KR910004455Y1 - Level select frequency boost circuit for acoustic device - Google Patents

Level select frequency boost circuit for acoustic device Download PDF

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Publication number
KR910004455Y1
KR910004455Y1 KR2019880020728U KR880020728U KR910004455Y1 KR 910004455 Y1 KR910004455 Y1 KR 910004455Y1 KR 2019880020728 U KR2019880020728 U KR 2019880020728U KR 880020728 U KR880020728 U KR 880020728U KR 910004455 Y1 KR910004455 Y1 KR 910004455Y1
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level
input
sound
selection switch
level selection
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KR900013615U (en
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신해성
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삼성전자 주식회사
안시환
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/008—Visual indication of individual signal levels

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Electronic Switches (AREA)

Abstract

내용 없음.No content.

Description

음향기기의 레벨선택주파수 부스트(BOOST)회로Level selection frequency boost circuit of sound equipment

첨부도면은 본 고안의 실시회로도.The accompanying drawings are embodiments of the present invention.

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

SW : 레벨선택스위치 R4, R8: 저항SW: Level selector switch R 4 , R 8 : Resistance

C8: 콘덴서 TR : 트랜지스터C 8 : Capacitor TR: Transistor

4 : 스위칭부 5 : 특정주파수선택부4: switching part 5: specific frequency selection part

본 고안은 각종 음향기기, 특히 LED 레벨미터가 부설된 음향기기에 있어서, 부스트(BOOST)시킬 주파수를 입력신호원의 레벨에 따라 주신호음에 혼합시킴으로써 현장감있는 스피커음이 출력되도록 한 레벨선택주파수 부스트회로에 관한 것이다.According to the present invention, in a variety of sound devices, especially sound devices equipped with LED level meters, the frequency to be boosted is mixed with the main signal sound according to the level of the input signal source so as to output the speaker sound with a realistic sense. It is about a circuit.

종래의 음향기기의 특정주파수 보상회로는 입력신호원의 레벨에 관계없이 무조건 입력신호를 보상시키도록 되어있기 때문에 스피커를 통해 출력되는 음이 단조롭게 되는 폐단이 있었다.Since the specific frequency compensation circuit of the conventional sound equipment is designed to compensate the input signal unconditionally regardless of the level of the input signal source, the sound output through the speaker has become monotonous.

본 고안의 목적은 이와같은 단점을 해결하기 위하여 음향기기의 레벨미터회로에서 분류되는 입력신호원의 레벨에 따라 부스트되는 주파수를 메인앰프에 입력시켜 주신호음에 혼합시킴으로서 스피커출력음이 현장감있게 확산되도록 한 레벨선택주파수부스트 회로를 제공하기 위한 것으로서, 이하 본 고안의 기술적 구성 및 작용효과를 첨부도면에 의해 상세히 설명한다.The purpose of the present invention is to solve the above disadvantages by inputting the boosted frequency according to the level of the input signal source classified in the level meter circuit of the sound equipment into the main amplifier to mix the main signal sound so that the speaker output sound is spread realistically In order to provide a level selection frequency boost circuit, the technical configuration and operation effects of the present invention will be described in detail with reference to the accompanying drawings.

본 고안의 회로는 통상의 레벨미터용 IC(3)에 연결된 통상의 레벨표시용 LED(D4-D6)의 각 바이어스전원을 선택하는 레벨선택스위치(SW)와, 이 레벨선택스위치(SW)를 통한 입력전원에 의해 제어되어 통상의 특정주파수선택부(5)로 공급되는 B+구동전원을 스위칭하는 스위칭부(4)로 구성된다.The circuit of the present invention comprises a level selector switch (SW) for selecting each bias power supply of the normal level display LEDs (D 4 -D 6 ) connected to a conventional level meter IC (3), and the level selector switch (SW). It is composed of a switching unit 4 that is controlled by the input power through the () to switch the B + drive power supplied to the conventional specific frequency selection unit (5).

본 고안의 실시예에서는 상기의 스위칭부(4)가 상기의 레벨선택 스위치(SW)를 통한 입력전원을 일정시간지연시키는 저항(R4) 및 콘덴서(C8)로 된 시정수회로와 이 시정수회로의 출력을 그 베이스입력으로 하여 통상의 특정주파수선택부(5)로 공급되는 B+전원을 스위칭제어하도록 된 트랜지스터(TR)로 구성된다.In an embodiment of the present invention, the switching unit 4 includes a time constant circuit including a resistor (R 4 ) and a capacitor (C 8 ) for delaying the input power through the level selection switch (SW) for a predetermined time. The transistor TR is configured to switch and control the B + power supplied to the normal specific frequency selector 5 by using the output of the several circuits as its base input.

미설명 부호중 1, 2는 각각 라디오신호 및 테이프신호 입력단자, R1-R3,R5는 저항, D1, D2는 다이오드, C1-C7은 결합콘덴서, VR은 가변저항, D3는 LED, AMP1,AMP2는 각각 메인앰프 및 저역부스트 앰프, SP는 스피커, Q1-Q4는 레벨미터용 IC(3)의 각 출력단이다.1 and 2 are the radio and tape signal input terminals, R 1 -R 3 and R 5 are resistors, D 1 and D 2 are diodes, C 1 -C 7 are coupling capacitors, VR is variable resistor, D 3 is the LED, AMP 1 , AMP 2 is the main amplifier and low-pass boost amplifier, SP is the speaker, and Q 1 -Q 4 are the output terminals of the level meter IC (3).

이와같이 구성되는 본 고안에 있어서, 각 다이오드(D1)(D2)를 통해 선택적으로 입력되는 라디오신호 또는 테이프신호는 결합콘덴서(C2)와 레벨조정용 가변저항(VR) 및 결합콘덴서(C3)를 차례로 통해 메인앰프(AMP1)로 입력되어 신호증폭된 후 다시 결합콘덴서(C7)를 통해 스피커(SP)로 출력된다.In the present invention configured as described above, the radio signal or tape signal selectively input through each diode (D 1 ) (D 2 ) is a coupling capacitor (C 2 ), a variable resistor (VR) for adjusting the level and a coupling capacitor (C 3). ) Is input to the main amplifier (AMP 1 ) in turn and is amplified and then output to the speaker (SP) through the coupling capacitor (C 7 ).

또한, 다이오드(D1)(D2)를 통해 입력되는 라디오신호 또는 테이프신호는 저항(R1) 및 결합콘덴서(C1)를 통해 레벨미터용 IC(3)로도 입력되는데, 이때 레벨미터용 IC(3)의 각 출력단자(Q1-Q4)은 입력신호의 레벨에 따라 선택적으로 '로우'레벨로 됨으로써 각 출력단(Q1-Q4)에 연결된 레벨표시용 LED(D3-D6)가 선택적으로 점등되어 입력신호의 레벨상태를 표시하게 된다.In addition, the radio signal or the tape signal input through the diode (D 1 ) (D 2 ) is also input to the level meter IC (3) through the resistor (R 1 ) and the coupling capacitor (C 1 ), where the level meter Each output terminal (Q 1 -Q 4 ) of the IC (3) is selectively 'low' level according to the level of the input signal, so that the level display LED (D 3 -D) connected to each output terminal (Q 1 -Q 4 ) 6 ) lights up selectively to indicate the level of the input signal.

본 고안의 레벨선택스위치(SW)는 이와같이 입력신호레벨에 따라 점소등되는 레벨표시용 LED(D4-D6)의 바이어스전원전압을 선택하여 스위칭부(4)에 인가시키게 되는데, 이 레벨선택스위치(SW)에 접속된 레벨미터용 IC(3)의 출력단이 '로우'레벨로 되어 이 출력단에 연결된 레벨표시용 LED가 점등될때 스위칭부(4)내의 트랜지스터(TR)가 '턴온'되고, 이에 의해 B+전원이 이 트랜지스터(TR)와 전압강하용 저항(R5)을 통해 특정주파수선택부(5)내의 저역부스트앰프(AMP2)로 공급된다.The level selection switch SW of the present invention selects the bias power supply voltage of the level display LED (D 4 -D 6 ) that is turned on according to the input signal level and applies it to the switching unit 4. When the output terminal of the level meter IC 3 connected to the switch SW is at the 'low' level and the level display LED connected to the output terminal is lit, the transistor TR in the switching section 4 is 'turned on', Thereby, the B + power supply is supplied to the low pass amplifier AMP 2 in the specific frequency selector 5 through the transistor TR and the voltage drop resistor R 5 .

따라서, 이 저역부스트앰프(AMP2)가 동작하여 레벨선택스위치(SW)에 의해 선택됨 음의 레벨에 따라 부스트될 저역주파수가 이 저역부스트앰프(AMP2)에 의해 증폭된 상태에서 메인앰프(AMP1)로 부궤환입력됨으로서 스피커(SP)를 통해서는 반사음등과 같이 현장감있는 출력음을 얻을 수 있게 된다.Thus, the low boost amplifier (AMP 2) is operating in a low frequency to be boosted in accordance with the level of a selected sound by the level selection switch (SW) is a low boost amplifier main amplifier from the amplified state by (AMP 2) (AMP By 1 ) negative feedback input, the speaker SP obtains a realistic output sound such as a reflected sound.

또한, 레벨선택스위치(SW)에 의해 선택된 레벨음의 출력이 순간적일 경우 이에 대응하는 레벨표시용 LED의 점등도 순간적으로 되는데, 이때 레벨선택스위치(SW)를 통해 스위칭부(4)내의 트랜지스터(TR)의 베이스로 인가되는 바이어스전압은 저항(R4) 및 콘덴서(C8)로 된 시정수회로의 충방전작용에 의해 일정시간 지연됨으로서 이 트랜지스터(TR)의 '턴온'동작을 지연시키게 된다. 따라서 특정주파수선택부(5)에서 증폭되는 해당 레벨의 저역주파수음도 메인앰프(AMP1)에서 증폭되는 주신호음보다 약간 지연된 상태에서 부궤환입력되므로 스피커(SP)를 통해 출력되는 음이 확산되는 청각적효과를 얻을 수 있다.In addition, when the output of the level sound selected by the level selection switch SW is instantaneous, the corresponding level display LED is turned on instantaneously. At this time, the transistors in the switching unit 4 are switched through the level selection switch SW. The bias voltage applied to the base of TR is delayed for a certain time by the charging / discharging action of the time constant circuit composed of the resistor R 4 and the capacitor C 8 , thereby delaying the 'turn-on' operation of the transistor TR. . Therefore, the low frequency sound of the corresponding level amplified by the specific frequency selector 5 is also negatively input in the state of being delayed slightly from the main signal amplified by the main amplifier AMP 1 , so that the sound output through the speaker SP is spread and auditory. The enemy effect can be obtained.

이상과 같이 본 고안의 회로에 의하면 부스트시킬 음을 입력신호원의 레벨에 따라 주신호음에 혼합시키게 되므로 현장감있는 스피커출력음을 얻을 수 있는 잇점이 있다.As described above, according to the circuit of the present invention, the sound to be boosted is mixed with the main signal sound according to the level of the input signal source.

Claims (2)

통상의 레벨미터용 IC(3)에 연결된 통상의 레벨표시용 LED(D4-D6)의 각 바이어스전원을 선택하는 레벨선택스위치(SW)와, 이 레벨선택스위치(SW)를 통한 입력전원에 의해 제어되어 통상의 특정주파수선택부(5)로 공급되는 B+구동전원을 스위칭하는 스위칭부(4)로 구비하여 상기의 레벨선택스위치(SW)에 의해 선택되는 입력신호의 레벨에 따라 부스트되는 주파수음을 주신호음에 혼합시키도록 구성된 것을 특징으로 하는 음향기기의 레벨선택주파수 부스트회로.A level selection switch (SW) for selecting each bias power supply of the normal level display LEDs (D 4 -D 6 ) connected to the normal level meter IC (3), and an input power supply through the level selection switch (SW). And a switching unit 4 for controlling the B + driving power supplied to the specific specific frequency selecting unit 5, which is controlled by the booster according to the level of the input signal selected by the level selection switch SW. A level selection frequency boost circuit for an acoustic apparatus, characterized in that it is configured to mix the frequency sound to be the main signal sound. 제 1 항에 있어서, 스위칭부(4)가 상기의 레벨선택스위치(SW)를 통한 입력전원을 일정시간지연시키는 저항(R4) 및 콘덴서(C8)로 된 시정수회로와 이 시정수회로의 출력을 그 베이스입력으로 하여 통상의 특정주파수선택부(5)로 공급되는 B+전원을 스위칭제어하도록 된 트랜지스터(TR)로 구성된 것을 특징으로 하는 음향기기의 레벨선택주파수 부스트회로.2. The time constant circuit as claimed in claim 1, wherein the switching section (4) comprises a resistor (R 4 ) and a capacitor (C 8 ) for delaying the input power through the level selection switch (SW) for a predetermined time. And a transistor (TR) for switching control of B + power supplied to an ordinary specific frequency selector (5) with the output of the base input as its base input.
KR2019880020728U 1988-12-15 1988-12-15 Level select frequency boost circuit for acoustic device KR910004455Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019880020728U KR910004455Y1 (en) 1988-12-15 1988-12-15 Level select frequency boost circuit for acoustic device

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Application Number Priority Date Filing Date Title
KR2019880020728U KR910004455Y1 (en) 1988-12-15 1988-12-15 Level select frequency boost circuit for acoustic device

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KR900013615U KR900013615U (en) 1990-07-05
KR910004455Y1 true KR910004455Y1 (en) 1991-06-29

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