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US 11,875,765 B2Granted
Electronic percussion instrument and hitting detection method
AssigneeRoland Corporation
InventorsKeita Utsumi, Yutaka Morita, Ko Imai
Life of this patent
Estimating the term…
Abstract
An electronic percussion instrument and a hitting detection method are provided. The electronic percussion instrument includes: a head of which an upper surface is formed as a hitting surface; a body part, which is cylindrical and has an opening at an upper end side, the opening is covered by the head; and a plurality of head sensors provided on an inner peripheral side of the body part and detects a hitting on the hitting surface. The plurality of head sensors are in contact with a lower surface of the head in an area in which a distance from a center of the hitting surface is 50% or more and 75% or less of a radius of the hitting surface.
Claims14
An electronic percussion instrument comprising:
- a head of which an upper surface is formed as a hitting surface;
- a body part, which is cylindrical and has an opening at an upper end side of the body part, the opening is covered by the head;
- a frame which is fixed to an inner peripheral side of the body part and faces a lower surface of the head;
- a rim sensor which is supported by the frame and detects a hitting on an edge of the body part;
- and
- a plurality of head sensors which are in contact with the lower surface of the head while being supported by the frame and detect a hitting on the hitting surface,
- wherein the rim sensor is disposed at a center on the frame,
- wherein the plurality of head sensors are disposed closer to an outer of the frame than the rim sensor and inner than an edge of the frame, and
- wherein the frame comprises a rib which protrudes upward from a bottom surface of the frame and extends in a radial direction of the frame, and a pair of fixing parts which is separated from the rib and protrudes upward more than the rib from the bottom surface of the frame, and
- wherein the head sensors are supported by the frame through a first plate fixed to be bridged over an upper ends of the pair of the fixing parts such that the first plate avoids the rib.
7 more elements
A hitting detection method of an electronic percussion instrument,
- wherein the electronic percussion instrument comprises:
- a head of which an upper surface is formed as a hitting surface;
- a body part, which is cylindrical and has an opening at an upper end side of the body part, the opening is covered by the head;
- a frame which is fixed to an inner peripheral side of the body part and faces a lower surface of the head;
- a rim sensor which is supported by the frame and detects a hitting on an edge of the body part;
- and
- a plurality of head sensors which are in contact with the lower surface of the head while being supported by the frame and detect a hitting on the hitting surface,
- wherein the rim sensor is disposed at a center on the frame,
- wherein the plurality of head sensors are disposed closer to an outer of the frame than the rim sensor and inner than an edge of the frame, and
- wherein the frame comprises a rib which protrudes upward from a bottom surface of the frame and extends in a radial direction of the frame, and a pair of fixing parts which is separated from the rib and protrudes upward more than the rib from the bottom surface of the frame,
- wherein the head sensors are supported by the frame through a first plate fixed to be bridged over an upper ends of the pair of the fixing parts such that the first plate avoids the rib,
- the hitting detection method comprising:
- detecting a hitting on the hitting surface on a basis of output values of the plurality of head sensors.
10 more elements
A hitting detection method of an electronic percussion instrument,
- wherein the electronic percussion instrument comprises:
- a head of which an upper surface is formed as a hitting surface;
- a body part, which is cylindrical and has an opening at an upper end side of the body part, the opening is covered by the head;
- a frame which is fixed to an inner peripheral side of the body part and faces a lower surface of the head;
- a rim sensor which is supported by the frame and detects a hitting on an edge of the body part;
- and
- a plurality of head sensors which are in contact with the lower surface of the head while being supported by the frame and detect a hitting on the hitting surface,
- wherein the rim sensor is disposed at a center on the frame,
- wherein the plurality of head sensors are disposed closer to an outer of the frame than the rim sensor and inner than an edge of the frame, and
- wherein the frame comprises a rib which protrudes upward from a bottom surface of the frame and extends in a radial direction of the frame, and a pair of fixing parts which is separated from the rib and protrudes upward more than the rib from the bottom surface of the frame,
- wherein the head sensors are supported by the frame through a first plate fixed to be bridged over an upper ends of the pair of the fixing parts, such that the first plate avoids the rib,
- the hitting detection method comprising:
- a first determination step of comparing a ratio or a difference between an output value of the rim sensor and output values of the head sensors with a first threshold value to determine a first playing style in which only an edge of the body part is hit and a second playing style in which the hitting surface and the edge of the body part are hit.
10 more elements
Dependencies are inferred from the claim text.