Title:
電気音響変換器とそれを用いたこもり低減装置
Document Type and Number:
Japanese Patent JP5883364
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an electroacoustic transducer capable of reducing a muffled sensation and a sound of a self-voice, alleviating discomfort, and downsizing.SOLUTION: The electroacoustic transducer includes: sound output means 2 that outputs a sound into an external auditory meatus; sound collection means 3 composed of a piezoelectric polymeric film 15 made into electret for collecting sounds in the external auditory meatus and an impedance converter 16, wherein sound collection means 3 is disposed in a front chamber 6 of the sound output means 2. A diaphragm 7 of the sound output means 2 and a sound collection surface 15a of the piezoelectric polymeric film 15 of the sound collection means 3 are facing to each other. The sound output means 2 is a balanced armature type.
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Inventors:
Ito Taira
Application Number:
JP2012186017A
Publication Date:
March 15, 2016
Filing Date:
August 27, 2012
Export Citation:
Assignee:
Rion Co., Ltd.
International Classes:
H04R25/00; A61F11/00; G10K11/178
Domestic Patent References:
| JP2007235364A | ||||
| JP60127092U | ||||
| JP5333873A |
Other References:
Siegfried Bauer,Piezo-, pyro-, and ferroelectrets: soft transducer materials for electromechanical energy conversion,Dielectrics and Electrical Insulation, IEEE Transactions,米国,IEEE,2006年10月,Volume 13, Issue 5,page 953-962,[検索日 2016.1.25],URL,http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1714917
Attorney, Agent or Firm:
Yu Koyama
Tomiho Inamoto
Tomiho Inamoto