KR910002994Y1 - Low sound output level emphasis circuit - Google Patents

Low sound output level emphasis circuit Download PDF

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Publication number
KR910002994Y1
KR910002994Y1 KR2019870017022U KR870017022U KR910002994Y1 KR 910002994 Y1 KR910002994 Y1 KR 910002994Y1 KR 2019870017022 U KR2019870017022 U KR 2019870017022U KR 870017022 U KR870017022 U KR 870017022U KR 910002994 Y1 KR910002994 Y1 KR 910002994Y1
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KR
South Korea
Prior art keywords
output level
circuit
transistor
low
resistor
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KR2019870017022U
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Korean (ko)
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KR890007512U (en
Inventor
신문성
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주식회사 금성사
최근선
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Priority to KR2019870017022U priority Critical patent/KR910002994Y1/en
Publication of KR890007512U publication Critical patent/KR890007512U/en
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/035—Equalising
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control

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  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

내용 없음.No content.

Description

저음출력레벨 강조회로Low output level emphasis circuit

제1도는 본 종래의 음질보상회로도.1 is a conventional sound quality compensation circuit diagram.

제2도는 본 고안의 저음출력레벨 강조회로가 구성된 음질 보상회로도.2 is a sound quality compensation circuit diagram of the low sound output level emphasis circuit of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 그래픽 퀄라이저회로 2 : 전압제어증폭기1: Graphic equalizer circuit 2: Voltage control amplifier

SP : 스피커 SW1: 저음강조스위치SP: Speaker SW 1 : Low tone switch

VR1: 가변저항 TR1: 트랜지스터VR 1 : Variable resistor TR 1 : Transistor

본 고안은 텔레비젼 수상기 및 콤퍼넌트 시스템등의 음향기기에 있어서, 저음출력레벨을 제어하는 저음출력 레벨 강조회로에 괸한 것으로, 특히 사용자가 저음레벨을 강조하여 청위하고자 할 경우에 이를 최적의 상태를 청취할 수 있게한 저음출력레벨 강조회로에 관한 것이다.The present invention is directed to a low sound output level enhancement circuit for controlling low sound output levels in an acoustic apparatus such as a television receiver and a component system. A low sound output level enhancement circuit is provided.

종래에는 제1도에 도시한 바와같이 그래픽이퀄라이저(Fraphicequalizer) 회로(1) 및 콘덴서(C1), 저항(R1)을 통한 음성신호(AS)는 가변저항(VR1)의 가변에 따라 전압제어증폭기(2)를 통해 증폭조절되고, 그 증폭조절된 음성신호(AS)는 콘덴서 및 스피커(SP)를 통해 출력되게 구성되었으므로 사용자가 일일이 가변저항(VR1)을 가변하여 음성신호의 출력레벨을 조절해야되고, 또한 저음출력레벨을 충분히 강조하여 청취하기에는 제한이 되었으므로 사용자가 충분히 저음레벨을 강조하여 청취할 수 없는 결함이 있었다. 본 고안은 이와같은 종래의 결함을 감안하여 스위치 절환에 따라 저음레벨을 강조하여 사용자의 취향에 맞는 저음레벨을 청취할 수 있게 안출한 것으로 이를 첨부된 제2 도면에 의하여 상세히 설명하면 다음과 같다.Conventionally, as illustrated in FIG. 1 , the voice signal AS through the graphic equalizer circuit 1, the capacitor C 1 , and the resistor R 1 is controlled according to the variation of the variable resistor VR 1 . Amplification is controlled through the control amplifier (2), the amplified controlled audio signal (AS) is configured to be output through the condenser and the speaker (SP), so that the user changes the variable resistor (VR 1 ) one by one , the output level of the voice signal There was a defect that the user could not listen enough to emphasize the low sound level because it was limited to listen to the sound with enough emphasis. The present invention has been made to listen to the low level according to the user's taste by emphasizing the low level according to the switch change in view of such a conventional defect, which will be described in detail with reference to the accompanying second drawing.

제2도는 본 고안의 저음출력레벨 강조회로도로서 이에 도시한 바와같이 가변저항(VR1)의 가변에 따라 그래픽이퀄라이저 저회로(1) 및 콘덴서(C1)를 통한 음성신호(AS)가 전압 제어증폭기(2)를 통해 증폭조절되게 한 음질보상회로에 있어서, 상기 콘덴서(C1)를 통한 그래픽이퀄라이저회로(1)의 출력측을 저항(R1)을 통해 가동 단자가 상기 가변저항(VR1)에 접속된 저음강조스위치(SW1)의 일측고정단자(a1)에 접속함과 아울러 저항(R2)(R3) 및 콘덴서(C2)를 통해 트랜지스터(TR1)의 베이스에 접속하고, 그의 콜렉터는 전원단자(B+)에 접속된 저항(R4)(R5)에 접속하여 그 접속점을 콘덴서(C3)를 통해 상기 스위(SW1)의 타측 고정단자(b1)에 접속하고, 그 접속점은 저항(R6) 및 콘덴서(C4)를 통해 상기 저항(R2)(R3)의 접속점에 궤환접속하여 구성한 것이다.FIG. 2 is a low sound output level emphasis circuit diagram of the present invention, and as shown therein, the audio signal AS through the graphic equalizer low circuit 1 and the condenser C 1 is controlled by a voltage of the variable resistor VR 1 . In the sound quality compensation circuit to be amplified and controlled by the amplifier (2), the output terminal of the graphic equalizer circuit (1) through the capacitor (C 1 ) through the resistor (R 1 ) the movable terminal is the variable resistor (VR 1 ) Connected to one fixed terminal a 1 of the low tone emphasis switch SW 1 connected to the terminal, and connected to the base of the transistor TR 1 through a resistor R 2 (R 3 ) and a capacitor (C 2 ). The collector thereof is connected to a resistor R 4 (R 5 ) connected to a power supply terminal B + , and its connection point is connected to the other fixed terminal b 1 of the switch SW 1 through a capacitor C 3 . connection, and the connection point is the resistance (R 6) and a condenser (C 4) to the resistor (R 2) is configured by the connection point of the feedback connection (R 3) over that .

이와 같이 구성된 본 고안의 작용효과를 상세히 설명하면 다음과 같다.Referring to the effect of the present invention configured in this way in detail as follows.

전원단자(B+)에 전원이 인가됨과 아울러 저음강조스위치(SW1)의 가동단자를 일측고정단자(a1)에 단락시키면, 음성신호(AS)는 그래픽이퀄라이저회로(1) 및 콘덴서(C1), 저항(R1), 스위치(SW1)를 통해 가변저항(VR1)의 가변에 따라 전압제어증폭기(2)에서 증폭조절되고, 스피커(SP)로 출력되는 음성신호(AS)의 저음레벨은 종래와같이 출력된다. 그리고 저음출력을 강조하기 위하여 상기 저음강조스위치(SW1)의 가동단자를 타측고정단자(b1)에 단락시키면, 그래픽퀄라이저회로(1) 및 콘덴서(C1)를 통한 음성신호(AS)는 저항(R2)(R3) 및 콘덴서(C2)를 통하여 트랜지스터(TR1)의 베이스에 인가되므로 그 음성신호(AS)의 저음은 트랜지스터(TR1)에 의해 증폭되고, 그 증폭된 신호는 콘덴서(C1)를 통해 스위치(SW1)의 타축고정단자(b1)에 인가됨과 아울러 저항(R6) 및 콘덴서(C4)를 통해 트랜지스터(TR1)의 베이스에 궤환된다.When power is applied to the power supply terminal (B + ) and the movable terminal of the low tone emphasis switch (SW 1 ) is shorted to one fixed terminal (a 1 ), the audio signal AS is the graphic equalizer circuit (1) and the condenser (C). 1 ), the amplification control of the voltage control amplifier 2 according to the variable resistor VR 1 through the resistor R 1 and the switch SW 1 of the audio signal AS output to the speaker SP. The bass level is output as usual. In addition, when the movable terminal of the low tone emphasis switch SW 1 is shorted to the other fixed terminal b 1 to emphasize the low tone output, the voice signal AS through the graphic equalizer circuit 1 and the condenser C 1 is performed. Is applied to the base of the transistor TR 1 through a resistor R 2 (R 3 ) and a capacitor C 2 , so that the bass of the audio signal AS is amplified by the transistor TR 1 , and the amplified signal is amplified by the transistor TR 1 . The signal is applied to the other shaft fixed terminal b 1 of the switch SW 1 through the capacitor C 1 and fed back to the base of the transistor TR 1 through the resistor R 6 and the capacitor C 4 .

여기서, 상기 저항(R6) 및 콘덴서(C4)의 값을 최소가 되게 설정하고, 이때의 주파수를 f라 하면이므로 상기 저항(R6) 및 콘덴서(C4)의 값에 의해 궤환되는 음성신호(AS)의 저음레벨 강조분과 상기 저음보상분이 합성되어 트랜지스터(TR1)를 통해 증폭되고, 그 증폭된 저음레벨강조신호는 스위치(SW1)를 통한 후 가변저항VR1)의 가변에 따라 전압제어증폭기(2)를 통해 음성신호(AS)의 저음레벨 이득이 높게되므로 스피커(SP)로 저음출력레벨이 충분히 강조되어 출력된다.Here, if the values of the resistor (R 6 ) and the capacitor (C 4 ) are set to the minimum, and the frequency at this time is f Therefore, the low level enhancement portion and the low tone compensation portion of the voice signal AS fed back by the values of the resistor R 6 and the capacitor C 4 are synthesized and amplified through the transistor TR 1 , and the amplified low tone level The emphasis signal is increased through the switch SW 1 and then the low sound level gain of the audio signal AS is increased through the voltage control amplifier 2 according to the variable resistance VR 1 ). The output is highlighted.

이상에서 설명한 바와 같이 본 고안은 스위치의 절환에 따라 음성신호의 저음출력레벨을 궤환시켜 조절하므로서 사용자의 취향에 맞는 저음출력레벨로 사용자가 최적의 상태로 청취할 수 있는 효과가 있다.As described above, the present invention has an effect of allowing the user to listen in an optimal state with a low sound output level suitable for the user's taste by adjusting the low sound output level of the voice signal according to the switching of the switch.

Claims (1)

그래픽이퀄라이저회로(1) 및 콘덴서(C1)를 통한 음성신호(AS)가 전압제어증폭기(2)를 통해 증폭조절되게 한 음질 보상회로에 있어서, 상기 그래픽이퀄라이저회로(1)의 출력측의 가동단자가 상기 가변저항(VR1)에 접속된 저음강조스위치(SW1)의 일측고정단자(a1)에 접속함과 아울러 트랜지스터(TR1)의 베이스측에 접속하여 트랜지스터(TR1)의 콜렉터는 상기 스위치(SW1)의 타측 고정단자(b1)에 접속하고, 그 접속점은 저항(R6) 및 콘덴서(C4)를 통해 상기 트랜지스터(TR1)의 베이스측에 궤환접속하여 구성함을 특징으로 하는 저음 출력레벨 강조회로.A sound quality compensating circuit in which the audio signal AS through the graphic equalizer circuit 1 and the condenser C 1 is amplified and controlled by the voltage control amplifier 2, the movable terminal on the output side of the graphic equalizer circuit 1. that the collector of the variable resistor (VR 1) a low emphasized switch (SW 1) fixed terminal transistor (TR 1) and connected to the base side of the junction box and addition transistor (TR 1) to (a 1) one side of the connection to the It is connected to the other fixed terminal (b 1 ) of the switch (SW 1 ), the connection point is configured by feedback connection to the base side of the transistor (TR 1 ) through a resistor (R 6 ) and a capacitor (C 4 ) A bass output level emphasis circuit.
KR2019870017022U 1987-09-30 1987-09-30 Low sound output level emphasis circuit KR910002994Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019870017022U KR910002994Y1 (en) 1987-09-30 1987-09-30 Low sound output level emphasis circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019870017022U KR910002994Y1 (en) 1987-09-30 1987-09-30 Low sound output level emphasis circuit

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Publication Number Publication Date
KR890007512U KR890007512U (en) 1989-05-16
KR910002994Y1 true KR910002994Y1 (en) 1991-05-03

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KR2019870017022U KR910002994Y1 (en) 1987-09-30 1987-09-30 Low sound output level emphasis circuit

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KR890007512U (en) 1989-05-16

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