JPH036315U - - Google Patents
Info
- Publication number
- JPH036315U JPH036315U JP6565289U JP6565289U JPH036315U JP H036315 U JPH036315 U JP H036315U JP 6565289 U JP6565289 U JP 6565289U JP 6565289 U JP6565289 U JP 6565289U JP H036315 U JPH036315 U JP H036315U
- Authority
- JP
- Japan
- Prior art keywords
- electronic volume
- output
- microcomputer
- converter
- power 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
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 2
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図は本考案の原理図、第２図はその処理を
示す概略フローチヤート、第３図は本考案の実施
例を示す構成図、第４図は歪率特性図、第５図は
キーマトリクスの他の構成図、第６図は従来のＤ
Ｃ電圧制御型歪改善回路の構成図、第７図はコン
パレータの入出力波形図、第８図はパワーアンプ
の出力特性図、第９図はパワーアンプの歪率特性
図である。
図中、１０……マイコン制御型電子ボリユーム
、２１……パワーアンプ、２３……コンパレータ
、４０……ＤＣ／ＤＣ変換部、７０……マイクロ
コンピユータ、８０……キーマトリクスである。
Fig. 1 is a diagram of the principle of the present invention, Fig. 2 is a schematic flowchart showing its processing, Fig. 3 is a configuration diagram showing an embodiment of the invention, Fig. 4 is a distortion rate characteristic diagram, and Fig. 5 is a key. Another configuration diagram of the matrix, Figure 6, is the conventional D
FIG. 7 is a diagram showing the input and output waveforms of the comparator, FIG. 8 is a diagram showing the output characteristics of the power amplifier, and FIG. 9 is a diagram showing the distortion rate characteristics of the power amplifier. In the figure, 10... microcomputer-controlled electronic volume, 21... power amplifier, 23... comparator, 40... DC/DC converter, 70... microcomputer, 80... key matrix.
Claims (1)
る減衰量を設定する電子ボリユーム６０と、 該電子ボリユーム６０に制御データを与えるマ
イクロコンピユータ７０と、 該電子ボリユーム６０を通過したオーデイオ信
号を増幅するパワーアンプの入出力波形を比較し
て出力歪を検出するコンパレータ２３と、 該コンパレータ２３の出力を直流に変換して前
記マイクロコンピユータ７０に入力するＡＣ／Ｄ
Ｃ変換部４０とを備え、 該マイクロコンピユータ７０は該ＡＣ／ＤＣ変
換部４０の出力が設定値となるように前記電子ボ
リユーム６０の減衰量を順次変更するようにして
なることを特徴とする歪改善回路。[Claims for Utility Model Registration] An electronic volume 60 that sets the amount of attenuation for audio input using external control data, a microcomputer 70 that provides control data to the electronic volume 60, and an audio signal that has passed through the electronic volume 60. a comparator 23 that detects output distortion by comparing input and output waveforms of a power amplifier that amplifies the power amplifier; and an AC/D converter that converts the output of the comparator 23 into direct current and inputs it to the microcomputer 70.
C converter 40, and the microcomputer 70 sequentially changes the attenuation amount of the electronic volume 60 so that the output of the AC/DC converter 40 becomes a set value. Improved circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6565289U JPH036315U (en) | 1989-06-05 | 1989-06-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6565289U JPH036315U (en) | 1989-06-05 | 1989-06-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH036315U true JPH036315U (en) | 1991-01-22 |
Family
ID=31597671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6565289U Pending JPH036315U (en) | 1989-06-05 | 1989-06-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH036315U (en) |
-
1989
- 1989-06-05 JP JP6565289U patent/JPH036315U/ja active Pending
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