KR940001035A

KR940001035A - Tone controls and methods of electronic instruments

Info

Publication number: KR940001035A
Application number: KR1019920010342A
Authority: KR
Inventors: 최광수
Original assignee: 이헌조; 주식회사 금성사
Priority date: 1992-06-15
Filing date: 1992-06-15
Publication date: 1994-01-10

Abstract

본 발명은 전자악기에서 출력되는 악기음의 음색 (TONE)을 연주자가 임의로 조절할수 있도록한 음색 제어장치와 그 제어 방법에 관한 것으로, 종래의 전자악기에서는 음원 IC에서 출력되는 악기음색만으로 악기 음을 출력할수 있고 음색(TONE) 조절은 제작단계에서 저역통과필터의 필터값을 이미 셋팅시켜 놓은 특성으로 고정되어 있기 때문에 연주자에 의한 음색조절은 불가능하고, 따라서 음색이 단조로운 문제점과 다양한 음색의 연주에 제한이 따르는 문제점을 해결하기 위한 것이다.The present invention relates to a tone control device and a control method for allowing the player to arbitrarily adjust the tone (TONE) of the musical instrument output from the electronic musical instrument, in the conventional electronic musical instrument to the instrument sound only output from the sound source IC It is possible to output the tone, and the tone adjustment is fixed to the characteristics that the filter value of the low pass filter is already set at the production stage, so it is impossible to control the tone by the player, thus limiting the monotonous problem and the performance of various tones. This is to solve the following problem.

본 발명은 음색조절을 위하여 필터계수를 조절해줄수 있는 디지탈 필터를 구비하고, 연주자가 음색의 가변을 실행시킬수 있는 키이와 이 키이입력 정보에 따라 현재 출력되는 악기음의 음색을 가변시키는 수단을 구비하므로서 다양한 음색의 악기음 출력과 풍부한 연주기법의 활용이 가능하도록한 것으로 전자악기에 적용한다.The present invention is provided with a digital filter that can adjust the filter coefficient for tone control, the key that allows the player to perform the change of the tone and the means for varying the tone of the currently output musical instrument according to the key input information Applied to electronic musical instruments, it enables the output of various musical instruments and the utilization of rich playing techniques.

Description

Tone controls and methods of electronic instruments

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

제2도는 본 발명에 의한 전자악기의 블록구성도,2 is a block diagram of an electronic musical instrument according to the present invention;

제3도는 본 발명에 의한 전자악기의 기능스위치부 구성도,3 is a configuration diagram of a functional switch unit of an electronic musical instrument according to the present invention;

제4도는 본 발명의 음색 제어방법의 플로우차트.4 is a flowchart of the timbre control method of the present invention.

Claims

The keyboard unit 11 for playing, the function switch unit 12 including a function key for selecting and controlling the tones of various functions such as musical instrument tone and auto accompaniment, and decoding the keyboard performance and function selection information and tone control information. Microcomputer 13 performing variable control of the output tone, the instrument sound memory 14 in which the instrument sound data is stored, and the instrument sound data 14 in the instrument sound memory 14 under the control of the microcomputer 13 to decode the instrument sound data. A sound source IC 15 for outputting an instrument sound signal corresponding to the pressed key, and a digital filter 16 for varying the filter coefficient under the control of the microcomputer 13 to vary the output instrument sound of the sound source IC 15. And an D / A converter 17 for converting the tone-controlled instrument sound signal to an analog signal, an amplifier 18 for the analog instrument sound signal, and a speaker 19 for outputting the amplified instrument sound signal. Tone control device.

The apparatus of claim 1, wherein the function switch unit (12) includes a bright key (12A) for lowering the high and low levels of the instrument sound, a mellow key (12B) for smoothly changing the timbre of the instrument sound, and a musical instrument. The low key (12C) and high key (12D) to step down the low and high band levels, respectively, and the current low and high key (12C) (12D) for the previously set bright and mellow levels. Electronic musical instrument tone control device having a memory key (12E) for adding.

A key scan process in which the filter coefficient value variable information of the digital filter 16 for changing the tone is provided in the microcomputer 13 as a data table, and the tone control keys of the function switch unit 12 decode the operation information through the key scan; A tone control method of an electronic musical instrument comprising a filter coefficient control process of changing a filter coefficient by outputting a corresponding filter coefficient value that determines the degree of acceleration or decrease of a specific frequency band attenuation amount of a tone by a digital filter (16) according to a decoding result.

The filter coefficient value according to claim 3, wherein when the bright key 12A is turned on in the key scan result filter coefficient control process, a filter coefficient value for reducing low and high frequencies is outputted, and when the mellow key 12B is turned on, the tone is smoothed overall. It outputs the filter coefficient value to alleviate and attenuates the low frequency step by step when the low key 12C is on, and decreases the high level step by step when the high key 12D is on. And specifying a filter coefficient value and outputting the added value after the addition of the filter coefficient value for the previous tone control when the memory key (12E) is turned on.

※ Note: The disclosure is based on the initial application.