JPH0431896U - - Google Patents
Info
- Publication number
- JPH0431896U JPH0431896U JP7222090U JP7222090U JPH0431896U JP H0431896 U JPH0431896 U JP H0431896U JP 7222090 U JP7222090 U JP 7222090U JP 7222090 U JP7222090 U JP 7222090U JP H0431896 U JPH0431896 U JP H0431896U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- switch
- acoustic signal
- output
- amplifier circuit
- 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
- 230000003321 amplification Effects 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例のラジオカセツトレ
コーダ２１の電気的構成を示すブロツク図、第２
図は従来技術のラジオカセツトレコーダ１の電気
的構成を示すブロツク図である。
２１……ラジオカセツトレコーダ、２３……ラ
ジオ受信部、２６……録音再生部、２７……ソー
ス選択スイツチ、２８……スピーカ、３１……ボ
リウム、３２……低音域増強回路、３３……アナ
ログスイツチ、３４……メインアンプ、３５，４
１……スイツチ、３６……減衰用抵抗、３７……
ヘツドホンジヤツク、３８……プラグ、３９……
接続ケーブル、４０……ヘツドホン、４５……逆
特性フイルタ、ｌ１……バイパス信号ライン。
FIG. 1 is a block diagram showing the electrical configuration of a radio cassette recorder 21 according to an embodiment of the present invention, and FIG.
The figure is a block diagram showing the electrical configuration of a radio cassette recorder 1 of the prior art. 21...Radio cassette recorder, 23...Radio receiving section, 26...Recording/playback section, 27...Source selection switch, 28...Speaker, 31...Volume, 32...Bass range enhancement circuit, 33...Analog Switch, 34... Main amplifier, 35, 4
1...Switch, 36...Attenuation resistor, 37...
Headphone jack, 38...Plug, 39...
Connection cable, 40...Headphone, 45...Inverse characteristic filter, l1...Bypass signal line.
Claims (1)
する低音域増強回路と、 前記低音域増強回路とは逆の周波数特性を有し
、低音域増強回路からの音響信号を補正して出力
する逆特性回路と、 低音域増強回路からの音響信号と、逆特性回路
を介する音響信号とを選択的に切換えて出力する
第１スイツチと、 前記第１スイツチからの音響信号を増幅する増
幅回路と、 スピーカと、 スピーカと増幅回路との間に介在される第２ス
イツチと、 前記増幅回路の出力が与えられ、出力信号ライ
ンが着脱自在に接続される外部接続端子と、 前記外部接続端子に前記出力信号ラインが接続
されているか否かを検出し、接続されていないと
きには前記第２スイツチを導通して増幅回路の出
力をスピーカに与え、かつ低音域増強回路の出力
を増幅回路に入力するように第１スイツチのスイ
ツチング状態を制御し、前記出力信号ラインが接
続されているときには前記第２スイツチを遮断し
、かつ逆特性回路からの音響信号を増幅回路に入
力するように第１スイツチのスイツチング状態を
制御する切換制御手段とを含むことを特徴とする
音響再生装置。[Claims for Utility Model Registration] An acoustic signal source; a bass boost circuit for boosting the bass range of an acoustic signal from the acoustic signal source; an inverse characteristic circuit that corrects and outputs the acoustic signal from the amplification circuit; a first switch that selectively switches and outputs the acoustic signal from the bass amplification circuit and the acoustic signal via the inverse characteristic circuit; an amplifier circuit that amplifies the acoustic signal from the first switch; a speaker; a second switch interposed between the speaker and the amplifier circuit; and an output signal line to which the output of the amplifier circuit is applied and which is detachably connected. detects whether or not the output signal line is connected to the external connection terminal; and when the output signal line is not connected, conducts the second switch to provide the output of the amplifier circuit to the speaker; The switching state of the first switch is controlled so that the output of the sound range enhancement circuit is input to the amplifier circuit, and when the output signal line is connected, the second switch is cut off, and the acoustic signal from the reverse characteristic circuit is controlled. 1. A sound reproducing device comprising: switching control means for controlling the switching state of the first switch so as to input the signal to the amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7222090U JP2502086Y2 (en) | 1990-07-05 | 1990-07-05 | Sound reproduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7222090U JP2502086Y2 (en) | 1990-07-05 | 1990-07-05 | Sound reproduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0431896U true JPH0431896U (en) | 1992-03-16 |
| JP2502086Y2 JP2502086Y2 (en) | 1996-06-19 |
Family
ID=31609967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7222090U Expired - Fee Related JP2502086Y2 (en) | 1990-07-05 | 1990-07-05 | Sound reproduction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2502086Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2568805Y2 (en) | 1991-09-26 | 1998-04-15 | アイワ株式会社 | Speaker device |
-
1990
- 1990-07-05 JP JP7222090U patent/JP2502086Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2502086Y2 (en) | 1996-06-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |