公开(公告)号：US3647927A

公开(公告)日：1972-03-07

申请号：US3647927D

申请日：1970-12-11

Applicant: MATTEL INC

Inventor： CHANG RICHARD S ,  CUTLER STANLEY ,  BRANCHE HARVEY W LA ,  PEARLMAN MARSHALL B ,  RYAN JOHN W ,  TOY M RAYMOND

IPC: G10H3/06 ,  G10H1/02

CPC classification number: G10H3/06

Abstract: An organ of the type which utilizes an optical disc record with tracks that control the passage of light from a light source to photocells to create musical sounds, wherein the disc also has a synchronizing track to indicate the beginning of musical measures on certain music tracks and a tremolo track for creating a tremolo effect. A light-transmitting conduit has one end positioned to pick up light passing through the synchronizing track and an opposite end facing a musician seated at the organ keyboard, to provide a flash of light which can be seen by the musician at the beginning of each measure of certain musical tracks. A resistance photocell is positioned opposite the tremolo track and is connected between the photocells of the music track and the organ speaker, to provide a rapid variation in the volume of music.

Abstract translation: 一种使用光盘记录的器官，其具有控制光从光源到光电池的通过以产生音乐声音的轨道，其中该盘还具有指示某些音乐轨道上的音乐措施的开始的同步轨迹，以及 用于创建颤音效果的颤音轨道。 透光导管的一端被定位成拾取通过同步轨道的光线，以及面对坐在器官键盘上的音乐家的相对端，以提供音乐人在每个测量开始时可以看到的闪光灯 某些音乐曲目。 电阻光电管被定位在颤音轨迹的对面，并连接在音乐轨道的光电元件和器官扬声器之间，以提供音乐音量的快速变化。

公开(公告)号：US3568560A

公开(公告)日：1971-03-09

申请号：US3568560D

申请日：1968-12-18

Applicant: MATTEL INC

Inventor： CHANG RICHARD S ,  PEARLMAN MARSHALL B ,  RYAN JOHN W ,  SIOLES GEORGE W

IPC: G10D3/04 ,  G10D3/00 ,  G09B15/02

CPC classification number: G10D3/043

Abstract: Apparatus for playing chords on a guitar which enables a rapid change between chord positions, including the major, minor, and dominant seventh chords of two keys separated by five half-tones. The apparatus comprises a chording device with levers for changing between the major, minor and dominant seventh chords of one key. The chording device is shiftable laterally, and it includes cams which alter the positions at which the guitar strings are depressed when a lateral shift occurs to establish the corresponding chord in the other key.