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US 5,844,984 AGranted
Two-way communications earset with filter
AssigneePan Communications, Inc.
InventorsNoboru Yamaguchi, Masao Konomi
Life of this patent
Estimating the term…
Abstract
A two way voice communications earset which is situated in the ear of the user and which includes a filter in an audio signal loop coupling a microphone and a speaker of the earset.
Claims16
A two-way simultaneous voice transmitting and receiving device comprising:
- a case comprising:
- an enlarged portion adapted to be placed in an ear auricle of a user, the enlarged portion including an insertion portion adapted to be inserted in an ear canal of the user, and
- a hollow portion extending in a direction away from the ear, wherein the enlarged portion houses a speaker with an output led directly to the ear canal of the user and the hollow portion houses a microphone with a sole audio inlet comprising a hole, and wherein said case is configured to offset said hole of said sole audio inlet relatively far from the mouth of the user;
- and
- filter means, comprising sound absorbing material having substantial thickness positioned in the hollow portion between the hole of the sole audio inlet and a diaphragm of the microphone, for reducing feedback between the speaker and the microphone.
2 more elements
A two-way simultaneous voice transmitting and receiving device comprising:
- a case comprising:
- enlarged portion adapted to be placed in an ear auricle of a user, the enlarged portion including an insertion portion adapted to be inserted in an ear canal of the user, and
- a hollow portion extending in a direction away from the ear, wherein the enlarged portion houses a speaker with an output led directly to the ear canal of the user and wherein the hollow portion houses a microphone with a sole audio inlet comprising a hole;
- and
- filter means, comprising fibrous sound absorbing material and having substantial thickness positioned in the hollow portion between the hole of the sole audio inlet and a diaphragm of the microphone, for reducing feedback between the speaker and the microphone,
- wherein the hole of the sole audio inlet and the sound absorbing material provide sound directivity to voice signals of the user, the sound absorbing material having an axis centered on the hole and being elongated along the axis.
3 more elements
A two-way simultaneous voice transmitting and receiving device comprising:
- a case comprising:
- an enlarged portion adapted to be placed in an ear auricle of a user, the enlarged portion including an insertion portion adapted to be inserted in an ear canal of the user, and
- a hollow portion extending in a direction away from the ear, wherein the enlarged portion houses a speaker with an output led directly to the car canal of the user and the hollow portion houses a microphone with a sole audio inlet comprising a hole, said case being configured to offset said hole of said sole audio inlet relatively far from the mouth of the user;
- and
- filter means, comprising fibrous sound absorbing material having substantial thickness and positioned in the hollow portion between the hole of the sole audio inlet and a diaphragm of the microphone, for reducing feedback between the speaker and the microphone,
- wherein the hole of the sole audio inlet and the sound absorbing material provide sound directivity to voice signals of the user, the sound absorbing material having an axis centered on the hole and being elongated along the axis.
3 more elements
Dependencies are inferred from the claim text.