Invention Grant
- Patent Title: Audio earpiece for wideband telephone handsets
- Patent Title (中): 用于宽带电话手机的音频耳机
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Application No.: US10460449Application Date: 2003-06-11
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Publication No.: US07352859B2Publication Date: 2008-04-01
- Inventor: Stephane Dedieu , Hans Beisner , Kiichiro Tanaka , Philippe Moquin
- Applicant: Stephane Dedieu , Hans Beisner , Kiichiro Tanaka , Philippe Moquin
- Applicant Address: CA
- Assignee: Mitel Networks Corporation
- Current Assignee: Mitel Networks Corporation
- Current Assignee Address: CA
- Agency: Jones Day
- Priority: GB0213732.1 20020614
- Main IPC: H04M1/00
- IPC: H04M1/00 ; H04M9/00

Abstract:
A method of manufacturing a telephony earpiece is provided. The method includes providing a speaker diaphragm and constraining the speaker diaphragm using a cap to provide a thin cavity between the cap and the diaphragm. The first resonance peak of the diaphragm/cavity system is damped by a first slow leak in the cap. The frequency response is built up using a rear resonator in the cap and the high frequency end response is enhanced using a front resonator on an opposite side of said diaphragm as said cap. Positioning of these resonator holes is an important factor. The earpiece is tuned using a second leak to adjust amplitude of low frequency end response.
Public/Granted literature
- US20030231764A1 Audio earpiece for wideband telephone handsets Public/Granted day:2003-12-18
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