JPS6351395U

JPS6351395U -

Info

Publication number: JPS6351395U
Application number: JP14519786U
Authority: JP
Priority date: 1986-09-24
Filing date: 1986-09-24
Publication date: 1988-04-07
Anticipated expiration: 2001-09-24
Also published as: JP2511395Y2

Description

[Brief explanation of the drawing]

第１図は、この考案による電子弦楽器の入力装
置を利用して構成したギターの外観平面図、第２
図は第１図におけるＡ―Ａ線断面図、第３図は第
１図のギター本体の全体回路図、第４図１はピツ
クアツプ６の出力であるアナログ信号の波形図、
第４図２はエンベロープ抽出回路１３で抽出され
るエンベロープデータの波形図、第４図３、第４
図４及び第４図５は、マイクロコンピユータ２０
とＡ／Ｄ変換器１４との間並びにマイクロコンピ
ユータ２０と楽音発生装置２７との間でのデータ
処理のタイミングを示している図、第５Ａ図及び
第５Ｂ図はＡ／Ｄ変換器１４からのデイジタル信
号に基づいて、楽音発生装置２７から楽音が発生
されるまでのマイクロコンピユータ２０の動作を
示すフローチヤートである。１……フレツト部、２……胴部、３……フレツ
ト弦、５……トリガー弦、６……ピツクアツプ、
７……ケーブル、９……押釦スイツチ、１１……
可動接点、１２……固定接点、１３……エンベロ
ープ抽出回路、１４……Ａ／Ｄ変換器、２０……
マイクロコンピユータ、２１……タイマー、２２
……ＲＡＭ、２４……ゲート、２７……楽音発生
装置、３１……外部音入力端子、３２……入力増
幅器、３３……キースキヤン回路。 Figure 1 is an external plan view of a guitar constructed using the input device for an electronic stringed instrument according to this invention;
The figure is a cross-sectional view taken along the line A-A in Figure 1, Figure 3 is the overall circuit diagram of the guitar body in Figure 1, Figure 4 is a waveform diagram of the analog signal output from the pickup 6,
Fig. 4 2 is a waveform diagram of envelope data extracted by the envelope extraction circuit 13, Fig. 4 3, 4
4 and 5 show the microcomputer 20
5A and 5B are diagrams showing the timing of data processing between the A/D converter 14 and the microcomputer 20 and the musical tone generator 27. This is a flowchart showing the operation of the microcomputer 20 until a musical tone is generated from the musical tone generator 27 based on a digital signal. 1... Fret part, 2... Body part, 3... Fret string, 5... Trigger string, 6... Pick up,
7...Cable, 9...Push button switch, 11...
Movable contact, 12... Fixed contact, 13... Envelope extraction circuit, 14... A/D converter, 20...
Microcomputer, 21... Timer, 22
...RAM, 24...gate, 27...musical tone generator, 31...external sound input terminal, 32...input amplifier, 33...key scan circuit.

Claims

[Claims for Utility Model Registration] A string that is operated during performance, a detection means that detects vibrations caused by the operation of the string as an analog signal, and an envelope extraction means that extracts an envelope signal based on the output from this detection means. and analog/digital converting means for converting the signal from the envelope extracting means into a digital signal, and obtaining trigger signals for starting and ending sound generation and control data such as volume based on the digital signal from the analog/digital converting means. An input device for an electronic stringed instrument, characterized in that it is equipped with a processing means.