JPS6117672Y2 - - Google Patents
Info
- Publication number
- JPS6117672Y2 JPS6117672Y2 JP13939079U JP13939079U JPS6117672Y2 JP S6117672 Y2 JPS6117672 Y2 JP S6117672Y2 JP 13939079 U JP13939079 U JP 13939079U JP 13939079 U JP13939079 U JP 13939079U JP S6117672 Y2 JPS6117672 Y2 JP S6117672Y2
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- output
- variable
- frequency
- phase shift
- 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.)
- Expired
Links
- 230000010363 phase shift Effects 0.000 claims description 23
- 238000010586 diagram Methods 0.000 description 9
- 230000035945 sensitivity Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13939079U JPS6117672Y2 (enExample) | 1979-10-08 | 1979-10-08 | |
| US06/185,516 US4354059A (en) | 1979-09-11 | 1980-09-09 | Variable-directivity microphone device |
| DE3033985A DE3033985C2 (de) | 1979-09-11 | 1980-09-10 | Mikrofoneinrichtung mit veränderbarer Richtwirkung |
| GB8029371A GB2062406B (en) | 1979-09-11 | 1980-09-11 | Variable-directivity microphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13939079U JPS6117672Y2 (enExample) | 1979-10-08 | 1979-10-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5656289U JPS5656289U (enExample) | 1981-05-15 |
| JPS6117672Y2 true JPS6117672Y2 (enExample) | 1986-05-29 |
Family
ID=29370729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13939079U Expired JPS6117672Y2 (enExample) | 1979-09-11 | 1979-10-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6117672Y2 (enExample) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2883082B2 (ja) * | 1986-05-29 | 1999-04-19 | 三菱自動車工業株式会社 | ハンドフリー自動車電話用マイクロホン装置 |
| JP5698592B2 (ja) * | 2011-04-20 | 2015-04-08 | 株式会社オーディオテクニカ | 2次音圧傾度型エレクトレットコンデンサマイクロホン |
-
1979
- 1979-10-08 JP JP13939079U patent/JPS6117672Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5656289U (enExample) | 1981-05-15 |
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