| 摘要 |
PURPOSE:To provide the musical tone synthesizing device which synthesizes the musical tones of the harmonic overtone structure including not only the harmonic overtones of odd order but the harmonic overtones of even order as well by executing the delaying of the prescribed time corresponding to the pitch to the produced and outputting feedback signals. CONSTITUTION:N-pieces of closed loop circuits LP1 to LPN are provided in a resonance circuit 200. The closed loop circuit LP1 is constituted by the closed loop connection of an adder 201, a delaying circuit 202 variable in the delay time, a low-pass filter 203 simulating the sound loss of a resonance tube, and a multiplier 204 for executing phase inversion. The information L on the assignment of the number of the delaying stages is successively multiplied by 1/2 by cascade-connected multipliers M1 to MN-1. The information L/2, 2<2>,..., L/2N on the assignment of the number of the delaying stages are respectively outputted from the multipliers M1 to MN-1 and are supplied to the respective delaying circuits of the closed loop circuits LP1 to LPN. This resonance circuit 200 has the 1st order resonance frequency corresponding to the key cord information Kc and the higher order resonance frequency of the integer times thereof. Then, the musical tones of the timbres approximate to the timbres of a saxophone, etc., are synthesized. |
