JPS62133845A - Reception sound volume control circuit for digital telephone set - Google Patents
Reception sound volume control circuit for digital telephone setInfo
- Publication number
- JPS62133845A JPS62133845A JP27447885A JP27447885A JPS62133845A JP S62133845 A JPS62133845 A JP S62133845A JP 27447885 A JP27447885 A JP 27447885A JP 27447885 A JP27447885 A JP 27447885A JP S62133845 A JPS62133845 A JP S62133845A
- Authority
- JP
- Japan
- Prior art keywords
- sound volume
- received
- surrounding
- volume
- sound
- 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はディジタル式電話機の受話音量制御回路に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a receiving volume control circuit for a digital telephone.
従来のディジタル式電話機に於いては、周囲音の大きさ
に関係無く、受信した受話音量が受話器へ送られ通話が
行なわれていた。In conventional digital telephones, the received voice volume is sent to the handset and a conversation is made, regardless of the volume of surrounding sounds.
従来のディジタル式電話機では、周囲音の大きさに関係
無く受信した受話音量を受話器へ送付しているので、周
囲音が大きい場合、相対的に受話音量が小さくなシ聞き
とシにぐいという問題点がある。With conventional digital telephones, the volume of the received call is sent to the handset regardless of the volume of surrounding sounds, so when the surrounding sound is loud, the problem is that when the surrounding sound is loud, the volume of the received call is relatively low. There is a point.
本発明は上記問題点を解決したものでアシ、増巾器をも
った受話回路及びハンズフリー通話に使用するマイク回
路を有するディジタル式電話機に於て、ハンドセット通
話時のマイク回路によって検知する周囲音の大きさに依
って受話音量を制御することを特徴とするものである。The present invention solves the above-mentioned problems.In a digital telephone having a receiving circuit with a reed, an amplification device, and a microphone circuit used for hands-free calls, ambient noise detected by the microphone circuit during a handset call is detected by the microphone circuit. This feature is characterized in that the listening volume is controlled depending on the volume of the voice.
次に、その実施例を図面を参照して説明する。 Next, an example thereof will be described with reference to the drawings.
第１図は本発明に係るディジタル式電話機の受話音量制
御回路の一実施例のブロック図である。FIG. 1 is a block diagram of an embodiment of a reception volume control circuit for a digital telephone according to the present invention.
図中、１は、受話音量を検出する受話音量検出部、２は
周囲音を受信するマイク、３は周囲音を検出する周囲音
検出部である。又４はこの受話音量と周囲音を比較する
比較回路部、５は比較回路部４の判定に依る受話音量を
制御する制御回路部である。又１１は受話器、１２．１
３．１４は受話回路の受話音量制御用抵抗（Ｒ１＋ Ｒ
ｚ ＋ Ｒｓ ）、１５は受話音量制御用スイッチ、１
６は増巾器である。In the figure, reference numeral 1 denotes a listening volume detection section that detects the listening volume, 2 a microphone that receives ambient sound, and 3 an ambient sound detection section that detects ambient sound. Reference numeral 4 denotes a comparison circuit that compares the volume of the received voice and ambient sounds, and 5 is a control circuit that controls the volume of the voice received based on the judgment of the comparison circuit 4. Also, 11 is the receiver, 12.1
3.14 is the receiver volume control resistor (R1+R
z + Rs), 15 is a switch for controlling the receiving volume, 1
6 is an amplifier.
次にその動作につき説明する０通話中、通話者は受話器
１１を通して相手の音声を受けているが、受信音量が小
さい場合受話を明瞭に聞きとることができない、この場
合、受話音量検出部１に受信した受話音量と、周囲音検
出マイク２を通して周囲音量検出部３にて受信した周囲
音とを比較回路部４にて比較判定している。そして、受
話音量と周囲音との比が所定よシ小さい場合には制御部
５が起動し、受話音量制御用スイッチ１５を駆動させる
。The operation will be explained next.During a call, the caller receives the other party's voice through the handset 11, but if the reception volume is low, the voice cannot be heard clearly.In this case, the reception volume detection unit 1 The comparison circuit section 4 compares and determines the received voice volume with the ambient sound received by the ambient sound volume detection section 3 through the ambient sound detection microphone 2. Then, when the ratio of the listening volume to the surrounding sound is smaller than a predetermined value, the control section 5 is activated and drives the listening volume control switch 15.
従って、スイッチ１５がオンすることによシ、受話回路
の受話音量のレベルは
増大される。従って、受話音量は相対的に周囲音量より
も大となり、受話音を明瞭に聞き取ることができる。Therefore, when the switch 15 is turned on, the listening volume level of the receiving circuit is increased. Therefore, the received voice volume is relatively louder than the surrounding volume, and the received voice can be heard clearly.
以上説明したように、本発明は受話音量と周囲音量の比
較に依シ、受話音量を制御するようにしているため、周
囲がうるさい場合でも受話を明瞭に聞きとることができ
るという効果がある。As explained above, since the present invention relies on the comparison of the listening volume and the ambient sound volume to control the listening volume, it has the effect that the listening voice can be heard clearly even when the surroundings are noisy.
第１図は本発明に係るディジタル式電話機の受話音量制
御回路の一実施例のブロック図である。
１・・・受話音量検出部 ２・・・周囲音検出マイク
３・・・周囲音量検出部 ４・・・比較回路部５・・
・受話音量制御部 １１・・・受話器１２・・・受話
音量制御用抵抗１゜
１３・・・受話音量制御用抵抗２゜
１４・・・受部雀（＃ＪＩ柳旧積６３゜１５・・・受話
音量制御用スイッチ
１６・・・増巾器
代理人 弁理士 村 １）幹 雄
ｓ１図FIG. 1 is a block diagram of an embodiment of a reception volume control circuit for a digital telephone according to the present invention. 1... Receiving volume detection unit 2... Ambient sound detection microphone 3... Ambient volume detection unit 4... Comparison circuit unit 5...
・Receiver volume control unit 11...Receiver 12...Resistance 1゜13...Resistance 2゜14...Receiver part (#JI Yanagi old product 63゜15...・Receiver volume control switch 16...Amplifier agent Patent attorney Mura 1) Miki Yu s1 diagram
Claims (1)
るマイク回路を有するデイジタル式電話機に於て、ハン
ドセツト通話時のマイク回路によつて検知する周囲音の
大きさに依つて、受話音量を制御することを特徴とする
デイジタル式電話機の受話音量制御回路。In digital telephones that have a receiver circuit with an amplifier and a microphone circuit used for hands-free calls, the receiver volume is controlled depending on the level of ambient sound detected by the microphone circuit during handset calls. A receiver volume control circuit for a digital telephone set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27447885A JPS62133845A (en) | 1985-12-06 | 1985-12-06 | Reception sound volume control circuit for digital telephone set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27447885A JPS62133845A (en) | 1985-12-06 | 1985-12-06 | Reception sound volume control circuit for digital telephone set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62133845A true JPS62133845A (en) | 1987-06-17 |
Family
ID=17542249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27447885A Pending JPS62133845A (en) | 1985-12-06 | 1985-12-06 | Reception sound volume control circuit for digital telephone set |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62133845A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100343776B1 (en) * | 1999-12-03 | 2002-07-20 | 한국전자통신연구원 | Apparatus and method for volume control of the ring signal and/or input speech following the background noise pressure level in digital telephone |
| JP2011211484A (en) * | 2010-03-30 | 2011-10-20 | Saxa Inc | Telephone system, and voice speech control method of the telephone system |
-
1985
- 1985-12-06 JP JP27447885A patent/JPS62133845A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100343776B1 (en) * | 1999-12-03 | 2002-07-20 | 한국전자통신연구원 | Apparatus and method for volume control of the ring signal and/or input speech following the background noise pressure level in digital telephone |
| JP2011211484A (en) * | 2010-03-30 | 2011-10-20 | Saxa Inc | Telephone system, and voice speech control method of the telephone system |
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