JPS60125009A - Sound volume controller - Google Patents

Sound volume controller

Info

Publication number
JPS60125009A
JPS60125009A JP23305383A JP23305383A JPS60125009A JP S60125009 A JPS60125009 A JP S60125009A JP 23305383 A JP23305383 A JP 23305383A JP 23305383 A JP23305383 A JP 23305383A JP S60125009 A JPS60125009 A JP S60125009A
Authority
JP
Japan
Prior art keywords
capacitor
volume control
circuit
defeat
transistor
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
Application number
JP23305383A
Other languages
Japanese (ja)
Other versions
JPH0326923B2 (en
Inventor
Seiji Minami
誠治 南
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP23305383A priority Critical patent/JPS60125009A/en
Publication of JPS60125009A publication Critical patent/JPS60125009A/en
Publication of JPH0326923B2 publication Critical patent/JPH0326923B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G1/00Details of arrangements for controlling amplification
    • H03G1/02Remote control of amplification, tone, or bandwidth

Abstract

PURPOSE:To determine a ripple cutoff frequency and a defeat response speed independently of each other by connecting a resistance for ripple removal and a capacitor to the emitter of a speech defeat Tr, and further connecting a diode in parallel to the resistance. CONSTITUTION:Sound volume control pulses are smoothed by a resistance and a capacitor 2 and a ripple of the pulses is removed by a resistance 5 and a capacitor 6 through a transistor (Tr)3 to supply a DC control voltage to a sound volume control circuit 8. In this case, the diode 12 is connected in parallel to the resistance 5 to form the discharge path of the capacitor 6, and then the ripple cutoff frequency (f) is 1/(2pi.C6.R5) and the defeat response speed tau is C6.R4, thereby determining the (f) and tau independently of each other.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、パルス幅を変化させることによって音量を制
御、する機能と音声ディフィート機能とを兼ね備えた音
量°制御゛装置に関するものであご。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a volume control device that has both the function of controlling the volume by changing the pulse width and the audio defeat function.

従来例の構成とその問題点 近年、パルス幅を変化させることによ、り音量制御を行
なう回路が用いられる様になってきた。
Conventional configurations and their problems In recent years, circuits that control volume by changing the pulse width have come into use.

以下、図面を参照しながらまず従来の音量制御装置につ
いて説明する。第1図は従来の音量制御装置の回路図を
示すものである。第1図における抵抗1とコンデンサ2
で音量制御パルスを平滑し、トランジスタ3を介して抵
抗5とコンデンサ6により上記パルスによるリップルを
取り除き、音量制御回路8へその直流制御電圧を供給す
る。尚、抵抗4はトランジスタ3のエミッタ抵抗である
Hereinafter, a conventional volume control device will first be described with reference to the drawings. FIG. 1 shows a circuit diagram of a conventional volume control device. Resistor 1 and capacitor 2 in Figure 1
The volume control pulse is smoothed by the transistor 3, the ripple caused by the pulse is removed by the resistor 5 and the capacitor 6, and the DC control voltage is supplied to the volume control circuit 8. Note that the resistor 4 is the emitter resistor of the transistor 3.

一方、テレビジョン受像機等では、電源オン/オフ、チ
ャンネル切換時等にはノイズ音が発生する。そこで、第
2図に示す様にこのノイズ音を除去する為に、上記トラ
ンジスタ3のベースにディフィート回路11を接続し、
電源オン/オフ時、チャンネル切換時に発生するディフ
ィートパルスによりトランジスタ3を遮断断し音量制御
直流電圧を落とすことにより、スピーカー10より音声
出力させない回路が提案さnている。ここで、トランジ
スタ3は音量制御電圧を供給する機能と音声をディフィ
ートする機能とを一方で兼ねたものである。
On the other hand, in television receivers and the like, noise is generated when power is turned on/off, channels are changed, and the like. Therefore, as shown in FIG. 2, in order to remove this noise, a defeat circuit 11 is connected to the base of the transistor 3.
A circuit has been proposed that prevents the speaker 10 from outputting audio by cutting off the transistor 3 and reducing the volume control DC voltage by a defeat pulse generated when switching channels when the power is turned on/off. Here, the transistor 3 has both the function of supplying a volume control voltage and the function of defeating audio.

この場合、抵抗4および6の抵抗値をそれぞれR4,R
sとし、またコンデンサ6の容量を06とすると、音量
制御パルスにより発生するリップルを遮断出来る高域遮
断周波数f(adB低下する周波数)は、 f = 1 / (2π−C6・R5)である。
In this case, the resistance values of resistors 4 and 6 are R4 and R
s and the capacitance of the capacitor 6 is 06, the high cutoff frequency f (frequency that is reduced by adB) that can block ripples generated by the volume control pulse is f = 1/(2π-C6·R5).

また、音声をディフィートする応答速度は時定数をτと
するとτ−06・(R4+16)となる。
Further, the response speed for defeating the voice is τ-06·(R4+16), where τ is the time constant.

この音量制御パルスのリップルが遮断跡来ないとそのパ
ルス周波数のホイツスルノイズ音となってスピーカー1
0から出力される。従って、fは可聴周波数以下が望ま
しい。また、ディフィートする応答速度が遅いと電源オ
ン/オフあるいはチャンネル切換時のノイズ音を消去す
るのに間に合らない。
If the ripple of this volume control pulse does not show any trace of interruption, it becomes a whistling noise sound of that pulse frequency and the speaker 1
Output from 0. Therefore, it is desirable that f be below the audible frequency. Furthermore, if the response speed to defeat is slow, it will not be in time to eliminate noise when turning on/off the power or switching channels.

つま、!lll遮断周波数量を低くし、なおかつτも小
さい方がよいという相反する状態となってしまう為、従
来にはどちらも、はどほどのところで妥協点を見い出し
ていた。
wife,! Conventionally, a compromise has been found at some point in both cases because it is better to lower the Ill cutoff frequency amount and to also make τ smaller.

発明の目的 本発明は、上記従来の問題点を解消するもので、遮断周
波数fとディフィート応答速度を独立に決定出来る音量
制御装置を提供することを目的とする0 発明の構成 本発明による音量制御装置は、音量制御電圧を供給する
機能と音量をディフィートする機能を備えるトランジス
タのエミッタ回路に抵抗コンデンサからなるリップル除
去用の回路を設け、この回路の出力端を音量制御回路の
一コントロール端子に接続し、上記トランジスタのベー
スにディフィートパルスを加えるように構成するととも
に、前記回路を構成する抵抗に並列に前記コンデンサの
放電路を構成するダイオードを接続するようにしたもの
であり、遮断周波数とディフィート応答速度を独立に決
定することができ、それぞれの唇懺を満足させることが
できるものである。
OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to provide a volume control device that can independently determine the cutoff frequency f and defeat response speed. The control device includes a ripple removal circuit consisting of a resistor capacitor in the emitter circuit of a transistor that has the function of supplying a volume control voltage and the function of defeating the volume, and connects the output end of this circuit to one control terminal of the volume control circuit. It is configured to apply a defeat pulse to the base of the transistor, and a diode that constitutes the discharge path of the capacitor is connected in parallel to the resistor that constitutes the circuit, and the cut-off frequency is and defeat response speed can be determined independently, and can satisfy each taste.

実施例の説明 本発明による音量制御装置の一実施例について第3図を
参照しながら説明する。なお、図中第1図、第2図と同
一素子、回路には同一番号を付している。
DESCRIPTION OF EMBODIMENTS An embodiment of a volume control device according to the present invention will be described with reference to FIG. In the figure, the same elements and circuits as in FIGS. 1 and 2 are designated by the same numbers.

この装置は、第3図に示す様に従来の構成である第1図
の抵抗6に並列にダイオード12をコンデンサ6の放電
路を構成する様接続したものである。上記回路構成にす
れば、ホイツスルノイズ遮断周波数fは、従来と同様に f=1/(2π・C6・R5) となるが、ディフィート応答速度τにダイオード12の
効果によりτ=Ce・R4とすることが出渠る。従って
、fは抵抗5の値R5のみにより決定出来、一方、τは
抵抗4の値R4のみによシ、決定出来′Σ、つまり、f
とτとは独立に決定出来る様になる。
In this device, as shown in FIG. 3, a diode 12 is connected in parallel to the conventional resistor 6 shown in FIG. 1 to form a discharge path for the capacitor 6. With the above circuit configuration, the whistle noise cutoff frequency f becomes f=1/(2π・C6・R5) as in the conventional case, but due to the effect of diode 12 on the defect response speed τ, it becomes τ=Ce・R4. Things come up. Therefore, f can be determined only by the value R5 of the resistor 5, while τ can be determined only by the value R4 of the resistor 4'Σ, that is, f
and τ can be determined independently.

従って、ホイツスルノイズ音の発生とディ7・イード応
答速度を妥協して選ぶ必要は無くなり、両者を完全に満
足させる解決法となるものである。
Therefore, there is no need to compromise between the generation of whistle noise and the D7/Eid response speed, and a solution that completely satisfies both is provided.

なお、第1図、第3図において、7は音声復調回路、9
は音声増幅回路である。
In addition, in FIGS. 1 and 3, 7 is an audio demodulation circuit, and 9 is an audio demodulation circuit.
is an audio amplification circuit.

発明の効果 以上の様に本発明によれば、一方でパルス幅ヲ変化させ
ることによって音量を制御する機能と、もう一方で音声
ディフィートする機能とを兼ね備えた制御を行なう場合
に、音量制御パルスによるホイツスルノイズ音の遮断周
波数と音声ディフィートする応答速度を別々に独立して
決定出来る効果を有するものである。つまり、ホイツス
ルノイズ音も全く発生させない一方、音声ディフィート
応答速度もはやく出来る為、鰍ン、4−フ、bノ林切換
時等のノイズ音をも発生させないもので、両ノイズ音を
完全に除去する効果を有するものである。
Effects of the Invention As described above, according to the present invention, when performing control that combines the function of controlling the volume by changing the pulse width on the one hand and the function of defeating the audio on the other hand, the volume control pulse This has the effect that the cutoff frequency of the whistle noise sound and the response speed for voice defeat can be determined separately and independently. In other words, while it does not generate whistling noise at all, it also does not generate noise such as when switching between sardine, 4-f, and b-no-bayashi because the voice defeat response speed can be increased, completely eliminating both types of noise. It has the effect of

【図面の簡単な説明】 第1図は従来の音量制御装置の回路図、第2図は上記回
路に音声ディフィート回路を備えた装置の回路図、第3
図は本発明の一実施例における音量制御装置の回路図で
ある。 1・・・・・・抵抗、2・・・・・・コンデンサ、3・
パ・・・トランジスタ、4,5・・・・・・抵抗、6・
・・・・・コンデンサ、7・・・・・・音声復調−路、
8・・・・・・音量制御回路、9・・・・・・音声増幅
回路、1o・・・・・・スピーカー、11・・・・・・
ディフィート回路、12・・・・・・ダイオード。 代理人の氏名 弁理士 中、・1尾 敏 男 ほか1名
第1図 CC 3図 CC
[Brief explanation of the drawings] Fig. 1 is a circuit diagram of a conventional volume control device, Fig. 2 is a circuit diagram of a device equipped with an audio defeat circuit in the above circuit, and Fig. 3 is a circuit diagram of a conventional volume control device.
The figure is a circuit diagram of a volume control device according to an embodiment of the present invention. 1...Resistor, 2...Capacitor, 3.
Pa...transistor, 4,5...resistance, 6...
... Capacitor, 7 ... Audio demodulation path,
8...Volume control circuit, 9...Audio amplification circuit, 1o...Speaker, 11...
Defeat circuit, 12...diode. Name of agent: Patent attorney Toshio Ichio, and 1 other Figure 1 CC Figure 3 CC

Claims (1)

【特許請求の範囲】[Claims] パルス幅の変化する音量制御信号がベースに印加さnる
トランジスタを設け、このトランジスタのエミッタ回路
に抵抗とコンデンサから成るリップル除去回路を設け、
このリップル除去回路の出力端を音量制御回路のコント
ロール端子に接続し、前記トランジスタのベースにこの
トランジスタを遮断するためのディフィートパルスを加
えるように構成−するとともに、リップル除去回路の抵
抗に並列に前記コンデンサの放電路を構成するダイオー
ドを接続した音量制御装置。
A transistor to which a volume control signal having a varying pulse width is applied to the base is provided, and a ripple removal circuit consisting of a resistor and a capacitor is provided in the emitter circuit of this transistor.
The output terminal of this ripple removal circuit is connected to the control terminal of the volume control circuit, and the circuit is configured to apply a defeat pulse to the base of the transistor to cut off the transistor, and is connected in parallel to the resistor of the ripple removal circuit. A volume control device including a diode connected to form a discharge path of the capacitor.
JP23305383A 1983-12-09 1983-12-09 Sound volume controller Granted JPS60125009A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23305383A JPS60125009A (en) 1983-12-09 1983-12-09 Sound volume controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23305383A JPS60125009A (en) 1983-12-09 1983-12-09 Sound volume controller

Publications (2)

Publication Number Publication Date
JPS60125009A true JPS60125009A (en) 1985-07-04
JPH0326923B2 JPH0326923B2 (en) 1991-04-12

Family

ID=16949054

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23305383A Granted JPS60125009A (en) 1983-12-09 1983-12-09 Sound volume controller

Country Status (1)

Country Link
JP (1) JPS60125009A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007529764A (en) * 2004-03-09 2007-10-25 エレクトロラックス ホーム プロダクツ,インク. Device audio notification device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5271311U (en) * 1975-11-18 1977-05-27
JPS55162414U (en) * 1979-05-09 1980-11-21
JPS5736009U (en) * 1980-08-11 1982-02-25
JPS5757622U (en) * 1980-09-19 1982-04-05

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH608380A5 (en) * 1976-01-16 1979-01-15 Sulzer Ag Packing body in rectifying columns
JPS54153303A (en) * 1978-05-24 1979-12-03 Hitachi Ltd Suction pipe liner installation method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5271311U (en) * 1975-11-18 1977-05-27
JPS55162414U (en) * 1979-05-09 1980-11-21
JPS5736009U (en) * 1980-08-11 1982-02-25
JPS5757622U (en) * 1980-09-19 1982-04-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007529764A (en) * 2004-03-09 2007-10-25 エレクトロラックス ホーム プロダクツ,インク. Device audio notification device

Also Published As

Publication number Publication date
JPH0326923B2 (en) 1991-04-12

Similar Documents

Publication Publication Date Title
JPH05328481A (en) Frequency doubling and mixing circuit
KR870006800A (en) Sound field enlarger
JPS60125009A (en) Sound volume controller
JPH05115100A (en) Sound emphasis circuit
JP2830444B2 (en) Audio signal amplification circuit
JP2669445B2 (en) Audio muting circuit
JP3288154B2 (en) Sound equipment
KR910003609Y1 (en) Volume retarding time variable circuit
JPS5924225Y2 (en) Muting circuit of television receiver
JPH082119B2 (en) Sound reproduction device
KR930004653Y1 (en) Output control circuit for op amplifier
KR900006055Y1 (en) Surround sound generating circuit in audio system
JPH0713348Y2 (en) Speaker protection circuit
JPH05191155A (en) Shock sound preventing circuit
KR900004473Y1 (en) Stereo sound generating circuit
JPS6042916A (en) Sound controller
JPH0211077B2 (en)
JPS57123798A (en) Motional feedback type speaker
JPH0221835Y2 (en)
KR960003076A (en) Stereo sound level adjusting circuit of audio device
JPH05175738A (en) Shock noise prevention circuit
JPH06132749A (en) Sound field correction circuit
JPH06216684A (en) Electronic volume device
JPS625710A (en) Automatic gain control device
JPS5883414A (en) Voltage current feedback amplifier