在1988年5月,国家教委为音乐师资培训充实教学设备购买一批数量可观的教学用琴举行了招标会,在众多电子琴生产厂家踊跃参加的紧张竞争中,上海音乐学院、上海交通大学与某厂联合研制的“电脑电子钢琴”遥遥领先、一举中标。两校一厂联合研究的新型电脑电子钢琴是1987年通过国家级技术鉴定并投入批量生产的。它具有下列优点: 1.音高准确——传统钢琴是按十二平均律进行调音的,其高音区略偏高、低音区略偏低,偏高偏低的幅度完全符合人们艺术实践的习惯。一般的电子琴由于采用模拟电路,其高低音区之间的振动数是机械地成倍增长,无法逐音调制。而电脑电子钢琴采用了微处理器,每个键的音高均连续可调,可使其“音高曲线”调整得和传统钢琴完全一致;且一旦调准就予以固化,永不变音,也无需校音,对弹奏者的音准训练是绝对有保证的,不会对青少年 In May 1988, the State Education Commission held a public bidding ceremony for a large number of musical teaching teachers to purchase a large number of musical instruments for music teacher training. In the intense competition among many electronic piano manufacturers, Shanghai Conservatory of Music, Shanghai Jiao Tong University, Plant jointly developed by the “computer electronic piano” far ahead, won the bid in one fell swoop. The new computer electronic piano jointly researched by two schools and one factory was passed the national technical appraisal and put into mass production in 1987. It has the following advantages: 1. Pitch Accuracy - The traditional piano is tuned according to the Twelve Average Law, with its bass area slightly higher and the bass area slightly lower, higher and lower amplitude fully in line with people’s artistic practice habit. As a result of the general electronic keyboard using analog circuits, the number of vibrations between the high and low areas is mechanically doubled, can not be tone-by-modulation. The computer uses an electronic piano microprocessor, the pitch of each key are continuously adjustable, so that the “pitch curve” adjusted exactly the same as the traditional piano; and once adjusted to be cured, never change sound, There is no need for school-based soundtraining, and the percussion training of percussionists is absolutely guaranteed, not for teenagers