Electronic piano circuit
Frequency separator for digital musical instrument chorus effect
Method of synthesizing a musical sound
Touch responsive control system for a keyboard electronic musical instrument Patent #: 4033219
ApplicationNo. 05/773787 filed on 03/02/1977
US Classes:84/605, Read out at different rates84/623, Time varying or dynamic Fourier components84/624Modulation
ExaminersPrimary: Witkowski, Stanley J.
Attorney, Agent or Firm
International ClassesG10H 7/06 (20060101)
G10H 1/053 (20060101)
G10H 7/02 (20060101)
Foreign Application Priority Data1976-03-05 JP
AbstractA waveshape memory type electronic musical instrument produces a tone signal by cyclically reading wave value samples of a tone waveshape stored in a waveshape memory. The electronic musical instrument comprises a function generator for generating a periodic function signal which includes the mathematical product of an amplitude term varying as a function of time and a cyclic term of a selected frequency, and a multiplier for modulating a part of the tone waveshape by the periodic function signal, thereby producing a musical tone signal changing in waveshape as time lapses.