ELECTRONIC KEYBOARD INSTRUMENT

摘要

When a key depression speed and a key release speed of a key is to be detected based on a value of a counter (44) which accumulates a value every time the key passes through key switches (SW1, SW2), a number of digits of data indicating the key depression speed, a unit of the data being a bit and a number of digits of data indicating the key release speed, a unit of the data being a bit, are made the same.

主权项

1. An electronic keyboard instrument comprising:
a plurality of keys; a plurality of key switches, at least two of said plurality of key switches provided per each of said plurality of keys; a counter accumulating a value in correspondence with input of a signal in a period including at least respective periods of a key depression speed detection period being a period determined in correspondence with a timing at which said key is detected by said key switch corresponding to said key, the period being a period for detecting a key depression speed of said key, and a key release speed detection period being a period determined in correspondence with a timing at which said key is detected by said key switch corresponding to said key, the period being a period for detecting a key release speed of said key; a key speed detection section performing detecting the key depression speed of said key based on a cumulative value of said counter in the key depression speed detection period and detecting the key release speed of said key based on a cumulative value of said counter in the key release speed detection period; and a sound generation control section controlling at least either one of a volume and a tone of a musical sound to generate, in correspondence with the key depression speed and the key release speed detected by said key speed detection section, wherein a maximum value of the key release speed detection period is longer than a maximum value of the key depression speed detection period, and wherein said key speed detection section makes a resolution of the key release speed lower than a resolution of the key depression speed so that a number of digits of data indicating the key depression speed, a unit of the data being a bit, and a number of digits of data indicating the key release speed, a unit of the data being a bit, become the same.