| 摘要 |
<p>A circuit (32) for adding a resonance tone to a tone signal to be generated is provided. When a damper operator (26) is not operated, the resonance tone is not added but an ordinary tone signal is generated. When the damper operator (26) has been operated, the resonance tone is added so that a tone signal including the resonance tone is generated. An effect of a damper operator (26), i.e., loud pedal, in a piano, a natural musical instrument, is thereby simulated with high fidelity. The resonance tone may be produced by passing an ordinary tone signal through a filter. Alternatively, data obtained by sampling an acutally produced tone of a piano, a natural musical instrument, when a damper operator, i.e., loud pedal, is ON may be stored in a memory and a resonance tone may be generated by reading out the stored data from the memory. The signal of the generated resonance tone may be sounded by itself or after mixing with an ordinary tone signal at a suitable mixing ratio. In addition to the imparting of the resonance tone, a known control for switching of a decay rate of a tone volume envelope may be performed.</p> |
