JPH0486325U - - Google Patents
Info
- Publication number
- JPH0486325U JPH0486325U JP13077390U JP13077390U JPH0486325U JP H0486325 U JPH0486325 U JP H0486325U JP 13077390 U JP13077390 U JP 13077390U JP 13077390 U JP13077390 U JP 13077390U JP H0486325 U JPH0486325 U JP H0486325U
- Authority
- JP
- Japan
- Prior art keywords
- low
- pass filter
- audio signal
- frequency component
- voltage
- 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
- 230000005236 sound signal Effects 0.000 claims 3
- 239000000284 extract Substances 0.000 claims 2
- 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を示すブロツク図、
第２図は第１図に係わる低音域のブースト状態を
示す周波数特性図である。
１……第１の低域通過フイルタ（ＬＰＦ）、２
……電圧制御増幅器（ＶＣＡ）、３……加算回路
、４……第２の低域通過フイルタ（ＬＰＦ）、５
……第１の整流回路、６……高域通過フイルタ（
ＨＰＦ）、７……第２の整流回路、８……演算回
路。
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a frequency characteristic diagram showing the boost state of the bass range related to FIG. 1. 1...first low pass filter (LPF), 2
... Voltage control amplifier (VCA), 3 ... Addition circuit, 4 ... Second low pass filter (LPF), 5
...First rectifier circuit, 6...High-pass filter (
HPF), 7... second rectifier circuit, 8... arithmetic circuit.
Claims (1)
第１及び第２の低域通過フイルタと、 前記音声信号から中高音域成分を取り出す高域
通過フイルタと、 前記第２の低域通過フイルタからの低音域成分
と前記高域通過フイルタからの中高音域成分とを
比較して、その差に応じた制御電圧を出力する演
算回路と、 前記第１の低域通過フイルタからの低音域成分
を入力し前記制御電圧に応じて増幅する電圧制御
増幅器と、 前記電圧制御増幅器からの出力と前記音声信号
とを加算する加算回路とを備えたことを特徴とす
る音質調整回路。[Claims for Utility Model Registration] First and second low-pass filters that extract low-frequency components from an input audio signal; a high-pass filter that extracts mid-high frequency components from the audio signal; an arithmetic circuit that compares a low frequency component from the low pass filter and a middle and high frequency component from the high pass filter and outputs a control voltage according to the difference; and the first low pass filter. A sound quality adjustment circuit comprising: a voltage control amplifier that inputs a low frequency component from the voltage control amplifier and amplifies it according to the control voltage; and an addition circuit that adds the output from the voltage control amplifier and the audio signal. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13077390U JPH0486325U (en) | 1990-11-30 | 1990-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13077390U JPH0486325U (en) | 1990-11-30 | 1990-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0486325U true JPH0486325U (en) | 1992-07-27 |
Family
ID=31878089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13077390U Pending JPH0486325U (en) | 1990-11-30 | 1990-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0486325U (en) |
-
1990
- 1990-11-30 JP JP13077390U patent/JPH0486325U/ja active Pending
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