In a touch detection apparatus 50, the controller 51 predicts damper-on arrival time as time of arrival of generation of a damper-on event based on a period of time counted by a first counter 54 from when a second contact point 160b is turned off until when a first contact point 160a is turned off. The second counter 55 counts time to be compared to the damper-on arrival time. The comparator circuit 58 compares the time counted by the second counter 55 and the damper-on arrival time. If the time counted by the second counter 55 and the damper-on arrival time agree with each other, the comparator circuit 58 transmits a key release agreement signal triggering generation of a damper-on event to the controller 51. If the key release agreement signal is transmitted from the comparator circuit 58, the controller 51 executes control to generate a damper-on event.