claim 1 wherein the acoustic port comprises a rectangular shape and an interior sloping surface of the one or more interior sloping surfaces extends from each side of the rectangular shape.
7 . The transducer port assembly of claim 1 wherein the acoustic port comprises a circular shape and the one or more interior sloping surfaces entirely surround the circular shape.
8 . The transducer port assembly of claim 1 wherein the blocking member acoustically closes from ten percent to ninety percent of the acoustic mesh.
9 . The transducer port assembly of claim 1 wherein the blocking member is coupled to a portion of the acoustic mesh with a highest coherence for wind noise.
10 . The transducer port assembly of claim 1 wherein the blocking member is coupled to a center of the acoustic mesh and aligned over the acoustic port.
11 . The transducer port assembly of claim 1 wherein the transducer comprises a microphone.
12 . A portable electronic device comprising:
an enclosure defining an interior chamber separated from an ambient environment surrounding the enclosure;
a frame defining an acoustic chamber having an opening to the ambient environment and one or more interior sloping surfaces coupled to an acoustic port of a transducer positioned within the interior chamber of the enclosure, and the one or more interior sloping surfaces define a bottom portion of the acoustic chamber and are inclined upwards when moving in a direction from a side wall of the frame defining the opening to the acoustic port;
an acoustic mesh coupled to the opening to the ambient environment; and
a blocking member coupled to the acoustic mesh to acoustically close a portion of the acoustic mesh.
13 . The portable electronic device of claim 12 wherein the opening to the ambient environment extends through the enclosure.
14 . The portable electronic device of claim 12 wherein the side wall extends from the opening to the one or more interior sloping surfaces, and a height of the acoustic chamber near the side wall is greater than a height of the acoustic chamber near the acoustic port.
15 . The portable electronic device of claim 12 wherein an angle of a slope defined by the one or more interior sloping surfaces is between zero degrees and forty-five degrees.
16 . The portable electronic device of claim 12 wherein the acoustic port is entirely surrounded by the one or more interior sloping surfaces.
17 . The portable electronic device of claim 12 wherein the blocking member comprises a metal stiffener coupled to a center of the acoustic mesh and aligned over the acoustic port.
18 . An earbud comprising:
an earbud enclosure defining an interior chamber separated from an ambient environment surrounding the earbud enclosure;
a frame defining an acoustic chamber having an opening to the ambient environment and one or more interior sloping surfaces defining a bottom surface of the acoustic chamber having a frustoconical shape surrounding an acoustic port of a microphone positioned within the interior chamber of the earbud enclosure;
an acoustic mesh coupled to the opening to the ambient environment; and
a blocking member coupled to the acoustic mesh to acoustically close a center portion of the acoustic mesh.
19 . The earbud of claim 18 wherein at least one interior sloping surface of the one or more interior sloping surfaces is a flat surface inclined upwards when moving in a direction from a side wall of the frame defining the opening to the acoustic port.
20 . The earbud of claim 18 wherein at least two interior sloping surfaces of the one or more interior sloping surfaces extend in different directions from the acoustic port to a side wall of the frame.
21 . The earbud of claim 18 wherein the blocking member comprises a metal stiffener coupled to the center of the acoustic mesh.