KR870006415A - Audio frequency analyzer using microcomputer - Google Patents

Audio frequency analyzer using microcomputer Download PDF

Info

Publication number
KR870006415A
KR870006415A KR1019850010009A KR850010009A KR870006415A KR 870006415 A KR870006415 A KR 870006415A KR 1019850010009 A KR1019850010009 A KR 1019850010009A KR 850010009 A KR850010009 A KR 850010009A KR 870006415 A KR870006415 A KR 870006415A
Authority
KR
South Korea
Prior art keywords
circuit
amplifier
microcomputer
interface circuit
analog
Prior art date
Application number
KR1019850010009A
Other languages
Korean (ko)
Other versions
KR890002502B1 (en
Inventor
이경재
Original Assignee
정재은
삼성전자 주식회사
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 정재은, 삼성전자 주식회사 filed Critical 정재은
Priority to KR1019850010009A priority Critical patent/KR890002502B1/en
Publication of KR870006415A publication Critical patent/KR870006415A/en
Application granted granted Critical
Publication of KR890002502B1 publication Critical patent/KR890002502B1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Analogue/Digital Conversion (AREA)
  • Circuits Of Receivers In General (AREA)
  • Amplifiers (AREA)

Abstract

내용 없음.No content.

Description

마이크로 컴퓨터를 사용한 오디오주파수 분석기Audio frequency analyzer using microcomputer

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 회로도이다.1 is a circuit diagram of the present invention.

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

1 : 인터페이스회로 2 : 가산회로1: Interface circuit 2: Addition circuit

3 : 주파수범위 선택부 4 : 전압제어파형발생 집적회로3: frequency range selector 4: voltage control waveform generation integrated circuit

5 : 아날로그/디지탈변환기 6 : 전파필터회로5: analog / digital converter 6: radio wave filter circuit

7 : 오디오증폭기 PAi,PBi,PCi : 인터페이스회로(1)의 출력포트7: Audio amplifier PAi, PBi, PCi: Output port of interface circuit (1)

IV1~ IV8: 인버터 OP1∼OP5: OP앰프IV 1 to IV 8 : Inverter OP 1 to OP 5 : OP amplifier

Claims (1)

인터페이스회로(1)의 제1포트(PA0∼PA7)에 인버터(IV1∼IV8)와 저항(R1∼R18), 가변저항(VR1) 및 OP앰프(OP1)로 구성되는 가산회로(2)를 연결하고, 상기 인터페이스회로(1)의 제2포트(PB0∼PB4)에는 주파수 범위선택부(3)를 연결하며, 상기 가산회로(2)와 주파수범위선택부(3)에는 전압제어파형발생집적회로(4)를 각각 연결하고, 상기 전압제어파형발생집적회로(4)의 사인파출력단(SO)에는 OP앰프(OP2)를 연결하며, 상기 인터페이스회로(1)의 제3포트(PC0∼PC7)에는 아날로그/디지탈변환기(5)의 출력단(OUT)을 연결하고, 아날로그/디지탈변환기(5)의 입력단(vi)에는 OP앰프(OP3∼OP5)로 구성되는 전파필터회로(6)를 연결하며, 상기 OP앰프(OP2)의 출력단과 전파필터회로(6)사이에 측정대상용 오디오증폭기(7)를 연결하여서 된 마이크로 컴퓨터를 사용한 오디오주파수분석기.The first ports PA 0 to PA 7 of the interface circuit 1 include inverters IV 1 to IV 8 , resistors R 1 to R 18 , variable resistors VR 1 , and OP amplifiers OP 1 . The addition circuit 2 is connected, and the frequency range selector 3 is connected to the second ports PB 0 to PB 4 of the interface circuit 1, and the addition circuit 2 and the frequency range selector The voltage control waveform generation integrated circuit 4 is connected to (3), and the OP amplifier OP 2 is connected to the sine wave output terminal SO of the voltage control waveform generation integrated circuit 4, and the interface circuit 1 The output port OUT of the analog / digital converter 5 is connected to the third port (PC 0 to PC 7 ), and the OP amplifier (OP 3 to OP 5) is connected to the input terminal (vi) of the analog / digital converter 5. ) connected to a radio wave filter circuit 6, consisting of, and the OP amplifier (OP 2) audio state with the microcomputer hayeoseo connecting the measurement-object audio amplifier (7) between the output end and the radio wave filter circuit 6 of It may analyzer. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019850010009A 1985-12-30 1985-12-30 Audio frequency analysis using microcomputer KR890002502B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019850010009A KR890002502B1 (en) 1985-12-30 1985-12-30 Audio frequency analysis using microcomputer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019850010009A KR890002502B1 (en) 1985-12-30 1985-12-30 Audio frequency analysis using microcomputer

Publications (2)

Publication Number Publication Date
KR870006415A true KR870006415A (en) 1987-07-11
KR890002502B1 KR890002502B1 (en) 1989-07-10

Family

ID=19244533

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019850010009A KR890002502B1 (en) 1985-12-30 1985-12-30 Audio frequency analysis using microcomputer

Country Status (1)

Country Link
KR (1) KR890002502B1 (en)

Also Published As

Publication number Publication date
KR890002502B1 (en) 1989-07-10

Similar Documents

Publication Publication Date Title
KR940009399B1 (en) Dc blocking circuit
KR870008436A (en) Bridge amplifier
KR880006843A (en) Filter unit
KR880005744A (en) Differential amplifier
WO1997008823A3 (en) Circuit arrangement provided with a voltage - current converter
KR870006415A (en) Audio frequency analyzer using microcomputer
KR950024422A (en) Dual comparator trigger circuits with independently adjustable voltage levels
KR880008542A (en) Phase locked loop
ATE210818T1 (en) CIRCUIT ARRANGEMENT FOR THE INTRINSICALLY SAFE DETECTION OF BINARY SIGNALS OF A ENCODER
KR910007238A (en) Amplification circuit
KR920015722A (en) Demodulation Circuit of Pulse Width Modulation Signal
KR920704303A (en) Sample and Hold Circuit
AU580129B2 (en) Second order all pass network
WO1998004037A3 (en) Electronic circuit comprising complementary transconductors for filters and oscillators
SU1462461A1 (en) Demodulator/modulator
KR870006710A (en) Three phase sine wave generator
SU1062843A1 (en) Frequency multiplier
KR860009554A (en) Bit Adjustment and Filter for Digital to Analog Converters
SU1483600A1 (en) Voltage-to-current converter
DK120291D0 (en) ELEMENTS WITH VARIABLE LOSS
JPS57115009A (en) Variable resistance circuit
SU1529399A2 (en) Generator
KR930020837A (en) Low pass filter
RU2002105224A (en) Function generator
KR910017273A (en) 4-variable ripple adder

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19980626

Year of fee payment: 10

LAPS Lapse due to unpaid annual fee