| 摘要 |
PROBLEM TO BE SOLVED: To perform musical sound control with expiration, and to change a signal value corresponding to an expiratory pressure by an inspiration operation.SOLUTION: The air pressure sensor of a controller part detects an expiratory pressure and an inspiratory pressure. A correspondence relationship between a pressure value and a signal value in correspondence information is changed by an inspiration operation. In a change mode, the selection of a table is gradually switched in the order of tables TBL1→TBL2→TBL3→TBL1 as the correspondence information in a first hierarchy, and the inclination of the selected table is switched in accordance with the number of inspirations in a second hierarchy. In an output mode, a MIDI value corresponding to a positive pressure value is calculated by using the currently determined correspondence information, and it is output as a MIDI signal from a MIDI I/F(output terminal). |
