| 摘要 |
PURPOSE:To generate a musical sound which is extremely close to a rubbed string instrument electronically by providing a circulation signal path, 1st and 2nd signal delay means, an input means which composes a signal of input signals and outputs the composite signal, and a nonlinear deforming means. CONSTITUTION:The circulation signal path 21 corresponds to the string of the rubbed string instrument and a closed loop where a musical signal waveform signal circulates, and the loop consists of delay circuits 22 and 23, LPFs 24 and 25, multipliers 26 and 27, and adders 28 and 29. A signal is composed inside, respective parts are controlled with respective signals of a musical sound control signal generation part 13, and a nonlinear table 43 performs the nonlinear conversion of the signal with a specific function having hysteresis characteristics and inputs the result to a signal path 21. The LPF 45 functions to prevent oscillation, a formant filter 51 functions for the acoustic characteristics of a body, and a sound system 52 converts the input signal into an acoustic signal to generate a sound. Consequently, a scale, timbre, bow pressurization PRES, a bow speed, and other characteristics are controlled to generate a musical sound which is extremely close to the rubbed string instrument electronically. |
