JPS628771U - - Google Patents
Info
- Publication number
- JPS628771U JPS628771U JP9886585U JP9886585U JPS628771U JP S628771 U JPS628771 U JP S628771U JP 9886585 U JP9886585 U JP 9886585U JP 9886585 U JP9886585 U JP 9886585U JP S628771 U JPS628771 U JP S628771U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- sub
- audio multiplex
- frequency band
- multiplex 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
- 238000001514 detection method Methods 0.000 claims 2
- 230000005684 electric field Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Description
第１図はこの考案に係る音声多重信号復調回路
の一実施例を示すブロツク構成図、第２図は同実
施例の効果を説明するための特性曲線図、第３図
は従来の音声多重信号復調回路を示すブロツク構
成図、第４図は同従来回路の問題点を説明するた
めの特性曲線図である。
１１……ＩＣ本体、１２……入力端子、１３…
…出力端子、１４〜１８……帯域フイルタ回路、
１９〜２２……スイツチ、２３……インジケータ
端子、２４……比較回路。
Fig. 1 is a block configuration diagram showing an embodiment of the audio multiplex signal demodulation circuit according to this invention, Fig. 2 is a characteristic curve diagram for explaining the effects of the same embodiment, and Fig. 3 is a conventional audio multiplex signal demodulation circuit. FIG. 4 is a block diagram showing the demodulation circuit, and a characteristic curve diagram for explaining the problems of the conventional circuit. 11...IC body, 12...input terminal, 13...
...output terminal, 14-18...bandwidth filter circuit,
19-22...Switch, 23...Indicator terminal, 24...Comparison circuit.
Claims (1)
分離して復調する音声多重信号復調回路において
、前記入力された音声多重信号の電界強度を検出
する検出手段と、この検出手段からの出力信号に
応じて前記副信号の再生周波数帯域を決定する帯
域フイルタ回路の通過周波数帯域を変化させるフ
イルタ制御手段とを具備してなることを特徴とす
る音声多重信号復調回路。 In an audio multiplex signal demodulation circuit that separates and demodulates an input audio multiplex signal into a main signal and a sub signal, the audio multiplex signal demodulator includes a detection means for detecting the electric field strength of the input audio multiplex signal, and an output signal from the detection means. an audio multiplexed signal demodulation circuit comprising filter control means for changing a pass frequency band of a band filter circuit that determines a reproduction frequency band of the sub-signal according to the frequency band of the sub-signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9886585U JPS628771U (en) | 1985-06-28 | 1985-06-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9886585U JPS628771U (en) | 1985-06-28 | 1985-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS628771U true JPS628771U (en) | 1987-01-20 |
Family
ID=30967216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9886585U Pending JPS628771U (en) | 1985-06-28 | 1985-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS628771U (en) |
-
1985
- 1985-06-28 JP JP9886585U patent/JPS628771U/ja active Pending
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