US 12,334,041 B2
Electronic percussion instrument and method of detecting percussion position
Ryo Takasaki, Shizuoka (JP); and Shun Takai, Shizuoka (JP)
Assigned to Roland Corporation, Shizuoka (JP)
Filed by Roland Corporation, Shizuoka (JP)
Filed on May 17, 2021, as Appl. No. 17/321,530.
Claims priority of application No. 2020-089576 (JP), filed on May 22, 2020.
Prior Publication US 2021/0366447 A1, Nov. 25, 2021
Int. Cl. G10H 1/00 (2006.01); G10D 13/02 (2020.01); G10D 13/10 (2020.01); G10H 1/32 (2006.01); G10H 3/14 (2006.01)
CPC G10H 1/0008 (2013.01) [G10D 13/02 (2013.01); G10D 13/26 (2020.02); G10H 1/32 (2013.01); G10H 3/143 (2013.01); G10H 2220/161 (2013.01); G10H 2220/525 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electronic percussion instrument comprising:
a percussion surface;
a first sensor, a second sensor and a third sensor that detect a vibration of percussion on the percussion surface;
a first calculation unit that calculates a percussion position in a first direction which is a direction of alignment of the first sensor and the second sensor on the basis of a ratio or difference between an added-up value of output values of the first sensor within a predetermined time after the percussion surface is percussed and an added-up value of output values of the second sensor within the predetermined time;
a first determination unit that determines presence or absence of the percussion on the percussion surface on the basis of an output value of the third sensor;
virtual divided regions formed on the percussion surface, being a plurality of divided regions lined up in the first direction between the first sensor and the second sensor;
a second determination unit that determines which of the plurality of divided regions is percussed on the basis of the percussion position in the first direction; and
an instruction unit that performs an instruction for generation of musical sounds that vary depending on the plurality of divided regions or an instruction for a change of qualities of the musical sounds on the basis of a determination result of the second determination unit,
wherein the third sensor is disposed closer to a center of the percussion surface than to the first sensor and the second sensor,
wherein a starting point of the predetermined time is set to a point in time before a point in time when the first determination unit determines the presence of the percussion on the percussion surface, and
the electronic percussion instrument is configured to capable of switching between the following two modes:
a first mode in which the divided regions are formed in at least three regions of a first region formed at a center of the percussion surface, a second region formed closer to the first sensor than to the first region, and a third region formed closer to the second sensor than to the first region; and
a second mode in which the divided regions are formed in at least two regions of a fourth region formed on the first sensor side with the center of the percussion surface as a boundary and a fifth region formed on the second sensor side with the center of the percussion surface as a boundary,
wherein the first mode is set in a case where an interval of the percussion on the percussion surface is equal to or greater than a predetermined value, and the second mode is set in a case where the interval of percussion is less than the predetermined value.