JPS6397918U - - Google Patents
Info
- Publication number
- JPS6397918U JPS6397918U JP19411786U JP19411786U JPS6397918U JP S6397918 U JPS6397918 U JP S6397918U JP 19411786 U JP19411786 U JP 19411786U JP 19411786 U JP19411786 U JP 19411786U JP S6397918 U JPS6397918 U JP S6397918U
- Authority
- JP
- Japan
- Prior art keywords
- resonant
- low frequency
- frequency range
- gain
- 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.)
- Granted
Links
- 230000005236 sound signal Effects 0.000 claims 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
は第１図の回路の動作特性を示す図、第３図及び
第４図は本考案の他の実施例を示す回路図、第５
図は低音音量調整回路の従来例を示す回路図、第
６図は第５図の回路の動作特性を示す図、第７図
は共振回路の共振特性を示す図である。
主要部分の符号の説明、１……オペアンプ、３
，８，１２……可変抵抗器、４，１０……共振回
路。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing the operating characteristics of the circuit in FIG. 1, and FIGS. 3 and 4 are circuit diagrams showing other embodiments of the present invention. Fifth
FIG. 6 is a circuit diagram showing a conventional example of a bass volume adjustment circuit, FIG. 6 is a diagram showing operating characteristics of the circuit of FIG. 5, and FIG. 7 is a diagram showing resonance characteristics of a resonant circuit. Explanation of symbols of main parts, 1... operational amplifier, 3
, 8, 12... variable resistor, 4, 10... resonant circuit.
Claims (1)
共振信号を発生する第１共振回路と、該第１共振
回路の共振中心周波数より大なる周波数を共振中
心周波数とする前記第１低域に含まれる第２低域
内の入力オーデイオ信号に対して第２共振信号を
発生する第２共振回路と、前記第１及び第２共振
信号に応じて入力オーデイオ信号のレベルを変化
させる利得可変手段とを含み、前記利得可変手段
は、前記第１共振信号に応じて前記第１低域の利
得を増加させるとき前記第２共振信号に応じて前
記第２低域の利得を減少させることを特徴とする
低音音量調整回路。 the first for the input audio signal within the first low frequency range.
a first resonant circuit that generates a resonant signal; a second resonant circuit that generates two resonant signals; and a variable gain means that changes the level of an input audio signal according to the first and second resonant signals; A bass volume adjustment circuit characterized in that when increasing the gain of the first low frequency range in response to the second resonance signal, the gain of the second low frequency range is decreased in response to the second resonance signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19411786U JPH0450647Y2 (en) | 1986-12-17 | 1986-12-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19411786U JPH0450647Y2 (en) | 1986-12-17 | 1986-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6397918U true JPS6397918U (en) | 1988-06-24 |
| JPH0450647Y2 JPH0450647Y2 (en) | 1992-11-30 |
Family
ID=31150787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19411786U Expired JPH0450647Y2 (en) | 1986-12-17 | 1986-12-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0450647Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0356217U (en) * | 1989-10-03 | 1991-05-30 |
-
1986
- 1986-12-17 JP JP19411786U patent/JPH0450647Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0356217U (en) * | 1989-10-03 | 1991-05-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0450647Y2 (en) | 1992-11-30 |
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