JPH0324714U - - Google Patents
Info
- Publication number
- JPH0324714U JPH0324714U JP3658790U JP3658790U JPH0324714U JP H0324714 U JPH0324714 U JP H0324714U JP 3658790 U JP3658790 U JP 3658790U JP 3658790 U JP3658790 U JP 3658790U JP H0324714 U JPH0324714 U JP H0324714U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- frequency
- multiplication coefficient
- cut
- arithmetic 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
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Filters And Equalizers (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Description
第1図は本考案の回路の基本的構成を説明する
ためのブロツク図、第2図は本考案に用いるフイ
ルタ特性の一例を示す線図、第3図は低域減衰及
び増強特性の一例を示す線図、第4図は本考案に
よる高域減衰及び増強特性の一例を示す線図、第
5図は本考案による高域音質調整回路の例を示す
略式回路図、第6図及び第7図は連動可変抵抗器
の例を示す接続図である。
1……入力端子、2……低域通過フイルタ、3
,8……演算回路、4……加算器、5……出力端
子、X,Z,Z′……遮断周波数可変手段である
。
Figure 1 is a block diagram for explaining the basic configuration of the circuit of the present invention, Figure 2 is a diagram showing an example of filter characteristics used in the present invention, and Figure 3 is an example of low-frequency attenuation and enhancement characteristics. FIG. 4 is a diagram showing an example of the high frequency attenuation and enhancement characteristics according to the present invention, FIG. 5 is a schematic circuit diagram showing an example of the high frequency sound quality adjustment circuit according to the present invention, and FIGS. The figure is a connection diagram showing an example of an interlocking variable resistor. 1...Input terminal, 2...Low pass filter, 3
, 8... Arithmetic circuit, 4... Adder, 5... Output terminal, X, Z, Z'... Cutoff frequency variable means.
Claims (1)
段の直列接続回路を通して得られる信号と、上記
入力信号を第2の演算手段を通して得られる信号
とを加算して出力信号とすることにより、周波数
特性調整する回路において、上記第2の演算回路
の掛算係数をKとするとき第1の演算回路の掛算
係数を1−Kとし、上記フイルタの遮断周波数を
上記演算回路掛算回路の掛算係数におけるKの値
が1<K≦1の時は一定とし、上記演算回路の掛
算係数におけるKの値がK≧1の時は上記フイル
タの遮断周波数を上記Kの値に比例して変化させ
る遮断周波数可変手段を設けることを特徴とする
周波数特性調整回路。 The frequency characteristic is determined by adding the input signal through a series connection circuit of a low-pass filter and the first calculation means and the signal obtained through the input signal through the second calculation means to obtain an output signal. In the circuit to be adjusted, when the multiplication coefficient of the second arithmetic circuit is K, the multiplication coefficient of the first arithmetic circuit is 1-K, and the cutoff frequency of the filter is set to K in the multiplication coefficient of the multiplication circuit of the arithmetic circuit. cut-off frequency variable means that keeps the cut-off frequency constant when the value is 1<K≦1, and changes the cut-off frequency of the filter in proportion to the value of K when the value of K in the multiplication coefficient of the arithmetic circuit is K≧1; A frequency characteristic adjustment circuit comprising:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3658790U JPH0328588Y2 (en) | 1990-04-06 | 1990-04-06 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3658790U JPH0328588Y2 (en) | 1990-04-06 | 1990-04-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0324714U true JPH0324714U (en) | 1991-03-14 |
JPH0328588Y2 JPH0328588Y2 (en) | 1991-06-19 |
Family
ID=31542952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3658790U Expired JPH0328588Y2 (en) | 1990-04-06 | 1990-04-06 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0328588Y2 (en) |
-
1990
- 1990-04-06 JP JP3658790U patent/JPH0328588Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPH0328588Y2 (en) | 1991-06-19 |
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