JPS6331142B2 - - Google Patents
Info
- Publication number
- JPS6331142B2 JPS6331142B2 JP2805081A JP2805081A JPS6331142B2 JP S6331142 B2 JPS6331142 B2 JP S6331142B2 JP 2805081 A JP2805081 A JP 2805081A JP 2805081 A JP2805081 A JP 2805081A JP S6331142 B2 JPS6331142 B2 JP S6331142B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- variable
- receiving
- loss
- auxiliary
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
- H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2805081A JPS57142063A (en) | 1981-02-27 | 1981-02-27 | Audio switch circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2805081A JPS57142063A (en) | 1981-02-27 | 1981-02-27 | Audio switch circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57142063A JPS57142063A (en) | 1982-09-02 |
JPS6331142B2 true JPS6331142B2 (en]) | 1988-06-22 |
Family
ID=12237922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2805081A Granted JPS57142063A (en) | 1981-02-27 | 1981-02-27 | Audio switch circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57142063A (en]) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08162660A (ja) * | 1994-12-07 | 1996-06-21 | Kazuichi Torii | 太陽電池の支持装置 |
-
1981
- 1981-02-27 JP JP2805081A patent/JPS57142063A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS57142063A (en) | 1982-09-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH06104970A (ja) | 拡声電話機 | |
JPH01194555A (ja) | 電話機 | |
JPS61198950A (ja) | 拡声電話装置 | |
US5170430A (en) | Voice-switched handset receive amplifier | |
US4346261A (en) | Speaker phones | |
JPS6331142B2 (en]) | ||
JPS60236556A (ja) | 音声制御されるハンドフリ−電話装置用回路装置 | |
JPS63208342A (ja) | 拡声同時通話装置 | |
JPS61195054A (ja) | 拡声電話機の音声スイツチ回路 | |
JPS60134548A (ja) | 拡声電話装置 | |
JPH0311984Y2 (en]) | ||
JPH0311985Y2 (en]) | ||
JPH0326704Y2 (en]) | ||
JPS5856562A (ja) | 音声スイツチ回路 | |
JPS63272254A (ja) | 電話装置 | |
JPH056820B2 (en]) | ||
JPS61195055A (ja) | 拡声電話機の音声スイツチ回路 | |
JPS61131660A (ja) | 拡声電話機の制御方式 | |
JPS60235564A (ja) | 拡声電話機 | |
JPS61195049A (ja) | 拡声電話機の音声スイツチ回路 | |
JPH0267049A (ja) | 拡声電話機のハウリング防止装置 | |
JPH0224424B2 (en]) | ||
JPH02164164A (ja) | 拡声電話装置 | |
JPS6372249A (ja) | 送受話切換回路 | |
JPH0556132A (ja) | 拡声電話装置回路 |