JPS60172495U - electrostatic transmitter - Google Patents
electrostatic transmitterInfo
- Publication number
- JPS60172495U JPS60172495U JP6111484U JP6111484U JPS60172495U JP S60172495 U JPS60172495 U JP S60172495U JP 6111484 U JP6111484 U JP 6111484U JP 6111484 U JP6111484 U JP 6111484U JP S60172495 U JPS60172495 U JP S60172495U
- Authority
- JP
- Japan
- Prior art keywords
- closed
- face
- lid body
- rear lid
- electrostatic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Telephone Set Structure (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はこの考案の静電形送話器の実施例の要部の構成
を示す断面原理図、第２図はこの考案の静電形送話器に
使用される双指向性エレクトレットマイクロホンユニッ
トの構成を示す図、第３図はこの考案の静電形送話器の
実施例の送話周波数特性を示す図、第４図は双指向性エ
レクトレットマイクロホンユニット単体の送話周波数特
性を示す図、第５図は双指向性エレクトレットマイクロ
ホンユニット単体の指向性特性を示す図、第６図はこの
考案の静電形送話器の実施例の送話周波数特性を示す図
、第７図はこの考案の静電形送話器の実施例における第
１の前室の容量をパラメータとした場合の送話周波数特
性を示す図、第８図はこの考案の静電形送話器の実施例
における第２の前室の容量をパラメータとして送話周波
数特性を示す図、第９図はこの考案の静電形送話器の実
施例における第２の通孔の孔径をパラメータとした送話
周波数特性を示す図、第１０図はこの考案の静電形送話
器の実施例における第１及び第２のクロスと送話周波数
特性との関係を示す図、第１１図はこの考案の静電形送
話器の実施例における第１のクロスと送話周波数特性と
の関係を示す図、第１２図はこの考案の静電形送話器の
実施例における音圧の回り込み状態を示す原理図、第１
３図Ａ乃至第１３図Ｅはこの考案の静電形送話器の実施
例における静電破壊試験の結果を示す図、第１４図は送
話周波数特性の許容範囲を示す図、第１５図及び第１７
図は従来提案されている静電形送 ゛話器の要部の
構成を示す図、第１６図及び第１８図はそれぞれ第１５
図及び第１７図の構成の静電形送話器における送話周波
数特性を示す図である。
２４：閉塞面、２５：背面蓋体、２６：前面蓋体、２７
：閉端面、３１：環状凹部、３２：リブ、３３：第１の
通孔、３５：段部、３６：双指向性エレクトレットコン
デンサマイクロホンユニット、４１：カプセル、４３：
振動板、４４：背極板、４５：背極ホルダ、４６：プリ
ント基板、４７：ＩＣ回路、５０：開孔、５１：開孔、
５３：クロス、５５：第２の通孔、５６：第１のクロス
、５７：第２のクロス、６０：取付体、６１：第１の容
積室、６２：第２の容積室。
１１
１９ １３ ７／
□−４−一一
００
／−ｍ−ｔ−１
ノ ■ ＼
３００ １０００ ２５００
５０００− （Ｈｘ ）Figure 1 is a cross-sectional principle diagram showing the configuration of the main parts of an embodiment of the electrostatic transmitter of this invention, and Figure 2 is a bidirectional electret microphone unit used in the electrostatic transmitter of this invention. FIG. 3 is a diagram showing the transmission frequency characteristics of an embodiment of the electrostatic transmitter of this invention, and FIG. 4 is a diagram showing the transmission frequency characteristics of a single bidirectional electret microphone unit. , Fig. 5 is a diagram showing the directivity characteristics of a single figure-directional electret microphone unit, Fig. 6 is a diagram showing the transmission frequency characteristics of an embodiment of the electrostatic transmitter of this invention, and Fig. 7 is a diagram showing the transmission frequency characteristics of the electrostatic transmitter of this invention. Figure 8 shows the transmission frequency characteristics when the capacity of the first front chamber is taken as a parameter in the embodiment of the electrostatic transmitter of the invention. A diagram showing the transmission frequency characteristics using the capacity of the second front chamber as a parameter, and FIG. 9 shows the transmission frequency characteristics using the diameter of the second through hole as a parameter in an embodiment of the electrostatic transmitter of this invention. FIG. 10 is a diagram showing the relationship between the first and second crosses and transmission frequency characteristics in an embodiment of the electrostatic type transmitter of this invention, and FIG. FIG. 12 is a diagram showing the relationship between the first cross and the transmission frequency characteristic in the embodiment of the transmitter, and FIG. 12 is a principle diagram showing the wraparound state of sound pressure in the embodiment of the electrostatic transmitter of this invention. 1st
Figures 3A to 13E are diagrams showing the results of electrostatic breakdown tests on embodiments of the electrostatic transmitter of this invention, Figure 14 is a diagram showing the permissible range of transmission frequency characteristics, and Figure 15. and the 17th
The figure shows the configuration of the main parts of a conventionally proposed electrostatic transmitter, and Figures 16 and 18 are respectively 15
FIG. 18 is a diagram showing the transmission frequency characteristics of the electrostatic transmitter having the configuration shown in FIG. 17; 24: Closed surface, 25: Rear lid, 26: Front lid, 27
: closed end surface, 31: annular recess, 32: rib, 33: first through hole, 35: step, 36: bidirectional electret condenser microphone unit, 41: capsule, 43:
diaphragm, 44: back electrode plate, 45: back electrode holder, 46: printed circuit board, 47: IC circuit, 50: opening, 51: opening,
53: cross, 55: second through hole, 56: first cross, 57: second cross, 60: attachment body, 61: first volume chamber, 62: second volume chamber. 11 19 13 7/ □-4-1100 /-m-t-1 ノ ■ \ 300 1000 2500
5000- (Hx)
Claims (1)
で前記閉塞面側に凸状に閉端面を突出させて筒状の前面
蓋体が配設され、この前面蓋体の閉端面のほぼ中央に前
記背面蓋体側に通じる第１の通孔が形成され、この第１
の通孔を囲んで前記前面蓋体の閉端面に環状部が前記閉
塞面側に突出形成され、この環状部の突出側の開放面を
塞いで双指向性エレクトレットマイクロホンユニットが
固定され、前記前面蓋体の板面の周縁側に前記背面蓋体
側に通じる第２の通孔が形成されてなることを特徴とす
る静電形送話器。 ゛A cylindrical front lid body is disposed such that one end face is a closed face and the open face of the cylindrical rear lid body is closed, and the closed end face protrudes convexly toward the closed face side. A first through hole communicating with the rear lid body side is formed approximately in the center of the closed end surface, and this first through hole communicates with the rear lid body side.
An annular portion is formed on the closed end surface of the front lid body to surround the through hole and protrude toward the closed surface side, and a bidirectional electret microphone unit is fixed by closing the open surface on the protruding side of the annular portion. An electrostatic transmitter characterized in that a second through hole communicating with the rear lid is formed on the peripheral edge side of the plate surface of the lid.゛
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6111484U JPS60172495U (en) | 1984-04-25 | 1984-04-25 | electrostatic transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6111484U JPS60172495U (en) | 1984-04-25 | 1984-04-25 | electrostatic transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60172495U true JPS60172495U (en) | 1985-11-15 |
| JPH0129897Y2 JPH0129897Y2 (en) | 1989-09-12 |
Family
ID=30589086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6111484U Granted JPS60172495U (en) | 1984-04-25 | 1984-04-25 | electrostatic transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60172495U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008093360A (en) * | 2006-10-16 | 2008-04-24 | Nippon Seimitsu Sokki Kk | Capacitor microphone, microphone unit, and manometer |
| EP1978779A2 (en) * | 2007-04-04 | 2008-10-08 | Funai Electric Advanced Applied Technology Research Institute Inc. | Microphone unit, close-talking voice input device, information processing system, and method of manufacturing microphone unit |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5022261B2 (en) * | 2008-02-08 | 2012-09-12 | 船井電機株式会社 | Microphone unit |
| JP4971220B2 (en) * | 2008-02-29 | 2012-07-11 | 小島プレス工業株式会社 | In-vehicle microphone device |
-
1984
- 1984-04-25 JP JP6111484U patent/JPS60172495U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008093360A (en) * | 2006-10-16 | 2008-04-24 | Nippon Seimitsu Sokki Kk | Capacitor microphone, microphone unit, and manometer |
| JP4520446B2 (en) * | 2006-10-16 | 2010-08-04 | 日本精密測器株式会社 | Condenser microphone, microphone unit, and blood pressure monitor |
| EP1978779A2 (en) * | 2007-04-04 | 2008-10-08 | Funai Electric Advanced Applied Technology Research Institute Inc. | Microphone unit, close-talking voice input device, information processing system, and method of manufacturing microphone unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0129897Y2 (en) | 1989-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS60172495U (en) | electrostatic transmitter | |
| JPS5850578U (en) | speaker cabinet | |
| JPS6057293U (en) | speaker unit | |
| JPS58104078U (en) | earphone | |
| JPS5813795U (en) | small microphone | |
| JPS5950183U (en) | headphone | |
| JPS5885890U (en) | electret condenser microphone | |
| JPS6082893U (en) | speaker | |
| JPS59177288U (en) | speaker device | |
| JPS58147379U (en) | telephone receiver | |
| JPS59129298U (en) | condenser microphone | |
| JPS58152089U (en) | Braking structure of speaker vibration system | |
| JPS6298355U (en) | ||
| JPS6024901U (en) | Accumulator | |
| JPS5963584U (en) | microphone | |
| JPS58596U (en) | microphone | |
| JPS6066191U (en) | Bass speaker device | |
| JPS60144393U (en) | speaker | |
| JPS58188937U (en) | gas-filled switch | |
| JPS58127793U (en) | Cone speaker center cap mounting structure | |
| JPS60112193U (en) | microphone | |
| JPS59119684U (en) | Tweeter speaker mounting device | |
| JPS58172294U (en) | dynamic microphone | |
| JPS6126355U (en) | Telephone transmitter unit mounting structure | |
| JPS606394U (en) | speaker device |