JPH0238815U - - Google Patents
Info
- Publication number
- JPH0238815U JPH0238815U JP11782588U JP11782588U JPH0238815U JP H0238815 U JPH0238815 U JP H0238815U JP 11782588 U JP11782588 U JP 11782588U JP 11782588 U JP11782588 U JP 11782588U JP H0238815 U JPH0238815 U JP H0238815U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- variable
- variable resistor
- output
- adjustment circuit
- 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
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Description
第１図は本考案の一実施例の音質調整回路１１
の電気回路図、第２図は音質調整回路１１の周波
数特性を示すグラフ、第３図は本考案の他の実施
例の音質調整回路３１の電気回路図、第４図は従
来技術の音質調整回路１の電気回路図、第５図は
音質調整回路１の周波数特性を示すグラフである
。
１１，３１……音質調整回路、１２……音響信
号源、１３……低域調整回路、１４，３４……高
域調整回路、１５……演算増幅器、１６，２１…
…ライン、１８……電力増幅回路、１９……スピ
ーカ、Ｒ１〜Ｒ６，Ｒ９〜Ｒ１３……抵抗、Ｒ７
，Ｒ８……可変抵抗、Ｃ０，Ｃ１〜Ｃ５……コン
デンサ、Ｔｒ１……トランジスタ。
FIG. 1 shows a sound quality adjustment circuit 11 according to an embodiment of the present invention.
2 is a graph showing the frequency characteristics of the sound quality adjustment circuit 11, FIG. 3 is an electric circuit diagram of the sound quality adjustment circuit 31 according to another embodiment of the present invention, and FIG. 4 is a sound quality adjustment circuit of the prior art. The electric circuit diagram of the circuit 1, FIG. 5, is a graph showing the frequency characteristics of the sound quality adjustment circuit 1. 11, 31... Sound quality adjustment circuit, 12... Acoustic signal source, 13... Low frequency adjustment circuit, 14, 34... High frequency adjustment circuit, 15... Operational amplifier, 16, 21...
... Line, 18 ... Power amplifier circuit, 19 ... Speaker, R1 to R6, R9 to R13 ... Resistor, R7
, R8... variable resistor, C0, C1-C5... capacitor, Tr1... transistor.
Claims (1)
と、第２抵抗Ｒ４と、第１可変抵抗Ｒ７と、第３
抵抗Ｒ５と、第４抵抗Ｒ６とをこの順序で直列に
接続し、 前記第１可変抵抗Ｒ７にはコンデンサＣ３を並
列に接続し、第１可変抵抗Ｒ７の出力を演算増幅
器に入力し、該演算増幅器の出力を第４抵抗Ｒ６
の出力側に接続し、 前記第１抵抗Ｒ３と第２抵抗Ｒ４との接続点と
、前記第３抵抗Ｒ５と第４抵抗Ｒ６との接続点と
の間に第２可変抵抗Ｒ８を接続し、この第２可変
抵抗Ｒ８の出力側に直列共振回路を接続すること
を特徴とする音質調整回路。[Claims for Utility Model Registration] A first resistor R3 is connected to the line to which the audio signal is applied.
, a second resistor R4, a first variable resistor R7, and a third resistor R4.
A resistor R5 and a fourth resistor R6 are connected in series in this order, a capacitor C3 is connected in parallel to the first variable resistor R7, the output of the first variable resistor R7 is input to an operational amplifier, and the The output of the amplifier is connected to the fourth resistor R6.
A second variable resistor R8 is connected to the output side of the resistor, and a second variable resistor R8 is connected between a connecting point between the first resistor R3 and the second resistor R4 and a connecting point between the third resistor R5 and the fourth resistor R6, A sound quality adjustment circuit characterized in that a series resonant circuit is connected to the output side of the second variable resistor R8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11782588U JPH0513055Y2 (en) | 1988-09-07 | 1988-09-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11782588U JPH0513055Y2 (en) | 1988-09-07 | 1988-09-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0238815U true JPH0238815U (en) | 1990-03-15 |
| JPH0513055Y2 JPH0513055Y2 (en) | 1993-04-06 |
Family
ID=31361622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11782588U Expired - Lifetime JPH0513055Y2 (en) | 1988-09-07 | 1988-09-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0513055Y2 (en) |
-
1988
- 1988-09-07 JP JP11782588U patent/JPH0513055Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0513055Y2 (en) | 1993-04-06 |