JPH0262864U - - Google Patents
Info
- Publication number
- JPH0262864U JPH0262864U JP14246888U JP14246888U JPH0262864U JP H0262864 U JPH0262864 U JP H0262864U JP 14246888 U JP14246888 U JP 14246888U JP 14246888 U JP14246888 U JP 14246888U JP H0262864 U JPH0262864 U JP H0262864U
- Authority
- JP
- Japan
- Prior art keywords
- sound
- transmitting
- receiving
- control device
- gain
- 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
- 210000000988 bone and bone Anatomy 0.000 claims description 3
- 210000000613 ear canal Anatomy 0.000 claims 1
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 2
- 210000003625 skull Anatomy 0.000 description 2
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Description
第１図は本考案の第１の実施例の基本構成を示
すブロツク図、第２図は制御電圧値と電圧制御減
衰器の減衰量の関係を示す減衰量特性図、第３図
は本実施例装置が他の通信手段に接続される場合
のブロツク図、第４図は骨伝導マイク単体の周波
数特性と人間の頭骨の振動伝達特性を示す周波特
性図、第５図はこの考案の第２の実施例の基本構
成を示すブロツク図、第６図はバンドパスフイル
タの回路図、第７図は第２の実施例の要部詳細回
路図、第８図は従来例における音響信号制御装置
のブロツク図、第９図は従来例におけるフイルタ
部の作用を説明する周波数特性図である。
４…スピーカ一体型イヤーマイクロフオン、７
，３１，３４…増幅器、８，３６…比較器、９，
３７…制御電圧発生器、１０，１１…電圧制御減
衰器、１２…信号処理部、３２，３３…バンドパ
スフイルタ、３５…送話用電圧制御減衰器、３８
…受話用電圧制御減衰器。
Fig. 1 is a block diagram showing the basic configuration of the first embodiment of the present invention, Fig. 2 is an attenuation characteristic diagram showing the relationship between the control voltage value and the attenuation amount of the voltage-controlled attenuator, and Fig. 3 is a block diagram showing the basic configuration of the first embodiment of the present invention. Example: A block diagram when the device is connected to other communication means. Figure 4 is a frequency characteristic diagram showing the frequency characteristics of a single bone conduction microphone and the vibration transmission characteristics of the human skull. Figure 5 is a diagram showing the frequency characteristics of a single bone conduction microphone and the vibration transmission characteristics of the human skull. 6 is a circuit diagram of the bandpass filter, FIG. 7 is a detailed circuit diagram of the main part of the second embodiment, and FIG. 8 is a diagram of the conventional acoustic signal control device. The block diagram and FIG. 9 are frequency characteristic diagrams illustrating the action of the filter section in the conventional example. 4... Ear microphone with integrated speaker, 7
, 31, 34...Amplifier, 8, 36...Comparator, 9,
37... Control voltage generator, 10, 11... Voltage controlled attenuator, 12... Signal processing section, 32, 33... Band pass filter, 35... Voltage controlled attenuator for transmitting, 38
...Voltage controlled attenuator for receiving calls.
Claims (1)
ツプするマイクと一体型のスピーカの音響信号制
御装置において、 送話音響と受話音響を比較し、送話音響が大き
い場合にはその大きさに対応して受話利得を低下
させ、受話音響が大きい場合にはその大きさに対
応して送話利得を低下させて、送受話間のクロス
トークによるループ利得を１以下に維持しながら
同時送受話を行うことを特徴とする音響信号制御
装置。[Scope of Claim for Utility Model Registration] In an acoustic signal control device for a speaker integrated with a microphone that is inserted into the ear canal and picks up bone conduction audio signal sounds, the transmitting sound is compared with the receiving sound, and the transmitting sound is louder. If the receiving sound is loud, the receiving sound gain is lowered correspondingly to the loudness, and when the receiving sound is loud, the transmitting sound gain is reduced correspondingly to the loudness, so that the loop gain due to crosstalk between the transmitting and receiving sounds is reduced to 1 or less. An acoustic signal control device characterized by transmitting and receiving calls simultaneously while maintaining
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14246888U JPH0262864U (en) | 1988-10-31 | 1988-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14246888U JPH0262864U (en) | 1988-10-31 | 1988-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0262864U true JPH0262864U (en) | 1990-05-10 |
Family
ID=31408451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14246888U Pending JPH0262864U (en) | 1988-10-31 | 1988-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0262864U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001052595A1 (en) * | 2000-01-12 | 2001-07-19 | Micro M's Inc. | Portable telephone using single earphone having microphone function |
| JP2009188638A (en) * | 2008-02-05 | 2009-08-20 | Univ Of Electro-Communications | Microphone device |
-
1988
- 1988-10-31 JP JP14246888U patent/JPH0262864U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001052595A1 (en) * | 2000-01-12 | 2001-07-19 | Micro M's Inc. | Portable telephone using single earphone having microphone function |
| JP2009188638A (en) * | 2008-02-05 | 2009-08-20 | Univ Of Electro-Communications | Microphone device |
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