JPS6125280B2 - - Google Patents
Info
- Publication number
- JPS6125280B2 JPS6125280B2 JP53098077A JP9807778A JPS6125280B2 JP S6125280 B2 JPS6125280 B2 JP S6125280B2 JP 53098077 A JP53098077 A JP 53098077A JP 9807778 A JP9807778 A JP 9807778A JP S6125280 B2 JPS6125280 B2 JP S6125280B2
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- speaker
- signal
- supplied
- amplifier
- 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
- 238000013459 approach Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 description 13
- 239000003990 capacitor Substances 0.000 description 9
- 238000001514 detection method Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 5
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9807778A JPS5525258A (en) | 1978-08-11 | 1978-08-11 | Acoustic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9807778A JPS5525258A (en) | 1978-08-11 | 1978-08-11 | Acoustic apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5525258A JPS5525258A (en) | 1980-02-22 |
| JPS6125280B2 true JPS6125280B2 (US20100056889A1-20100304-C00004.png) | 1986-06-14 |
Family
ID=14210275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9807778A Granted JPS5525258A (en) | 1978-08-11 | 1978-08-11 | Acoustic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5525258A (US20100056889A1-20100304-C00004.png) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58135284A (ja) * | 1982-02-03 | 1983-08-11 | 株式会社熊平製作所 | 夜間投入金庫の投入装置 |
| GB2591731A (en) * | 2019-12-11 | 2021-08-11 | Gibby Adrian | Elimination of microphone feedback using cardioid antennas |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4925496A (US20100056889A1-20100304-C00004.png) * | 1972-07-01 | 1974-03-06 |
-
1978
- 1978-08-11 JP JP9807778A patent/JPS5525258A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4925496A (US20100056889A1-20100304-C00004.png) * | 1972-07-01 | 1974-03-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5525258A (en) | 1980-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6125280B2 (US20100056889A1-20100304-C00004.png) | ||
| JP2002078037A (ja) | ワイヤレス拡声装置 | |
| US4504874A (en) | Tape recorder | |
| JP2745753B2 (ja) | 音響再生装置 | |
| US1974904A (en) | Combined recorder and reproducer | |
| JP3229724B2 (ja) | オーディオ機器 | |
| JPS5834810Y2 (ja) | スケルチ回路 | |
| JPS6314501Y2 (US20100056889A1-20100304-C00004.png) | ||
| JPS5819759Y2 (ja) | ラジオツキテ−プレコ−ダ | |
| JPS5914897Y2 (ja) | テ−プレコ−ダ− | |
| JPS5923280Y2 (ja) | ラジオ付テ−プレコ−ダ | |
| JPH0516746Y2 (US20100056889A1-20100304-C00004.png) | ||
| JPH11243597A (ja) | マイクロフォン切替システム | |
| JPH0356938Y2 (US20100056889A1-20100304-C00004.png) | ||
| JPS6125111Y2 (US20100056889A1-20100304-C00004.png) | ||
| JP2532990B2 (ja) | スピ―カ―回路 | |
| JPS629528Y2 (US20100056889A1-20100304-C00004.png) | ||
| JPH1188979A (ja) | 音響再生装置 | |
| JP2712348B2 (ja) | 増幅装置 | |
| JPS6023835Y2 (ja) | ラジオ付テ−プレコ−ダのミユ−テイング装置 | |
| JPS6134622Y2 (US20100056889A1-20100304-C00004.png) | ||
| KR900006804Y1 (ko) | 스피커와 마이크 공용 사용회로 | |
| KR960004962B1 (ko) | 오디오출력기기의 적응적 볼륨자동조절장치 | |
| JPS634246Y2 (US20100056889A1-20100304-C00004.png) | ||
| JPS6128430Y2 (US20100056889A1-20100304-C00004.png) |
