| 摘要 |
<P>PROBLEM TO BE SOLVED: To display a frequency characteristic so that respective frequencies of the frequency characteristic are made correspond to respective keys constituting a keyboard. <P>SOLUTION: The frequency characteristic of an acquired musical tone signal by making respective frequencies correspond to respective pitches allocated to respective keys beforehand is displayed on a display means, which is disposed closely to or overlappedly on the keyboard composed of a plurality of keys. Since the display means has display areas corresponding to respective keys, respective keys constituting the keyboard are made corresponds to respective frequencies in the frequency characteristic displayed on the display means. Thereby, even if an operator does not know an accurate frequency, the output musical tone is made favorite one by intuitive operation as in operating the key to which familiar pitch is allocated beforehand, while referring to the frequency characteristic of the displayed musical tone signal. <P>COPYRIGHT: (C)2007,JPO&INPIT |
