JPS6084003A - Loudness control circuit - Google Patents
Loudness control circuitInfo
- Publication number
- JPS6084003A JPS6084003A JP58192681A JP19268183A JPS6084003A JP S6084003 A JPS6084003 A JP S6084003A JP 58192681 A JP58192681 A JP 58192681A JP 19268183 A JP19268183 A JP 19268183A JP S6084003 A JPS6084003 A JP S6084003A
- Authority
- JP
- Japan
- Prior art keywords
- volume
- frequency characteristic
- sound volume
- frequency
- characteristic
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
- H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
- H03G9/14—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for gain control and tone control
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はラウドネスコントロール回路に係わシ、特に可
聴周波数帯域の高I或および低域の周波数特性を音量に
対応して変更するラウドネスコントロール回路に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loudness control circuit, and more particularly to a loudness control circuit that changes the frequency characteristics of high I and low frequencies in the audible frequency band in accordance with the volume.
従来、可聴周波数帯域の周波数特性は目的に応じて促準
的周波数特性と異なる周波数′;ケ性が1:すられるよ
うになっている。標準的周波a f−1+性を]−yつ
可聴周波数帯域では音量が小音量となると高域部分と低
域部分で聴感か低下する現象、いわゆるフレッチャーマ
ンソン特性がある。この居合に対処するため高域と低域
、あるいは高域または低域のいずれか一方のレベルk
+iQ正するラウドネスコントロール回路を設け、押釦
または回転形の]゛六作)′X1!材を操作して周波数
特性を変更する。Conventionally, the frequency characteristics of the audible frequency band are different from the standard frequency characteristics depending on the purpose. In the standard frequency af-1+]-y audible frequency band, there is a so-called Fletcher-Munson characteristic, which is a phenomenon in which the audibility deteriorates in the high and low frequencies when the volume becomes small. In order to deal with this problem, the level k of the high and low ranges, or either the high range or the low range.
A loudness control circuit is provided to correct +iQ, and a push button or rotation type] ゛6)'X1! Manipulate materials to change frequency characteristics.
本発明は音量調節用デリー−ムで音J[1−を小γ’r
f’+1にしたとき自動的に周波数!1琴性を変更し
フレッチャーマンソン特性に対応できるラウドネスコン
トロール回路ヲ提供することを目的とする。In the present invention, the sound J[1- is set to a small γ'r
Frequency automatically when set to f'+1! 1. An object of the present invention is to provide a loudness control circuit that can change the harp characteristic and respond to Fletcher Munson characteristics.
以下、本発明によるラウドネスコントロール回路の一実
施例全rb1図にしたがってム兄明する。Hereinafter, an embodiment of the loudness control circuit according to the present invention will be explained in detail with reference to FIG.
第1図において、2はバイパスフィルタ、6は周波数特
性袈更用ボIJ、−ム、7は昌’ ili調負j用がリ
ュームである。周波数特性変更用ポリ、−ムロと音fk
?A i走用ハ?リエーム7は回転形可変抵抗Z:)
で形成され同軸で時計方向に同軸したとき」1脣動子6
cおよび7cは始点側端子6a、7aから終点側端子6
b 、7b方向へ摺動する。9111i子1から入力さ
れた音声信号はハイi4スフィルタで、アンプ5を介し
て周波数特性変更用ip リュームロの始点1+10ψ
1°M子6aへ送出される。終点側端子6bは基準電位
点と結線される。摺動子6cが始点側端子6aの位置に
あると後段の各回路への出力レベルは最大となシ、終点
側島゛、1子6bの方向へ摺動すると減少し、終点側端
子6bでは基準電位点となる。In FIG. 1, 2 is a bypass filter, 6 is a volume for adjusting the frequency characteristic, and 7 is a volume for adjusting the frequency characteristic. Poly for changing frequency characteristics, -Muro and sound fk
? A i running ha? Ream 7 is a rotary variable resistor Z:)
When it is formed coaxially and coaxially clockwise, "1" 6
c and 7c are from the starting point side terminals 6a, 7a to the ending point side terminal 6
b, slide in direction 7b. The audio signal input from the 9111i child 1 is passed through the high-speed filter through the amplifier 5 to the starting point 1+10ψ of the IP filter for changing frequency characteristics.
1°M is sent to the child 6a. The end point side terminal 6b is connected to the reference potential point. When the slider 6c is at the position of the starting point side terminal 6a, the output level to each subsequent circuit is at its maximum, but when it slides toward the end point side island, the first child 6b, it decreases, and at the end point side terminal 6b, the output level is the maximum. It becomes the reference potential point.
アンプ10の入力4JIljは端子lと接続され出力側
は抵抗R2を介して音量調節用ボIJ、−ム7の終点側
7b″と接続されている。周波数行性変更用、I?クリ
−ム6の慴動子6cは抵抗R1を介して音量調節用ボリ
ューム7の終点側タイ1シ子7bと接続されている。ア
ンプ10は標皐的周波数特性でn」聴周波数全域を増幅
する。The input 4JIlj of the amplifier 10 is connected to the terminal 1, and the output side is connected to the end point side 7b'' of the volume control volume IJ, 7 through the resistor R2. The transducer 6c of No. 6 is connected to the terminal terminal 7b of the volume control volume 7 through a resistor R1.The amplifier 10 amplifies the entire range of audible frequencies by a typical frequency characteristic.
ここで、副骨調節用ボリューム7のつまみを時計方向に
回転し音量全最大にすると慴動子7cと終点I11]ψ
;11子7bとが接触し、)^」波数特性変更用ポリー
−ム6のjS動子6cも終点側端子6bと接触する。こ
のため、摺動子7b(′こIまアンプ10全1)、土山
した音声信号だけが送出され周波数!庁仕は;電比しな
い。音量調l力j用?リー−ム7を反01計方向に回転
すると音量は不音°量となる。音!・:が小ft−r、
’:となると周波数特性変更用s; リーーム6の摺1
110子6Cは始点ml 九″6子6aの方向へjS動
するからノ・イパスフィルタ2を介した高域部分のみが
増IIr、XさiL抵抗R1を介して加算されたことに
lシ周波数!11′性は高域側が強調される。このため
、フレッチャーマンソン特性に係わる聴感の低下は1l
ii正さiする。Here, if you turn the knob of the accessory bone adjustment volume 7 clockwise to make the volume maximum, the slider 7c and the end point I11]ψ
; 11 contacts 7b, )^'' jS mover 6c of the wave number characteristic changing polymer 6 also comes into contact with the end point side terminal 6b. For this reason, the slider 7b (all amplifiers 10 and 10) sends out only the low-frequency audio signal. Government officials don't use telephones. For volume adjustment l force j? When the ream 7 is rotated in the counterclockwise direction, the volume becomes silent. sound!・: is small ft-r,
': then s for changing frequency characteristics; Ream 6 slide 1
Since the 110 element 6C moves in the direction of the starting point ml 9'' 6 element 6a, only the high frequency portion through the pass filter 2 is increased IIr, and is added via the resistor R1. !11′ emphasizes the high frequency side.For this reason, the decrease in audibility related to Fletcher Munson characteristics is 1l.
ii to be correct.
第2図はラウドネスコントロール回シ”11の別例であ
る。周波数特性変更回路11はJ、’;] i皮訣′1
テ性]5υ」・)S用継電器12の可動接点12cと1
;・υ作J22点12bの閉路で周波数特性が変更され
る。周波数・1.lI性(・り換用継電器12はアンプ
8の出力側の音声)lly、分を平均検波した信号で動
作する。なお、D1&:Lダイオード+R3+R4は抵
抗C1l:Jコンブ”ンザでJ’>る。Fig. 2 is another example of the loudness control circuit 11.The frequency characteristic changing circuit 11 is J,';]i Tip'1
Movable contacts 12c and 1 of relay 12 for S
;・Frequency characteristics are changed by the closed circuit at point 12b of υ operation J22. Frequency・1. (The switching relay 12 operates with a signal obtained by averaging detection of the audio signal on the output side of the amplifier 8). Note that D1&:L diode +R3+R4 is resistor C1l:J combination.
第1図に示す実施例では高域側の補正を行となっている
が、低域1!IIのみまたは高域、低域共に4i11正
してもよい。In the embodiment shown in FIG. 1, correction is performed on the high frequency side, but the low frequency 1! 4i11 correction may be applied only to II or to both high and low frequencies.
本ジG明になるラウドネスコントロール回路はばIJ、
−ムコントロール手段による音i、、k 、コ用j−問
に応じて周波数特性を敦更する音量追従形層波数特性変
更手段を具備した構成としであるため小音量となると周
波数11う、性が自動的に補正される特徴を有している
。このため小音量時におけるフレッテヤーマンソン特性
に係わる聴感の低下を防止できる効果がある。The loudness control circuit that will be used in this project is IJ,
- Since the structure is equipped with a volume tracking type layer wave number characteristic changing means to improve the frequency characteristics according to the sound i,, k, and j by the system control means, when the volume becomes small, the frequency 11, It has the feature that it is automatically corrected. Therefore, it is possible to prevent the hearing sensation from being deteriorated due to the Frette-Yarmanson characteristic at low volumes.
第1idは木兄りJによるラウドネスコントロール回路
の一実施例を示すブロック図、b(32図は第1図の別
例を示すブロック図である。図中符号1はgili子、
2uバイパスフイルタ、3はコンデンサ、4は抵抗、5
,8,10,13.14はアンプ、6は周波数行性変更
用がIJ、−ム、7は音量調節用yl?リーーム、9は
スピーカ、11は周波数特性変更回路、12は周波数特
性切換用継電器である。
特許出願人 八重洲無線株式会社
第 1 図
第2図1 id is a block diagram showing an embodiment of the loudness control circuit by J. Kino, b (FIG. 32 is a block diagram showing another example of FIG.
2u bypass filter, 3 is capacitor, 4 is resistor, 5
, 8, 10, 13.14 are amplifiers, 6 is IJ for changing frequency conductivity, -mu, 7 is yl? for volume adjustment. 9 is a speaker, 11 is a frequency characteristic changing circuit, and 12 is a frequency characteristic switching relay. Patent applicant Yaesu Musen Co., Ltd. Figure 1 Figure 2
Claims (1)
変更する周波数特性変更手段を具備したラウドネスコン
トロール回路において、上記可聴周波数帯域の音量を調
節するゴリエームコントロール手段と、上記、4; リ
ュームコントロール手段による音景調節介に応じて周波
数特性を変更する音星追従形周波数特性変更手段と、を
具備し、音量に応じて可聴周波数帯域の周波数特性を変
更するよう折4成したことを特徴とするラウドネスコン
トロール回路。1. A loudness control circuit equipped with a frequency characteristic changing means for changing the frequency characteristics of high and low frequencies in the audible frequency band, comprising a goliame control means for adjusting the volume of the audible frequency band; and 4. Volume control. and a sound star following type frequency characteristic changing means for changing the frequency characteristic according to the soundscape adjustment by the means, and is characterized in that the frequency characteristic of the audible frequency band is changed according to the volume. loudness control circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58192681A JPS6084003A (en) | 1983-10-15 | 1983-10-15 | Loudness control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58192681A JPS6084003A (en) | 1983-10-15 | 1983-10-15 | Loudness control circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6084003A true JPS6084003A (en) | 1985-05-13 |
Family
ID=16295271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58192681A Pending JPS6084003A (en) | 1983-10-15 | 1983-10-15 | Loudness control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6084003A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63286014A (en) * | 1987-05-19 | 1988-11-22 | Matsushita Electric Ind Co Ltd | Circuit for correcting aural sense of audio amplifier |
JPH02821U (en) * | 1988-06-11 | 1990-01-05 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4331135Y1 (en) * | 1968-03-14 | 1968-12-18 |
-
1983
- 1983-10-15 JP JP58192681A patent/JPS6084003A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4331135Y1 (en) * | 1968-03-14 | 1968-12-18 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63286014A (en) * | 1987-05-19 | 1988-11-22 | Matsushita Electric Ind Co Ltd | Circuit for correcting aural sense of audio amplifier |
JPH02821U (en) * | 1988-06-11 | 1990-01-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6084003A (en) | Loudness control circuit | |
US4432097A (en) | Tone control circuit | |
JP4542482B2 (en) | Residual noise reduction circuit | |
JPS6158050B2 (en) | ||
JP3638442B2 (en) | Volume circuit | |
JP4404043B2 (en) | Hearing aid and hearing aid adjustment device | |
JPS5921535Y2 (en) | volume control circuit | |
JPH05347661A (en) | Telephone system | |
JP4395314B2 (en) | Tone control circuit | |
JP2830444B2 (en) | Audio signal amplification circuit | |
JPH05344583A (en) | Miniaturized electronic apparatus | |
KR920002714Y1 (en) | 3 band audio signal output circuit of v.c.r. | |
KR940004183Y1 (en) | Speaker-sound control circuit | |
JPS6029225Y2 (en) | Input switching circuit in amplifier | |
JP2831547B2 (en) | Variable loudness circuit | |
JPH0134427Y2 (en) | ||
JP2001203549A (en) | Amplifier circuit | |
JPS6123853Y2 (en) | ||
JPH0427213Y2 (en) | ||
JPH04352509A (en) | Muting circuit | |
KR970024524A (en) | Car Audio's Electronic Volume Control Device | |
JPS581561B2 (en) | On-site difficulty | |
JPS6020609A (en) | Amplifier | |
KR910006694Y1 (en) | Mic mixing level automatic control circuit for audio | |
JPH05207587A (en) | Microphone device |