JPS62124658U - - Google Patents
Info
- Publication number
- JPS62124658U JPS62124658U JP1348886U JP1348886U JPS62124658U JP S62124658 U JPS62124658 U JP S62124658U JP 1348886 U JP1348886 U JP 1348886U JP 1348886 U JP1348886 U JP 1348886U JP S62124658 U JPS62124658 U JP S62124658U
- Authority
- JP
- Japan
- Prior art keywords
- level
- frequency range
- input
- high frequency
- recording amplifier
- 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
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は入出力レベル特性図、第３図は録音アンプの
周波数特性図、第４図は録音入力レベルと録音ア
ンプの入力レベルを示す特性図、第５図は従来の
回路図である。
ＩＮ……入力端子、ＩＮＡ……入力部、ＡＭＰ
２……録音アンプ、Ｒ３，Ｒ４……抵抗、Ｑ２…
…トランジスタ。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
3 is an input/output level characteristic diagram, FIG. 3 is a frequency characteristic diagram of a recording amplifier, FIG. 4 is a characteristic diagram showing the recording input level and the input level of the recording amplifier, and FIG. 5 is a conventional circuit diagram. IN...Input terminal, INA...Input section, AMP
2 ...Recording amplifier, R3 , R4 ...Resistor, Q2 ...
...transistor.
Claims (1)
つて、前記入力信号のレベルを制御回路により制
御し、前記録音アンプの出力レベルを一定にする
自動録音レベル調整回路において、前記録音アン
プは前記入力信号の高域を低域より増幅レベルを
高く設定することにより、入力信号に高域成分が
あるとき、前記制御回路が前記録音アンプの高域
の入力レベルを低域より低いレベルにして前記入
力信号のレベルを一定となる方向に制御するよう
に設定してなることを特徴とする自動録音レベル
調整回路。 In the automatic recording level adjustment circuit, the level of the input signal is controlled by a control circuit according to the magnitude of the input signal input to the recording amplifier, and the output level of the recording amplifier is kept constant. By setting the amplification level for the high frequency range of the signal higher than the low frequency range, when the input signal has a high frequency component, the control circuit lowers the input level of the high frequency range of the recording amplifier to a level lower than that of the low frequency range, thereby increasing the input level of the high frequency range of the recording amplifier. An automatic recording level adjustment circuit characterized in that the circuit is configured to control the signal level in a constant direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1348886U JPS62124658U (en) | 1986-01-31 | 1986-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1348886U JPS62124658U (en) | 1986-01-31 | 1986-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62124658U true JPS62124658U (en) | 1987-08-07 |
Family
ID=30802592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1348886U Pending JPS62124658U (en) | 1986-01-31 | 1986-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62124658U (en) |
-
1986
- 1986-01-31 JP JP1348886U patent/JPS62124658U/ja active Pending
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