发明名称 |
Data reduction for a musical instrument using stored waveforms |
摘要 |
A keyboard operated musical instrument is disclosed in which the musical tones are generated by reading out data values stored in a waveshape memory. The number of stored data points is reduced by storing the data values in segments corresponding to one-half of the number of data points for a period of a waveshape. By using synthesized data having a symmetry about the midpoint the second half of the waveshape is recovered by a forward and backward memory address read of each waveshape segment. After reading each segment a predetermined number of cycles, an abrupt jump is made to the next segment of waveshape data points.
|
申请公布号 |
US4683793(A) |
申请公布日期 |
1987.08.04 |
申请号 |
US19860827983 |
申请日期 |
1986.02.10 |
申请人 |
KAWAI MUSICAL INSTRUMENT MFG. CO., LTD. |
发明人 |
DEUTSCH, RALPH |
分类号 |
G10H7/00;G10H7/02;G10H7/06;(IPC1-7):G10H7/00 |
主分类号 |
G10H7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|