JPS6275652U - - Google Patents
Info
- Publication number
- JPS6275652U JPS6275652U JP16766785U JP16766785U JPS6275652U JP S6275652 U JPS6275652 U JP S6275652U JP 16766785 U JP16766785 U JP 16766785U JP 16766785 U JP16766785 U JP 16766785U JP S6275652 U JPS6275652 U JP S6275652U
- Authority
- JP
- Japan
- Prior art keywords
- level
- signal obtained
- signal
- microphone
- transmitting
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Transceivers (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Description
第１図および第２図はそれぞれ本考案に係る送
受話機の一例の要部を示す接続図、第３図および
第４図はそれぞれ雑音レベル検出部の別の例を示
す接続図、第５図は従来の送受話機の一例の要部
を示す接続図である。
図中、１１は送話用マイクロホン、１２は受話
用スピーカ、２１〜２６は信号レベル制御部を構
成する回路、５０は雑音レベル検出部、６１およ
び６２は比較レベル制御部を構成する回路である
。
1 and 2 are connection diagrams showing main parts of an example of a handset and receiver according to the present invention, FIGS. 3 and 4 are connection diagrams showing another example of a noise level detection section, and FIG. 5 1 is a connection diagram showing essential parts of an example of a conventional handset. In the figure, 11 is a transmitting microphone, 12 is a receiving speaker, 21 to 26 are circuits forming a signal level control section, 50 is a noise level detection section, and 61 and 62 are circuits forming a comparison level control section. .
Claims (1)
記受話用スピーカに供給される信号のレベルを比
較し、その比較出力により上記送話用マイクロホ
ンから得られた信号および上記受話用スピーカに
供給される信号のレベルを制御する信号レベル制
御部と、 上記送話用マイクロホンから得られた信号中の
雑音成分のレベルを検出する雑音レベル検出部と
、 この雑音レベル検出部の検出出力により、上記
信号レベル制御部において比較される上記送話用
マイクロホンから得られた信号または上記受話用
スピーカに供給される信号のレベルを、上記送話
用マイクロホンから得られた信号中の雑音成分の
レベルが大きいときほど相対的に上記送話用マイ
クロホンから得られた信号のレベルを小さくする
ように、直接またに等価的に変化させる比較レベ
ル制御部と、 を備えた送受話機。[Claim for Utility Model Registration] Compare the level of the signal obtained from the transmitting microphone and the receiving speaker with the signal obtained from the transmitting microphone and the signal supplied to the receiving speaker, and use the comparison output to claim the transmitting device. a signal level control unit that controls the level of the signal obtained from the speaking microphone and the signal supplied to the receiving speaker; and a noise level that detects the level of a noise component in the signal obtained from the speaking microphone. and a detection unit, and the detection output of the noise level detection unit determines the level of the signal obtained from the transmitting microphone or the signal supplied to the receiving speaker, which is compared in the signal level control unit. a comparison level control unit that directly or equivalently changes the level of the signal obtained from the transmitting microphone so as to relatively decrease the level of the signal obtained from the transmitting microphone as the level of the noise component in the signal obtained from the transmitting microphone increases; A handset and receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16766785U JPS6275652U (en) | 1985-10-31 | 1985-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16766785U JPS6275652U (en) | 1985-10-31 | 1985-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6275652U true JPS6275652U (en) | 1987-05-14 |
Family
ID=31099811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16766785U Pending JPS6275652U (en) | 1985-10-31 | 1985-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6275652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07307697A (en) * | 1994-05-13 | 1995-11-21 | Nec Corp | Communication equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS557987A (en) * | 1978-05-04 | 1980-01-21 | Volschskoe Obedinenie Po | End seal apparatus |
| JPS5763964A (en) * | 1980-10-04 | 1982-04-17 | Nec Corp | Aural switch circuit |
-
1985
- 1985-10-31 JP JP16766785U patent/JPS6275652U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS557987A (en) * | 1978-05-04 | 1980-01-21 | Volschskoe Obedinenie Po | End seal apparatus |
| JPS5763964A (en) * | 1980-10-04 | 1982-04-17 | Nec Corp | Aural switch circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07307697A (en) * | 1994-05-13 | 1995-11-21 | Nec Corp | Communication equipment |
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