JPS6452365U - - Google Patents
Info
- Publication number
- JPS6452365U JPS6452365U JP14641787U JP14641787U JPS6452365U JP S6452365 U JPS6452365 U JP S6452365U JP 14641787 U JP14641787 U JP 14641787U JP 14641787 U JP14641787 U JP 14641787U JP S6452365 U JPS6452365 U JP S6452365U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- dual
- surround
- input
- signal
- 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
- 230000009977 dual effect Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 4
- 230000005236 sound signal Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は本考案の一実施例を示す音声出力回路
の回路ブロツク図、第２図は第１図で通常時の接
続となるＢＴＬ回路の一例を示す回路図、第３図
は第２図の回路を説明する波形図、第４図は従来
の音声出力回路を示す回路ブロツク図、第５図は
他の従来例を示す回路ブロツク図である。
２１，２２……デユアルアンプ、２３，２４，
２５，２６……アンプ、２７……左スピーカ、２
８……右スピーカ、２９……サラウンド検出部、
３２，３３……サラウンド用スピーカ、Ｓ１〜Ｓ
８……スイツチ。
Fig. 1 is a circuit block diagram of an audio output circuit showing an embodiment of the present invention, Fig. 2 is a circuit diagram showing an example of the BTL circuit that is normally connected in Fig. 1, and Fig. 3 is Fig. 2 FIG. 4 is a circuit block diagram showing a conventional audio output circuit, and FIG. 5 is a circuit block diagram showing another conventional example. 21, 22...Dual amplifier, 23, 24,
25, 26...Amplifier, 27...Left speaker, 2
8...Right speaker, 29...Surround detection section,
32, 33...Surround speakers, S1 to S
8 ...Switch.
Claims (1)
、両信号を引算し、残響成分を主としたサラウン
ド信号を検出するサラウンド検出手段と、 前記左チヤンネル信号を入力する第１のアンプ
と前記サラウンド検出手段からのサラウンド信号
を入力する第２のアンプとから成る第１のデユア
ルアンプと、前記右チヤンネル信号を入力する第
３のアンプと前記サラウンド検出手段からのサラ
ウンド信号を入力する第４のアンプとから成る第
２のデユアルアンプを有した音声出力手段と、 サラウンドオフ時とサラウンド時とで前記音声
出力手段における前記第１のデユアルアンプの接
続及び前記第２のデユアルアンプの接続を切換え
る手段であつて、サラウンドオフ時は前記第１の
デユアルアンプをＢＴＬ接続すると共に前記第２
のデユアルアンプをＢＴＬ接続して各ＢＴＬ回路
から左右のステレオ音声信号のみを取出し、サラ
ウンド時は前記第１のデユアルアンプをデユアル
接続すると共に前記第２のデユアルアンプをデユ
アル接続して各デユアル回路から左右のステレオ
音声信号及び２つのサラウンド音声信号を取出す
切換手段とを具備したことを特徴とする音声出力
回路。[Claims for Utility Model Registration] Surround detection means for inputting a left channel signal and a right channel signal, subtracting both signals, and detecting a surround signal mainly containing reverberation components; a first dual amplifier consisting of a first amplifier and a second amplifier to which the surround signal from the surround detection means is input; a third amplifier to which the right channel signal is input; and a third amplifier to which the surround signal from the surround detection means is input; audio output means having a second dual amplifier consisting of a fourth input amplifier; and connection of the first dual amplifier in the audio output means and connection of the second dual amplifier in the surround off state and surround sound state; means for switching the connection of the first dual amplifier and the second dual amplifier when the surround is turned off.
The dual amplifiers are BTL connected and only the left and right stereo audio signals are taken out from each BTL circuit, and for surround sound, the first dual amplifier is dual connected and the second dual amplifier is dual connected to output from each dual circuit. 1. An audio output circuit comprising switching means for outputting left and right stereo audio signals and two surround audio signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14641787U JPS6452365U (en) | 1987-09-28 | 1987-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14641787U JPS6452365U (en) | 1987-09-28 | 1987-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6452365U true JPS6452365U (en) | 1989-03-31 |
Family
ID=31415887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14641787U Pending JPS6452365U (en) | 1987-09-28 | 1987-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6452365U (en) |
-
1987
- 1987-09-28 JP JP14641787U patent/JPS6452365U/ja active Pending
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