Title:
ELECTROACOUSTIC TRANSDUCER
Document Type and Number:
WIPO Patent Application WO/2020/189129
Kind Code:
A1
Abstract:
Provided is an electroacoustic transducer having adjustable frequency properties. In an electrostatic electroacoustic transducer (1), an oscillator (10) is disposed between a fixed pole (20U) and a fixed pole (20L). The periphery of the oscillator (10) is sandwiched between an annular raised part (21U) and an annular raised part (21L) around the peripheries of the two fixed poles. The oscillator (10) is sandwiched between cylindrical raised parts (23U_1–23U_6) and (24U_1–24U_6) and cylindrical raised parts (23L_1–23L_6) and (24L_1–24L_6), all located near the centers of the two fixed poles. The space between the two fixed poles is divided into a first region (31) to the inside of the cylindrical raised parts (24U_1–24U_6) and (24L_1–24L_6), and second regions (32) to the outside thereof. The distance between raised parts, as well as the gap between the fixed poles, is shorter in the first region (31) than in the second region. The frequency properties of the electrostatic electroacoustic transducer (1) can be adjusted by changing the ratio of the areas of the first region (31) and the second region (32).
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Inventors:
NORO MASAO (JP)
Application Number:
PCT/JP2020/005992
Publication Date:
September 24, 2020
Filing Date:
February 17, 2020
Export Citation:
Assignee:
YAMAHA CORP (JP)
International Classes:
H04R19/01; H04R19/02; H04R19/04
Foreign References:
| JP2007515090A | 2007-06-07 |
Attorney, Agent or Firm:
SHIN-EI PATENT FIRM, P.C. (JP)
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