| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a coefficient measurement apparatus, an effect impartment apparatus, and a musical sound generating apparatus using the effect impartment apparatus, which can faithfully reproduce resonance of an acoustic musical instrument without the need to measure impulse response. <P>SOLUTION: An FIR filter 21 simulates a transfer function of an acoustic path from a guitar 1 to a microphone 3, and generates an output signal by filtering an audio signal detected by a pickup 11. An adder 22 subtracts the output signal from a microphone-acquired signal, and outputs an error signal. The FIR filter 21 updates the transfer function by inputting the error signal. The output signal which simulates the microphone-acquired signal, is made closer to the microphone-acquired signal each time by the FIR filter 21. Thereby, a signal can be output which reproduces body resonance and reverberation sound of the guitar 1, and which reproduces resonance feeling such as so-called box sound. <P>COPYRIGHT: (C)2009,JPO&INPIT |
