JPS61174267U - - Google Patents
Info
- Publication number
- JPS61174267U JPS61174267U JP5709385U JP5709385U JPS61174267U JP S61174267 U JPS61174267 U JP S61174267U JP 5709385 U JP5709385 U JP 5709385U JP 5709385 U JP5709385 U JP 5709385U JP S61174267 U JPS61174267 U JP S61174267U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- channel
- audio
- demodulator
- audio 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
- 239000011159 matrix material Substances 0.000 claims description 5
- 230000005236 sound signal Effects 0.000 claims 20
- 241001505400 Strix Species 0.000 claims 1
- 229940013840 strix Drugs 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Television Receiver Circuits (AREA)
- Stereo-Broadcasting Methods (AREA)
Description
第1図及び第2図は夫々本未考案になる音声多
重放送信号の送受信装置の音声復調部の第1及び
第2実施例を示すブロツク系統図、第3図は従来
の音声多重テレビジヨン受信機の音声復調部の一
例を示すブロツク系統図、第4図は米国における
テレビ音声多重放送方式を示す周波数スペクトラ
ム図である。
1……周波数分割多重信号入力端子、7,24
……マトリクス回路、17,18……加算回路、
19……第2の差信号出力端子、20……レベル
調整器、23……帯域制限回路、25……第2の
和信号出力端子。
1 and 2 are block system diagrams showing first and second embodiments of the audio demodulation section of an audio multiplex broadcasting signal transmitting/receiving apparatus which has not yet been devised, and FIG. 3 is a conventional audio multiplex television reception system. FIG. 4 is a block system diagram showing an example of the audio demodulation section of the machine, and FIG. 4 is a frequency spectrum diagram showing the television audio multiplex broadcasting system in the United States. 1... Frequency division multiplex signal input terminal, 7, 24
... Matrix circuit, 17, 18 ... Addition circuit,
19... Second difference signal output terminal, 20... Level adjuster, 23... Band limit circuit, 25... Second sum signal output terminal.
Claims (1)
1の副チヤンネル信号とでステレオ音声信号を送
信すると共に、これと同時に上記主及び副チヤン
ネル信号と帯域を異にし、かつ、モノラル音声信
号で搬送波を変調して得た第2の副チヤンネル信
号を送信し、これらを受信する音声多重放送信号
の送受信装置において、左チヤンネルの音声信号
と右チヤンネルの音声信号と第1のモノラル音声
信号との第1の和信号を上記主チヤンネル信号と
し、該左チヤンネルの音声信号と右チヤンネルの
音声信号との第1の差信号で変調して得た信号を
上記第1の副チヤンネル信号とし、第2のモノラ
ル音声信号と該第1のモノラル音声信号との第2
の差信号又は該左及び右チヤンネル音声信号と該
第2のモノラル音声信号との第2の和信号で変調
して得た信号を上記第2の副チヤンネル信号とし
てこれらを同時に送信する送信装置と、該送信装
置より送信された信号を受信して、該主チヤンネ
ル信号、該第1の副チヤンネル信号及び該第2の
副チヤンネル信号とを別々に波するフイルタ回
路と、該フイルタ回路により分離された該第1の
副チヤンネル信号を復調して上記第1の差信号を
得る第1の復調器と、該フイルタ回路により分離
された該第2の副チヤンネル信号を復調して上記
第2の差信号又は第2の和信号を得る第2の復調
器と、該フイルタ回路により分離された該主チヤ
ンネル信号と該第1の復調器よりの該第1の差信
号と該第2の復調器よりの該第2の差信号又は第
2の和信号とを夫々加減算して該左チヤンネルの
音声信号と該第2のモノラル音声信号との和信号
を第1の端子へ出力すると共に該右チヤンネルの
音声信号と該第2のモノラル音声信号との和信号
を第2の端子へ出力するストリクス手段とよなる
音声多重放送信号の送受信装置。 (2) 該マトリクス手段は、該フイルタ回路によ
り分離された該主チヤンネル信号と該第1の復調
器よりの該第1の差信号とを夫々加算及び減算し
て該左チヤンネルの音声信号と該第1のモノラル
音声信号とよりなる第3の和信号と該右チヤンネ
ルの音声信号と該第1のモノラル音声信号とより
なる第4の和信号とを夫々得るマトリクス回路と
、該マトリクス回路よりの該第3及び第4の和信
号に該第2の復調器よりの該第2の差信号を別々
に加算する第1及び第2の加算回路とよりなる実
用新案登録請求の範囲第1項記載の音声多重放送
信号の送受信装置。 (3) 該マトリクス手段は、該第1の復調器より
の該第1の差信号に対して該第2の復調器よりの
該第2の和信号を別々に加算及び減算して得た信
号を該第1及び第2の端子へ出力するマトリクス
回路である実用新案登録請求の範囲第1項記載の
音声多重放送信号の送受信装置。[Claims for Utility Model Registration] (1) A stereo audio signal is transmitted using a main channel signal of a direct wave and a first sub-channel signal of a modulated wave, and at the same time, the main channel signal and the band of the above-mentioned sub-channel signals are transmitted. In an audio multiplex broadcast signal transmitting/receiving device that transmits and receives a second sub-channel signal obtained by modulating a carrier wave with a monaural audio signal, the audio signal of the left channel and the audio signal of the right channel are transmitted. and the first monaural audio signal as the main channel signal, and the signal obtained by modulating with the first difference signal between the left channel audio signal and the right channel audio signal as the main channel signal. 1 sub-channel signal, and a second monaural audio signal and a second monaural audio signal of the first monaural audio signal.
or a signal obtained by modulating with a second sum signal of the left and right channel audio signals and the second monaural audio signal, and transmitting them simultaneously as the second sub-channel signal; , a filter circuit that receives a signal transmitted from the transmitting device and separately waves the main channel signal, the first sub-channel signal, and the second sub-channel signal; a first demodulator that demodulates the first sub-channel signal to obtain the first difference signal; and a first demodulator that demodulates the second sub-channel signal separated by the filter circuit to obtain the second difference signal. a second demodulator for obtaining a signal or a second sum signal, the main channel signal separated by the filter circuit, the first difference signal from the first demodulator, and the first difference signal from the second demodulator; The sum signal of the left channel audio signal and the second monaural audio signal is outputted to the first terminal by adding and subtracting the second difference signal or the second sum signal, respectively. A transmitting/receiving device for an audio multiplex broadcast signal, comprising a strix means for outputting a sum signal of an audio signal and the second monaural audio signal to a second terminal. (2) The matrix means adds and subtracts the main channel signal separated by the filter circuit and the first difference signal from the first demodulator, respectively, to obtain the left channel audio signal and the difference signal. a matrix circuit that obtains a third sum signal consisting of the first monaural audio signal and a fourth sum signal consisting of the right channel audio signal and the first monaural audio signal; Utility model registration claimed in claim 1, comprising first and second adding circuits that separately add the second difference signal from the second demodulator to the third and fourth sum signals. A transmitter/receiver for audio multiplex broadcast signals. (3) The matrix means generates a signal obtained by separately adding and subtracting the second sum signal from the second demodulator to the first difference signal from the first demodulator. The audio multiplex broadcasting signal transmitting/receiving device according to claim 1, which is a matrix circuit that outputs the signal to the first and second terminals.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5709385U JPS61174267U (en) | 1985-04-17 | 1985-04-17 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5709385U JPS61174267U (en) | 1985-04-17 | 1985-04-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61174267U true JPS61174267U (en) | 1986-10-30 |
Family
ID=30581298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5709385U Pending JPS61174267U (en) | 1985-04-17 | 1985-04-17 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61174267U (en) |
-
1985
- 1985-04-17 JP JP5709385U patent/JPS61174267U/ja active Pending
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