JPS63128598U

JPS63128598U -

Info

Publication number: JPS63128598U
Application number: JP1990387U
Authority: JP
Priority date: 1987-02-16
Filing date: 1987-02-16
Publication date: 1988-08-23

Description

[Brief explanation of the drawing]

第１図はこの考案を適用して構成した電子楽器
の全体回路図、第２図は積分周期処理のフローチ
ヤートを示している図、第３図はサンプリング処
理のフローチヤートを示している図、第４図はエ
ンベロープデータ作成処理のフローチヤートを示
している図、第５図は波形を示し、ａは入力波形
、ｂは入力波形を整流及びフイルタ処理を介した
波形、ｃは演算処理により得られたエンベロープ
波形を示す図である。１……ＣＰＵ、３……スイツチ部、４……マイ
ク、５……整流回路、６……フイルタ、８……Ａ
／Ｄ変換器、９……表示部、１０……ワーキング
メモリ、１２……波形メモリ、１３……プログラ
ムメモリ、１４……乗算部。 Fig. 1 is an overall circuit diagram of an electronic musical instrument constructed by applying this invention, Fig. 2 is a flowchart of integral period processing, and Fig. 3 is a flowchart of sampling processing. Figure 4 shows a flowchart of envelope data creation processing, Figure 5 shows waveforms, where a is the input waveform, b is the waveform obtained by rectifying and filtering the input waveform, and c is the waveform obtained by arithmetic processing. FIG. 3 is a diagram showing a generated envelope waveform. 1... CPU, 3... Switch section, 4... Microphone, 5... Rectifier circuit, 6... Filter, 8... A
/D converter, 9...display unit, 10...working memory, 12...waveform memory, 13...program memory, 14...multiplying unit.

Claims

[Scope of claim for utility model registration] (1) Sound collection means for collecting external sounds, sampling means for sampling external sounds collected by the sound collection means, and waveforms sampled by the sampling means a first storage means for storing; a sampling waveform stored in the first storage means is divided into predetermined periods; an area of the waveform is determined for each period; and an envelope waveform is created based on the area; an envelope waveform creation means for creating an envelope waveform, and a second storage means for storing an envelope waveform created by the envelope waveform creation means;
An electronic musical instrument comprising musical tone creation means for creating musical tones based on the envelope data stored in the second storage means. (2) The electronic musical instrument according to claim 1, wherein the envelope waveform creation means includes setting means for arbitrarily setting the period.