JPS5854193U - MFB speaker bridge detection circuit - Google Patents
MFB speaker bridge detection circuitInfo
- Publication number
- JPS5854193U JPS5854193U JP14848081U JP14848081U JPS5854193U JP S5854193 U JPS5854193 U JP S5854193U JP 14848081 U JP14848081 U JP 14848081U JP 14848081 U JP14848081 U JP 14848081U JP S5854193 U JPS5854193 U JP S5854193U
- Authority
- JP
- Japan
- Prior art keywords
- speaker
- resistor
- detection circuit
- bridge detection
- mfb
- 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.)
- Granted
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は加速度型ＭＦＢによる音圧レベルの周波数特性
図、第２図は速度型ＭＦＢによる音圧レベルの周波数特
性図、第３図は振幅型ＭＦＢによる音圧レベルの周波数
特性図、第４図は従来のブリッジ検出回路を示す図、第
５図はその等価回路図、第６図は第４図の回路による検
出信号レベルの周波数特性図、第７図は第６図の信号を
微分した信号の周波数特性図、第８図はスピーカのイン
ピーダンス特性を示す図、第９図は改良したブリッジ回
路を示す図、第１０図はＬＣ共振回路のインピーダンス
特性を示す図、第１１図は本考案に係るブリッジ検出回
路を示す図、第１２図は■。
及びＶＢの特性図、第１３図は検出信号の特性を示す図
である。Figure 1 is a frequency characteristic diagram of sound pressure level due to acceleration type MFB, Figure 2 is a frequency characteristic diagram of sound pressure level due to velocity type MFB, Figure 3 is a frequency characteristic diagram of sound pressure level due to amplitude type MFB, and Figure 4 is a frequency characteristic diagram of sound pressure level due to amplitude type MFB. The figure shows a conventional bridge detection circuit, Figure 5 is its equivalent circuit diagram, Figure 6 is a frequency characteristic diagram of the detection signal level by the circuit of Figure 4, and Figure 7 is the differential of the signal in Figure 6. Figure 8 shows the impedance characteristics of the speaker, Figure 9 shows the improved bridge circuit, Figure 10 shows the impedance characteristics of the LC resonant circuit, and Figure 11 shows the impedance characteristics of the speaker. FIG. 12 is a diagram showing a bridge detection circuit according to . FIG. 13 is a diagram showing the characteristics of the detection signal.
Claims (1)
フィードバック）スピーカ回路に於いて、増幅器と、該
増幅器により駆動されるスピーカと、該スピーカと直列
に接続された第１抵抗と、前記スピーカと前記第１抵抗
間に設けられた第１端子と、前記増幅器からの出力経路
で前記スピーカを有する経路とは異なる経路に設けられ
た第２抵抗及び第１コンデンサとよりなる第１並列回路
と、該第１並列回路と直列に接続される第３抵抗及び第
２コンデンサよりなる第２並列回路と、該第２並列回路
と前記第１並列回路間に設けられた第２端子とよりなり
、前記第１、第２端子より前記スピーカの振動を表わす
信号を取出すことを特徴とするＭＦＢスピーカのブリッ
ジ検出回路。An MFB (motional feedback) speaker circuit for improving the acoustic characteristics of a speaker includes an amplifier, a speaker driven by the amplifier, a first resistor connected in series with the speaker, and a first resistor connected to the speaker in series. a first terminal provided between one resistor; a second resistor and a first capacitor provided in an output path from the amplifier that is different from a path including the speaker; a second parallel circuit including a third resistor and a second capacitor connected in series with the first parallel circuit, and a second terminal provided between the second parallel circuit and the first parallel circuit; . A bridge detection circuit for an MFB speaker, characterized in that a signal representing vibration of the speaker is extracted from a second terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14848081U JPS5854193U (en) | 1981-10-05 | 1981-10-05 | MFB speaker bridge detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14848081U JPS5854193U (en) | 1981-10-05 | 1981-10-05 | MFB speaker bridge detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5854193U true JPS5854193U (en) | 1983-04-13 |
| JPH0129906Y2 JPH0129906Y2 (en) | 1989-09-12 |
Family
ID=29941295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14848081U Granted JPS5854193U (en) | 1981-10-05 | 1981-10-05 | MFB speaker bridge detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5854193U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017511090A (en) * | 2014-02-26 | 2017-04-13 | デヴィアレ | Device for controlling a loudspeaker |
| JP2017511091A (en) * | 2014-02-26 | 2017-04-13 | デヴィアレ | Device for controlling a loudspeaker |
-
1981
- 1981-10-05 JP JP14848081U patent/JPS5854193U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017511090A (en) * | 2014-02-26 | 2017-04-13 | デヴィアレ | Device for controlling a loudspeaker |
| JP2017511091A (en) * | 2014-02-26 | 2017-04-13 | デヴィアレ | Device for controlling a loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0129906Y2 (en) | 1989-09-12 |
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