KR910001642A - Automatic Envelope Changer for Electronic Instruments - Google Patents

Automatic Envelope Changer for Electronic Instruments Download PDF

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Publication number
KR910001642A
KR910001642A KR1019890009420A KR890009420A KR910001642A KR 910001642 A KR910001642 A KR 910001642A KR 1019890009420 A KR1019890009420 A KR 1019890009420A KR 890009420 A KR890009420 A KR 890009420A KR 910001642 A KR910001642 A KR 910001642A
Authority
KR
South Korea
Prior art keywords
counter
changer
block
outputting
automatic envelope
Prior art date
Application number
KR1019890009420A
Other languages
Korean (ko)
Inventor
이근춘
Original Assignee
이헌조
주식회사 금성사
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 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019890009420A priority Critical patent/KR910001642A/en
Publication of KR910001642A publication Critical patent/KR910001642A/en

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Abstract

내용 없음No content

Description

전자악기의 자동 엔벨로프 변화장치Automatic Envelope Changer for Electronic Instruments

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

제1도는 기본적인 ADSR엔밸로프 파형도.1 is a basic ADSR envelope waveform diagram.

제2도는 기본적인 PCM키보드 블록도.2 is a basic PCM keyboard block diagram.

제3도는 본 발명의 블록도.3 is a block diagram of the present invention.

제4도는 본 발명의 회로도.4 is a circuit diagram of the present invention.

Claims (2)

전자악기의 자동엔벨로프 변화장치에 있어서, 메모리로부터의 PCM정보는 DAC를 거쳐 감쇄기 블럭에 의해 아날로그 출력하고, 감쇄기 블록에는 MPU로부터 소정제어신호를 받는 업/다운 카운터블록 신호가 연결되고, 업/다운 카운터 블록의 카운트클록은 발진기와 MPU의 카운터 신호를 받는 프로그래머블 주파수 분배기에 의해 얻어지는 구성으로 된 것을 특징으로 하는 전자악기의 자동 엔밸로프 변화장치.In the automatic envelope changer of an electronic musical instrument, the PCM information from the memory is analog output by the attenuator block via the DAC, and the attenuator block is connected with an up / down counter block signal which receives a predetermined control signal from the MPU, A count block of a counter block is an automatic envelope changer of an electronic musical instrument, characterized in that it is configured by a programmable frequency divider receiving a counter signal of an oscillator and an MPU. 전자악기의 자동엔밸로프변화장치 운영 방법에 있어서, A.D.S.R 각 부분의 사간 정보 및 레벨정보 입력하는 단계와, 각 부분의 카운터 초기치와 주파수 배기값을 계산하여 어텍부분의 주파수 분배값을 출력하며, 어텍부분의 카운트 초기치 데이타 출력하는 단계와, 업/다운 비트제어와 카운터 시작하여 케리발생 여부에 따라 디케이 부분의 주파수 분배값과 카운트초기치 데이타를 출력하는 단계와, 업/다운 비트제어하고 브로우 발생 여부에 따라 상기 동일 방법으로 제거구간까지 진행토록 하며 이어서 카운터 정지하는 단계로 이루어지는 전자악기의 자동 엔밸로프 변화장치 운영방법.A method for operating an automatic envelope changer of an electronic musical instrument, the method comprising: inputting time information and level information of each part of the ADSR, calculating a counter initial value and a frequency exhaust value of each part, and outputting a frequency distribution value of the attack part; Outputting the count initial value data of the attack part, starting the up / down bit control and the counter and outputting the frequency division value and the count initial value data of the decay part according to the occurrence of the carry; In accordance with the same method to proceed to the removal section and then the counter stop operation of the automatic instrument of the electronic instrument consisting of the step of stopping the counter. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890009420A 1989-06-30 1989-06-30 Automatic Envelope Changer for Electronic Instruments KR910001642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890009420A KR910001642A (en) 1989-06-30 1989-06-30 Automatic Envelope Changer for Electronic Instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890009420A KR910001642A (en) 1989-06-30 1989-06-30 Automatic Envelope Changer for Electronic Instruments

Publications (1)

Publication Number Publication Date
KR910001642A true KR910001642A (en) 1991-01-31

Family

ID=68084125

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890009420A KR910001642A (en) 1989-06-30 1989-06-30 Automatic Envelope Changer for Electronic Instruments

Country Status (1)

Country Link
KR (1) KR910001642A (en)

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