KR910005222A - Pitch Correction Device for Electronic Instruments - Google Patents

Pitch Correction Device for Electronic Instruments Download PDF

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Publication number
KR910005222A
KR910005222A KR1019890012506A KR890012506A KR910005222A KR 910005222 A KR910005222 A KR 910005222A KR 1019890012506 A KR1019890012506 A KR 1019890012506A KR 890012506 A KR890012506 A KR 890012506A KR 910005222 A KR910005222 A KR 910005222A
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KR
South Korea
Prior art keywords
signal
key
value
binary counter
address
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KR1019890012506A
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Korean (ko)
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KR940009961B1 (en
Inventor
김병진
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이헌조
주식회사 금성사
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Priority to KR1019890012506A priority Critical patent/KR940009961B1/en
Publication of KR910005222A publication Critical patent/KR910005222A/en
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Publication of KR940009961B1 publication Critical patent/KR940009961B1/en

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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10HELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00Details of electrophonic musical instruments

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

내용 없음No content

Description

전자악기의 피치보정 장치Pitch Correction Device for Electronic Instruments

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 따른 전자악기의 피치 보정 장치 블럭도.2 is a block diagram of a pitch correction apparatus for an electronic musical instrument according to the present invention.

제3도는 본 발명에 따른 음정 메모리 구조도.3 is a pitch memory structure diagram according to the present invention;

제4도는 본 발명에 따른 지연분포 메모리의 구조도.4 is a structural diagram of a delay distribution memory according to the present invention.

제5도는 본 발명에 따른 지연 포인트 설정 설명 파형도.5 is a waveform diagram illustrating a delay point setting according to the present invention.

Claims (1)

눌려진 건에 해당하는 키코드 신호 KC와 건반 중 어느 한키가 눌러졌다는 키온 펄스 신호 KONP를 발생하는 건반(A)와, 상기 건반(A)로부터 키코드신호 KC를 받아 눌려진 음정에 해당하는 코드어드레스 PA와 눌려진 음정에 대응하는 지연분포 메모리(J)의 상위비트를 발생하는 디코오더(B)와, 상기 디코오더(B)의 코드 어드레스 PA를 받아 각 음정에 해당하는 비교값만을 기억하는 음정모메리(C)와, 상기 건반(A)으로부터 건반중 어느 한키가 눌러졌다는 키온펄스 신호 KONP와 클럭발생기(H)의 기준클럭 Φ와단안정 발진기의 부단자 Q의 출력을 입력으로 받는 앤드게이트(G)와, 상기 건반(A)으로부터 건반 중 어느 한키가 눌러졌다는 키온 펄스 신호 KONP와 비교기(D)의 출력신호 KSP를 입력으로 받는 오아게이트(Q)와, 상기 오아케이드(Q)의 출력을 리셋신호를받고 앤드게이트(G)의 출력을 클럭 신호로 받아 카운터값을 출력하는 2진카운터(F)와, 파우어 “온”시에 “1”(하이), “0”(로우)의 기준클럭신호 Φ를 발생하여 앤드게이트(G)의 입력으로 인가하는 클럭발생기(H)와, 상기 음정메모리(C)로부터의 비교값과 2진카운터(F)의 카운터값이 일치할 경우 일치신호 KSP를 발생하여 오아게이터(Q)의 입력단과 2진카운터(E)의 클럭단 C1으로 인가하는 비교기(D)와, 상기 비교기(D)의 일치 신호 KSP에 의해 “1”증가하고 현재 읽어내어야 할 파형메모리(M)의 어드레스가 출력되는 2진카운터(E)와, 건반(A)으로부터의 키온 펄스 신호 KONP를 리셋신호로 받고 비교기(K)로부터 클럭신호를 받아 키온시 리셋되어 SK=Φ의 값을 출력하는 2진카운터(I)와, 상기 디코오더(B)로부터 상위 어드레스를 받고 2진카운터(I)로부터 SK=Φ의 값을 받아 각음정의 첫번째 어드레스에 기억되어 있는 지연포인트 어드레스 값을 출력하는 지연분포 메모리(J)와, 상기 지연분포 메모리(J)의 지연 포인트 어드레스 값과 2진카운터(E)의 현재 읽어 내야할 파형메모리(M)의 어드레스를 받아 지연포인트 어드레스값과 파형메모리(M)의 어드레스값이 일치될 때 2진카운터(I)의 클럭단자 C1와 단안정 발진기의 (A)단자로 신호를 인가하는 비교기(K)와, 상기 비교기(K)로부터 단자(A)의 신호를 인가받고 시정수 ℓn2·R·C에 해당하는 시간동안만 부단자의 출력이 “1”(하이)값에서 "0"(로우)값으로 떨어져 앤드게이트(G)로 인가되어 ℓn2·R·C기간동안 상기 클럭 발생기(H)로부터의 기준 클럭 Φ가 2진카운터(F)로 입력되지 못하게 하여 2진카운터(F)를 중지시킴으로서 정확한 주파수를 발생하도록 단안정 발진기(L)와, 상기 2진카운터(E)의 파형 어드레스값을 입력받아 파형을 읽어내는 파형메모리(M)와, 상기 파형메모리(M)의 출력인 디지탈 정보를 아날로그 신호로 바꾸는 D/A변환기(N)와, 상기 D/A변환기(N)의 출력을 사운드 시스템(0)을 거쳐 인가받는 스피커(P)를 포함하여 구성된 것을 특징으로 하는 전자악기의 피치 보정장치.Key code signal KC corresponding to the pressed key and a key (A) for generating a keyon pulse signal KONP indicating that one of the keys is pressed, and a code address PA corresponding to the pitch pressed by receiving the key code signal KC from the key (A) Pitch memory that receives the decoder B that generates the upper bits of the delay distribution memory J corresponding to the pressed note and the code address PA of the decoder B, and stores only comparison values corresponding to each pitch. (C) and the AND gate (G) which receives as inputs the key-on pulse signal KONP indicating that one of the keys is pressed from the keyboard (A), the reference clock Φ of the clock generator (H), and the output of the sub-terminal Q of the single-stable oscillator. And an oar gate (Q) which receives a key-on pulse signal KONP and an output signal KSP of the comparator (D), indicating that one of the keys is pressed from the key (A), and a reset signal for outputting the ocade (Q). Getting and gay Binary counter (F) which receives counter (G) output as a clock signal and outputs a counter value, and generates reference clock signals (Φ) of "1" (high) and "0" (low) when power is "on" When the clock generator H applied to the input of the AND gate G and the comparison value from the pitch memory C and the counter value of the binary counter F coincide with each other, a coincidence signal KSP is generated and generated. The comparator D to be applied to the input terminal of Q and the clock terminal C1 of the binary counter E, and the waveform memory M to be read out by increasing by 1 by the coincidence signal KSP of the comparator D. 2 which outputs the value of SK = Φ by receiving the binary counter E and the key-on pulse signal KONP from the keyboard A as a reset signal, receiving the clock signal from the comparator K, and resetting at key-on when the address of? Receive the upper address from the gin counter (I) and the decoder (B), and receive the value of SK = Φ from the binary counter (I) to obtain the first pitch of each pitch. A delay distribution memory J for outputting a delay point address value stored at the first address, a delay point address value of the delay distribution memory J, and a waveform memory M to be read out of the binary counter E at present; A comparator (K) for applying a signal to the clock terminal C1 of the binary counter (I) and the (A) terminal of the monostable oscillator when the delay point address value and the address value of the waveform memory (M) coincide with each other. The negative terminal is applied only for a time corresponding to the time constant Ln 2 · R · C after receiving the signal of the terminal A from the comparator K. The output of is dropped from the value of "1" (high) to "0" (low) and applied to the AND gate G so that the reference clock? Waveform memory that reads the waveform by receiving the waveform address of the monostable oscillator (L) and the binary counter (E) so as to generate an accurate frequency by stopping the binary counter (F) by preventing input to (F). (M), a D / A converter (N) for converting digital information, which is an output of the waveform memory (M), into an analog signal, and an output of the D / A converter (N) through a sound system (0). Pitch correction device for electronic musical instruments, characterized in that configured to include a speaker (P). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890012506A 1989-08-31 1989-08-31 Pitch compensating apparatus of electronic musical instrument KR940009961B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890012506A KR940009961B1 (en) 1989-08-31 1989-08-31 Pitch compensating apparatus of electronic musical instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890012506A KR940009961B1 (en) 1989-08-31 1989-08-31 Pitch compensating apparatus of electronic musical instrument

Publications (2)

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KR910005222A true KR910005222A (en) 1991-03-30
KR940009961B1 KR940009961B1 (en) 1994-10-19

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KR1019890012506A KR940009961B1 (en) 1989-08-31 1989-08-31 Pitch compensating apparatus of electronic musical instrument

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100432633B1 (en) * 1999-08-04 2004-05-22 미크로 가부시키가이샤 Automatic mechanical pencile
KR20040043992A (en) * 2002-11-20 2004-05-27 삼성에스디아이 주식회사 Deflection apparatus for cathode ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100432633B1 (en) * 1999-08-04 2004-05-22 미크로 가부시키가이샤 Automatic mechanical pencile
KR20040043992A (en) * 2002-11-20 2004-05-27 삼성에스디아이 주식회사 Deflection apparatus for cathode ray tube

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Publication number Publication date
KR940009961B1 (en) 1994-10-19

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