| 摘要 |
PROBLEM TO BE SOLVED: To improve utility while performing operation control by properly determining uncomfortable sound and unusual sound of a device.SOLUTION: An image formation device 1 acquires operation sound and ambient sound with microphones Ma to Me, determines whether or not the operation sound is audible sound with operation sound analysis parts 32a to 32e, determines whether or not the audible sound is uncomfortable sound and determines whether or not the acquired operation sound is unusual sound with unusual sound detection parts 33a to 33e, specifies an unusual sound generating component generating the operation sound determined to be at least one of the uncomfortable sound and unusual sound when determining that the operation sound is the uncomfortable sound or unusual sound with unusual sound detection parts 33a to 33e, and restricts the operation using the unusual sound generating component and permits the normal operation for the operation using no unusual sound generating component with component replacement timing processing parts 34a to 34e and a CPU 21.SELECTED DRAWING: Figure 2 |
