JPS647495U - - Google Patents
Info
- Publication number
- JPS647495U JPS647495U JP10220087U JP10220087U JPS647495U JP S647495 U JPS647495 U JP S647495U JP 10220087 U JP10220087 U JP 10220087U JP 10220087 U JP10220087 U JP 10220087U JP S647495 U JPS647495 U JP S647495U
- Authority
- JP
- Japan
- Prior art keywords
- audio signal
- sounding body
- signal reproducing
- reproducing device
- audio
- 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 description 11
- 238000010586 diagram Methods 0.000 description 4
Description
第１図及び第２図は夫々本考案の音声信号再生
装置の第１及び第２実施例の回路構成図、第３図
は２つのスピーカによる音場拡大の原理説明図、
第４図は従来の音声信号再生装置の主要部の回路
構成図、第５図及び第６図は夫々従来装置におけ
る音場拡大ＯＮ、ＯＦＦスイツチ付近の回路図で
ある。
１０……音声信号再生装置、１１，１２……（
差動）増幅器、１５Ｌ，１５Ｒ……外部スピーカ
接続端子、ＨＰ……ヘツドホン接続端子、Ｒ５，
Ｒ６，Ｒ１１，Ｒ１３……音場拡大回路を構成す
る抵抗、ＳＬ，ＳＲ……内蔵スピーカ、ＳＷ３〜
ＳＷ５……スイツチ。
1 and 2 are circuit configuration diagrams of the first and second embodiments of the audio signal reproducing device of the present invention, respectively, and FIG. 3 is a diagram illustrating the principle of sound field expansion using two speakers,
FIG. 4 is a circuit diagram of the main parts of a conventional audio signal reproducing device, and FIGS. 5 and 6 are circuit diagrams of the vicinity of the sound field expansion ON and OFF switches, respectively, in the conventional device. 10...Audio signal reproducing device, 11, 12...(
differential) amplifier, 15L, 15R...external speaker connection terminal, HP...headphone connection terminal, R5 ,
R 6 , R 11 , R 13 ... Resistance forming the sound field expansion circuit, SL, SR ... Built-in speaker, SW 3 ...
SW 5 ...Switch.
Claims (1)
めの装置本体に取付けられた２つの内蔵スピーカ
と、該装置本体とは別体の２つの音声チヤンネル
の信号を装置本体とは別体の発音体を接続するた
めの接続端子と、該接続端子に該発音体が接続さ
れた際に上記内蔵スピーカへの音声信号を該発音
体側に切換える切換えスイツチとを少なくとも備
えた音声信号再生装置において、 上記各チヤンネルの音声信号を夫々増幅する２
つの増幅器と、該各々の増幅器の出力信号を互い
に他のチヤンネルの増幅器の反転入力端子に供給
する音場拡大回路とを備え、上記各チヤンネルの
内蔵スピーカへの出力ラインと該音場拡大回路と
の接続点と、上記各増幅器の出力端子との間に、
上記切換えスイツチを挿入接続したことを特徴と
する音声信号再生装置。 (2) 上記発音体はヘツドホンである実用新案登
録請求の範囲第１項記載の音声信号再生装置。 (3) 上記発音体は外部スピーカである実用新案
登録請求の範囲第１項記載の音声信号再生装置。 (4) 上記発音体はヘツドホン及び外部スピーカ
であり、上記切換えスイツチと接続端子を各チヤ
ンネル毎に両方備えた実用新案登録請求の範囲第
１項記載の音声信号再生装置。[Claims for Utility Model Registration] (1) Two built-in speakers attached to a device body for reproducing audio signals of two left and right channels, and a device that reproduces signals of two audio channels separate from the device body. At least a connection terminal for connecting a sounding body separate from the main body, and a changeover switch for switching the audio signal to the built-in speaker to the sounding body when the sounding body is connected to the connection terminal. In the audio signal reproducing device, each of the audio signals of each channel is amplified.
and a sound field expansion circuit that supplies the output signals of each of the amplifiers to the inverting input terminals of the amplifiers of the other channels, and an output line to the built-in speaker of each channel and the sound field expansion circuit. between the connection point of and the output terminal of each of the above amplifiers,
An audio signal reproducing device characterized in that the above changeover switch is inserted and connected. (2) The audio signal reproducing device according to claim 1, wherein the sounding body is a headphone. (3) The audio signal reproducing device according to claim 1, wherein the sounding body is an external speaker. (4) The audio signal reproducing device according to claim 1, wherein the sounding body is a headphone and an external speaker, and the switching switch and the connection terminal are provided for each channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10220087U JPS647495U (en) | 1987-07-02 | 1987-07-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10220087U JPS647495U (en) | 1987-07-02 | 1987-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS647495U true JPS647495U (en) | 1989-01-17 |
Family
ID=31331891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10220087U Pending JPS647495U (en) | 1987-07-02 | 1987-07-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS647495U (en) |
-
1987
- 1987-07-02 JP JP10220087U patent/JPS647495U/ja active Pending
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