JPH056924B2 - - Google Patents
Info
- Publication number
- JPH056924B2 JPH056924B2 JP60208504A JP20850485A JPH056924B2 JP H056924 B2 JPH056924 B2 JP H056924B2 JP 60208504 A JP60208504 A JP 60208504A JP 20850485 A JP20850485 A JP 20850485A JP H056924 B2 JPH056924 B2 JP H056924B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- section
- sound quality
- resistor
- variable resistor
- 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.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims description 14
- 230000007306 turnover Effects 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 10
- 230000002238 attenuated effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Description
【発明の詳細な説明】
発明の目的：
［産業上の利用分野］
この発明は音質調節回路に関し、オーデイオの
分野にあいて利用される。[Detailed Description of the Invention] Object of the Invention: [Industrial Field of Application] The present invention relates to a sound quality adjustment circuit and is used in the audio field.
［従来技術］
低音域の音質を調節する音質調節回路として第
３図イに示す回路図のものがある。この回路図の
ものは第３図ロに示すような特性を示す。[Prior Art] As a sound quality adjustment circuit for adjusting the sound quality in the bass range, there is a circuit diagram shown in FIG. 3A. This circuit diagram exhibits characteristics as shown in FIG. 3B.
［発明が解決しようとする問題点］
第３図イに示す従来例の回路図のものは同図ロ
に示す特性図のようにあるターンオーバ周波数で
低音域を増強、或いは減衰できるが、この程度の
変化範囲では十分に音質調節できない。複雑な回
路ひいては高価となる回路を用いれば音質の調節
は十分に行ないうるようになるが、この発明の簡
単な回路を用いて、換言すれば、安価な回路手段
を用いて十分に音質調節できる音質調節回路を提
供せんとしてなされたものである。[Problems to be Solved by the Invention] The conventional circuit diagram shown in Figure 3A can enhance or attenuate the bass range at a certain turnover frequency as shown in the characteristic diagram shown in Figure 3B. The sound quality cannot be adjusted sufficiently within the range of change. Although the sound quality can be sufficiently adjusted using a complicated circuit and even an expensive circuit, the sound quality can be sufficiently adjusted using the simple circuit of the present invention, in other words, using inexpensive circuit means. This was done to provide a sound quality adjustment circuit.
発明の構成：
この発明の音質調節回路は、摺動子の摺動区間
内に抵抗体区間と短絡体区間を設けた可変抵抗器
とコンデンサの並列接続からなるCR並列回路を
Ｎ個直列接続してＮ個のターンオーバ周波数を有
する回路を、中間タツプを有する音量調節用可変
抵抗器の、ホツト側端子と入力端子間、及び中間
タツプ端子とアースライン間にそれぞれ接続し、
アース側端子をアースライン間にそれぞれ接続し
た構成である。Structure of the invention: The sound quality adjustment circuit of the present invention has N CR parallel circuits connected in series, each consisting of a variable resistor and a capacitor connected in parallel, each having a resistor section and a short-circuit section within the sliding section of a slider. and connect circuits having N turnover frequencies between the hot side terminal and the input terminal and between the intermediate tap terminal and the ground line of a volume control variable resistor having an intermediate tap, respectively.
The configuration is such that the ground side terminals are connected between the ground lines.
［実施例］
第１図はCR並列回路を２個直列接続した２個
のターンオーバ周波数を有する回路を用いた場合
の本発明の特許請求の範囲第２項記載の実施例の
回路図を示す。摺動子の摺動区間内に抵抗体区間
と短絡体区間を設けた可変抵抗器は４個必要であ
り、それぞれ、VR1，VR2，VR3，VR4とし、可
変抵抗器R1とコンデンサC1とが並列接続し、
VR1の可変抵抗値R1，VR2の可変抵抗値をR2，
VR3の可変抵抗値R3，VR4の可変抵抗値をR4と
する。可変抵抗器VR2とコンデンサC2とが並列
接続し、可変抵抗器VR3とコンデンサC3とが並
列接続し、可変抵抗器VR4コンデンサC4とが並
列接続する。可変抵抗器VR1とコンデンサC1と
の並列接続回路と可変抵抗器VR2とコンデンサ
C2との並列接続回路とを直列接続し音量調節用
可変抵抗器の、ホツト側端子と入力端子間に接続
してあり、可変抵抗器VR3とコンデンサC3との
並列接続回路と可変抵抗器VR4とコンデンサC4
との並列接続回路と直列接続し音量調節用可変抵
抗器VR5の、中間タツプ端子とアースライン間に
接続ししてある。[Embodiment] Fig. 1 shows a circuit diagram of an embodiment according to claim 2 of the present invention in which a circuit having two turnover frequencies in which two CR parallel circuits are connected in series is used. . Four variable resistors are required, each having a resistor section and a short-circuit section within the sliding section of the slider. They are VR 1 , VR 2 , VR 3 , and VR 4 , respectively, and the variable resistors R 1 and Capacitor C 1 is connected in parallel,
The variable resistance value of VR 1 is R 1 , the variable resistance value of VR 2 is R 2 ,
The variable resistance value of VR 3 is R 3 , and the variable resistance value of VR 4 is R 4 . Variable resistor VR 2 and capacitor C 2 are connected in parallel, variable resistor VR 3 and capacitor C 3 are connected in parallel, and variable resistor VR 4 is connected in parallel with capacitor C 4 . Parallel connection circuit of variable resistor VR 1 and capacitor C 1 and variable resistor VR 2 and capacitor
A parallel connection circuit with variable resistor VR 3 and capacitor C 3 is connected in series between the hot side terminal and the input terminal of the variable resistor for volume adjustment, and a parallel connection circuit with variable resistor VR 3 and capacitor C 3 is connected in series. capacitor VR 4 and capacitor C 4
It is connected in series with the parallel connection circuit of the volume control variable resistor VR 5 between the intermediate tap terminal and the ground line.
先ず、低音域が増強される場合から説明する。
符号C1，C2，C3，C4を容量値に読替えて、
R3＋R7）／（C3・R3・R7）＝ω3a ……(1)
R1・R6＋R1・R7＋R5・R6＋R6・R7＋R7・R5）／｛C1R1（
R5・R6＋R6・R7＋R7・R5）｝＝ω33b……(2)
とおくと、伝達関数e0／eiは、
e0／ei＝（R6・R7）（ｓ＋ω33a）／（R5・R6＋R6・R7
＋R7・R5）（ｓ＋ω33b）……(4)
となり、第２図イにおいて符号ａで示す如く、低
音域が増強された特性になる。角周波数ω3aは、
可変抵抗器VR３の抵抗値R3によつて変化し、抵
抗値R3が小さくなればターンオーバ角周波数
ω3a、ω3b共に大きくなるように変化する。 First, the case where the bass range is enhanced will be explained.
Replace the symbols C 1 , C 2 , C 3 , and C 4 with capacitance values, R 3 + R 7 )/(C 3・R 3・R 7 )=ω 3a ...(1) R 1・R 6 + R 1・R 7 +R 5・R 6 +R 6・R 7 +R 7・R 5 )/{C 1 R 1 (
R 5・R 6 +R 6・R 7 +R 7・R 5 )}=ω 3 3b……(2) Then, the transfer function e 0 /e i is as follows: e 0 /e i = (R 6・R 7 ) (s + ω 33a ) / (R 5・R 6 +R 6・R 7
+R 7 ·R 5 )(s+ω 33b )...(4) As shown by the symbol a in FIG. 2A, the characteristic is that the bass range is enhanced. The angular frequency ω 3a is
It changes depending on the resistance value R 3 of the variable resistor VR3, and as the resistance value R 3 becomes smaller, both the turnover angular frequencies ω 3a and ω 3b change to become larger.
また、
（R4＋R7）／（C4・R4・R7）＝ω4a ……(3)
（R4・R5＋R4・R6＋R5・R6＋R6・R7＋R7・R5）／｛C4・
R4（R5・R6＋R6・R7＋R7・R5）｝＝ω4b……(4)
とおくと、伝達関数e0／eiは、
e0／ei＝（R5・R6＋R6・R7＋R7・R5）（ｓ＋ω4b）……
(5)
となり、第２図イにおいて符号ｂで示す如く、低
音域が増強された特性になる。角周波数ω4a，
ω4bは、可変抵抗器VR４の抵抗値R4によつて変
化し抵抗値R4が小さくなればターンオーバ角周
波数ω4a，ω4b共に大きくなるように変化する。 Also, (R 4 + R 7 ) / (C 4 · R 4 · R 7 ) = ω 4a ... (3) (R 4 · R 5 + R 4 · R 6 + R 5 · R 6 + R 6 · R 7 + R 7・R 5 )/{C 4・
R 4 (R 5 · R 6 + R 6 · R 7 + R 7 · R 5 )} = ω 4b ... (4) Then, the transfer function e 0 /e i is, e 0 /e i = (R 5・R 6 +R 6・R 7 +R 7・R 5 ) (s+ω 4b )...
(5) As shown by the symbol b in Fig. 2A, the characteristic is that the bass range is enhanced. Angular frequency ω 4a ,
ω 4b varies depending on the resistance value R 4 of the variable resistor VR4, and as the resistance value R 4 decreases, both the turnover angular frequencies ω 4a and ω 4b increase.
次に、低音域が減衰される場合から説明する。 Next, a case where the low frequency range is attenuated will be explained.
１／（C1・R1）＝ωa ……(6)
R1・R6＋R1・R7＋R5・R6＋R6・R7＋R7・R5）／｛C1・R1
（R5・R6＋R6・R7＋R7・R5）｝＝ω1b……(7)
とおくと、伝達関数e0／eiは、
（e0／ei＝（R6・R7）（ｓ＋ω1a）／（R5・R6＋R6・R7
＋R7・R5）（ｓ＋ω1b）……(8)
となり、第２図イにおいて符号ｃで示す如く、低
音域が減衰された特性になる。角周波数ω1a，
ω1bは、可変抵抗器VR１の抵抗値R1によつて変
化し抵抗値R1が小さくなればターンオーバ角周
波数ω1a・ω1b共に大きくなるように変化する。 1/(C 1・R 1 )=ω a ...(6) R 1・R 6 +R 1・R 7 +R 5・R 6 +R 6・R 7 +R 7・R 5 )/{C 1・R 1
(R 5・R 6 +R 6・R 7 +R 7・R 5 )}=ω 1b ...(7) Then, the transfer function e 0 /e i is (e 0 /e i = (R 6・R 7 ) (s + ω 1a ) / (R 5・R 6 +R 6・R 7
+R 7 ·R 5 )(s+ω 1b )...(8) As shown by the symbol c in FIG. 2A, the low frequency range is attenuated. Angular frequency ω 1a ,
ω 1b changes depending on the resistance value R 1 of the variable resistor VR1, and as the resistance value R 1 becomes smaller, the turnover angular frequencies ω 1a and ω 1b both increase.
また、
１／（C2・R2）＝ω2a ……(9)
（R2・R6＋R2・R7＋R5・R6＋R6・R7＋R7・R5）／｛C2・
R2（R5・R6＋R6・R7＋R7・R5）｝＝ω2b……(10)
とおくと、伝達関数e0／eiは、
（e0／ei＝（R6・R7）（ｓ＋ω2a）／（R5・R6＋R6・R7
＋R7・R5）（ｓ＋ω2b）……(8)
となり、第２図イにおいて符号ｄで示す如く、低
音域が減衰された特性になる。角周波数ω2aは、
可変抵抗器VR２の抵抗値R2によつて変化し、抵
抗値R2が小さくなればターンオーバ角周波数
ω2a・ω2b共に大きくなるように変化する。 Also, 1/(C 2 · R 2 ) = ω 2a ... (9) (R 2 · R 6 + R 2 · R 7 + R 5 · R 6 + R 6 · R 7 + R 7 · R 5 ) / {C 2・
R 2 (R 5 · R 6 + R 6 · R 7 + R 7 · R 5 )} = ω 2b ... (10) Then, the transfer function e 0 /e i is (e 0 /e i = (R 6・R 7 ) (s+ω 2a )/(R 5・R 6 +R 6・R 7
+R 7 ·R 5 )(s+ω 2b )...(8) This results in a characteristic in which the low frequency range is attenuated, as shown by the symbol d in FIG. 2A. The angular frequency ω 2a is
It changes depending on the resistance value R 2 of the variable resistor VR2, and as the resistance value R 2 becomes smaller, both the turnover angular frequencies ω 2a and ω 2b change to become larger.
このように、第２図イの示す如く、低音域を増
強、或いは減衰でき、また、第２図ロに示す如
く、可変抵抗器VR１，VR２，VR３，VR４の
組合せによつて低音域の或る帯域を増強或いはエ
リミネーシヨンでき、また低音域を階段状に増
強、或いは減衰できる。 In this way, as shown in FIG. 2A, the bass range can be enhanced or attenuated, and as shown in FIG. It is possible to enhance or eliminate the low frequency range, and it is also possible to enhance or attenuate the low frequency range in a stepwise manner.
上記実施例は、Ｎ＝２、の場合であるが、２に
限定されず、３、４、……と２以上の整数の場合
も同様である。 Although the above embodiment deals with the case where N=2, it is not limited to 2, and the same applies to cases where N is an integer of 2 or more, such as 3, 4, . . . .
発明の効果
この発明は摺動子の摺動区間内に抵抗体区間と
短絡体区間を設けた可変抵抗器とコンデンサを数
組用いた比較的安価な回路手段を用いて低音域を
増強或いは減衰できるだけでなく、低音域の或る
帯域を増強或いはエリミネーシヨンでき、また低
音域を階段状に増強或いは減衰できる。Effects of the Invention The present invention enhances or attenuates the low frequency range by using a relatively inexpensive circuit means using several sets of variable resistors and capacitors in which a resistor section and a short-circuit section are provided in the sliding section of the slider. Not only this, but also it is possible to enhance or eliminate a certain band of the bass range, and it is also possible to enhance or attenuate the bass range in a stepwise manner.
第１図はこの発明の実施例を説明する回路図、
第２図イは実施例の回路の特性図、第２図ロは実
施例の回路の特性を可変調節した例示の特性図、
第３図イ，ロは従来例を説明する回路図及び特性
図である。
R1，R2，R3，R4……それぞれ可変抵抗器、
C1，C2，C3，C4……それぞれコンデンサ、VR…
…音量調節用可変抵抗器、１……アース制御端
子、２……出力端子、３……ホツト側端子、４…
…中間タツプ端子。
FIG. 1 is a circuit diagram explaining an embodiment of this invention,
FIG. 2A is a characteristic diagram of the circuit of the embodiment, FIG. 2B is an exemplary characteristic diagram in which the characteristics of the circuit of the embodiment are variably adjusted,
FIGS. 3A and 3B are a circuit diagram and a characteristic diagram illustrating a conventional example. R 1 , R 2 , R 3 , R 4 ...variable resistors, respectively
C 1 , C 2 , C 3 , C 4 ... each capacitor, VR...
...Variable resistor for volume adjustment, 1...Earth control terminal, 2...Output terminal, 3...Hot side terminal, 4...
...Intermediate tap terminal.
Claims (1)
間を設けた可変抵抗器とコンデンサとの並列接続
からなるCR並列回路をＮ個直列接続してＮ個の
ターンオーバ周波数を有する回路を、中間タツプ
を有する音量調節用可変抵抗器の、ホツト側端子
と入力端子間、及び中間タツプ端子とアースライ
ン間にそれぞれ接続し、アース側端子をアースラ
イン間にそれぞれ接続した音質調節回路。 ２ 音量調節用可変抵抗器の、ホツト側端子と入
力端子間及び中間タツプ端子とアースライン間に
それぞれ接続の、ターンオーバ周波数の同じCR
並列回路のそれぞれの可変抵抗器を連動させたこ
とを特徴とする特許請求の範囲第１項記載の音質
調節回路。 ３ 連動するそれぞれの可変抵抗器を一方が抵抗
体区間を摺動するとき他方が短絡体区間を摺動
し、他方が抵抗体区間を摺動するとき一方が短絡
体区間を摺動するように連動させたことを特徴と
する特許請求の範囲第２項記載の音質調節回路。[Scope of Claims] 1 CR parallel circuits each consisting of a variable resistor and a capacitor connected in parallel, each having a resistor section and a short-circuit section within the sliding section of the slider, are connected in series to form N CR parallel circuits. Connect a circuit with a turnover frequency between the hot side terminal and the input terminal and between the intermediate tap terminal and the ground line of a volume control variable resistor with an intermediate tap, and connect the earth side terminal between the earth line. Connected sound quality adjustment circuit. 2 CRs with the same turnover frequency connected between the hot side terminal and the input terminal and between the intermediate tap terminal and the ground line of the variable resistor for volume adjustment.
2. The sound quality adjustment circuit according to claim 1, wherein the variable resistors of the parallel circuits are linked together. 3. Connect the variable resistors so that when one slides through the resistor section, the other slides through the short-circuit section, and when the other slides through the resistor section, one slides through the short-circuit section. The sound quality adjustment circuit according to claim 2, characterized in that the sound quality adjustment circuit is interlocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60208504A JPS6268310A (en) | 1985-09-19 | 1985-09-19 | Tone quality adjusting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60208504A JPS6268310A (en) | 1985-09-19 | 1985-09-19 | Tone quality adjusting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6268310A JPS6268310A (en) | 1987-03-28 |
| JPH056924B2 true JPH056924B2 (en) | 1993-01-27 |
Family
ID=16557249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60208504A Granted JPS6268310A (en) | 1985-09-19 | 1985-09-19 | Tone quality adjusting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6268310A (en) |
-
1985
- 1985-09-19 JP JP60208504A patent/JPS6268310A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6268310A (en) | 1987-03-28 |
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