Electronic percussion instrument and percussion detection method

Abstract

The present invention provides an electronic percussion instrument and a method for detecting a strike that can improve the accuracy of detecting a strike. The extension portion constituting the outer edge of a cymbal edge frame is located radially outward relative to the outer edge of a cymbal surface frame, so that by striking the extension portion, the vibration caused by the strike is detected using a cymbal edge sensor installed on the cymbal edge frame. Thus, the presence or absence of a strike on the extension portion (cymbal edge of an electronic cymbal) can be detected by vibration detection using the cymbal edge sensor, rather than by pressure detection using a sheet sensor as in the past to detect the presence or absence of a strike on the extension portion (cymbal edge of an electronic cymbal). Therefore, even in the case where the performer holds up a drumstick and strikes the extension portion from the side or taps the extension portion lightly, the strike can be detected with good accuracy.

Description

Technical Field

[0001] The invention relates to an electronic percussion instrument and a percussion detection method, and in particular to an electronic percussion instrument and a percussion detection method capable of improving the detection accuracy of the percussion. Background Art

[0002] There is a technology for detecting a blow to the cymbal edge of an electronic cymbal. For example, Patent Document 1 describes an electronic cymbal having a structure in which a sheet sensor 7 is sandwiched between the upper surface of the cymbal edge of a frame 3 and a cover 2 covering the upper surface of the frame 3. According to the electronic cymbal, the sheet sensor 7 detects the pressure when the cymbal edge of the frame 3 (cover 2) is struck, and thus it is possible to determine whether the cymbal edge has been struck based on the detected pressure.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Laid-Open No. 2002-207481 (e.g., paragraphs 0034, 0035, Figure 1 , 2 ) Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, in the above-mentioned conventional technology, when the player raises a drumstick and strikes the cymbal edge from the side or lightly hits the cymbal edge, the sheet sensor may not be able to detect the pressure, so there is a problem that the strike to the cymbal edge cannot be detected with good accuracy.

[0008] The present invention is made to solve the above-mentioned problems, and an object of the present invention is to provide an electronic percussion instrument and a method for detecting a strike that can improve the accuracy of detecting a strike.

[0009] Technical means of solving problems

[0010] In order to achieve the above-mentioned purpose, the electronic percussion instrument of the present invention includes: a first frame, whose upper surface is configured as a striking surface; a first sensor, which is installed on the first frame and detects vibration when the first frame is struck; a second frame, which is arranged on the lower side of the first frame without contacting the first frame, and forms a cymbal edge by making the outer edge located closer to the outer peripheral side than the outer edge of the first frame; and a second sensor, which is installed on the second frame and detects vibration when the second frame is struck.

[0011] The strike detection method of the present invention is a method for detecting strikes in an electronic percussion instrument, the electronic percussion instrument comprising: a first frame, the upper surface of which is configured as a striking surface; a first sensor, which is installed on the first frame and detects vibration when the first frame is struck; a second frame, which is arranged on the lower side of the first frame in a state of not contacting the first frame, and forms a cymbal edge by making the outer edge located closer to the outer peripheral side than the outer edge of the first frame; and a second sensor, which is installed on the second frame and detects vibration when the second frame is struck, and in the strike detection method, based on the ratio or difference of the output values ​​of the first sensor and the second sensor, it is determined which frame of the first frame or the second frame is struck. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an exploded perspective view of an electronic cymbal according to an embodiment.

[0013] Figure 2 This is a cross-section of an electronic cymbal.

[0014] Figure 3 It means in Figure 2 A cross-sectional view of an electronic cymbal with the extension of the cymbal edge frame being struck.

[0015] Figure 4 This is a cross-sectional view showing an electronic cymbal in a muted playing state.

[0016] Explanation of symbols

[0017] 1: Electronic percussion instrument (electronic cymbals)

[0018] 100: Drumsticks

[0019] 2: Rod

[0020] 20: Support

[0021] 21: Felt washer

[0022] 22: Fastening nut

[0023] 3: Support rubber (elastic body)

[0024] 30, 40, 50: Through hole

[0025] 31: Slot

[0026] 4: Cymbal frame (first frame)

[0027] 41: Cymbal cup

[0028] 42: Cymbal face

[0029] 43: Slit

[0030] 5: Cymbal edge frame (second frame)

[0031] 51: Inner circumference

[0032] 52: Peripheral part

[0033] 53: Bending part

[0034] 54: Extension (cymbal edge)

[0035] 6: Cover member

[0036] 7: Membrane components

[0037] 8: Buffer material

[0038] 9: Sheet sensor (third sensor)

[0039] S1: Cymbal sensor (first sensor)

[0040] S2: Cymbal edge sensor (second sensor)

[0041] SP: Space DETAILED DESCRIPTION

[0042] Hereinafter, preferred embodiments will be described with reference to the accompanying drawings. Figure 1 and Figure 2 The structure of the electronic cymbal 1 will be described. Figure 1 is an exploded perspective view of an electronic cymbal 1 according to an embodiment. Figure 2 is a cross-sectional view of the electronic cymbal 1. Figure 2 , a cross section cut along a plane along the axis of the electronic cymbal 1 is shown. Figure 2 In order to simplify the drawings, hatching of the film member 7 is omitted.

[0043] like Figure 1 and Figure 2 As shown in the figure, the electronic cymbal 1 is a disc-shaped electronic percussion instrument that simulates an acoustic cymbal. The electronic cymbal 1 is supported by a rod 2 (see FIG. 1 ) via a supporting rubber 3. Figure 2 )support.

[0044] The rod 2 includes a support member 20 for limiting the downward displacement of the electronic cymbal 1 (see Figure 2 The support member 20 is a cylindrical body formed in a tapered shape with the front end becoming thinner toward the upper end, and is mounted on the rod 2 in a state where the downward displacement is restricted.

[0045] The support rubber 3 is formed into a cylindrical shape having a through hole 30 at the center, and is configured so that the rod 2 is passed through the through hole 30 of the support rubber 3 and the support rubber 3 is hooked on the support member 20, thereby supporting the electronic cymbal 1 by the rod 2. After the cylindrical felt washer 21 is assembled to the rod 2 in a manner overlapping with the support rubber 3 in the supported state, the fastening nut 22 is fastened to the rod 2 in a manner compressing the felt washer 21, thereby supporting the electronic cymbal 1 in a state where it can swing relative to the rod 2.

[0046] A groove 31 extending in the circumferential direction is formed on the outer peripheral surface of the support rubber 3. A pair of grooves 31 are formed on the outer peripheral surface of the support rubber 3 at a predetermined interval in the upper and lower directions, and inner edge portions of the bow frame 4 and the edge frame 5 are respectively fitted into the pair of grooves 31.

[0047] The cymbal surface frame 4 and the cymbal edge frame 5 are disk-shaped frames having a through hole 40 and a through hole 50 in the center for inserting the support rubber 3 (groove 31). The cymbal surface frame 4 and the cymbal edge frame 5 are formed using synthetic resin or fiber-reinforced resin, etc. The cymbal surface frame 4 and the cymbal edge frame 5 are mounted with a cymbal surface sensor S1 and a cymbal edge sensor S2.

[0048] The cymbal surface sensor S1 and the cymbal edge sensor S2 are piezoelectric pickups (piezoelectric elements), respectively. The cymbal surface sensor S1 detects vibration when the cymbal surface frame 4 is struck, and the cymbal edge sensor S2 detects vibration when the cymbal edge frame 5 is struck. The strikes detected by the cymbal surface sensor S1 and the cymbal edge sensor S2 are converted into electrical signals and input to a sound source device (not shown). Thus, musical sounds corresponding to the strikes on the cymbal surface frame 4 and the cymbal edge frame 5 are generated, that is, a cymbal surface sound is generated when the cymbal surface frame 4 is struck, and a cymbal edge sound is generated when the cymbal edge frame 5 is struck.

[0049] The cymbal head frame 4 is a frame constituting the substantially entire upper surface (striking surface) of the electronic cymbal 1, and the cymbal edge frame 5 is a frame constituting the cymbal edge portion on the outer edge side of the upper surface (striking surface) of the electronic cymbal 1. The cymbal head frame 4 includes a cymbal cup portion 41 simulating a bell of an acoustic cymbal and a cymbal face portion 42 simulating a cymbal head.

[0050] The cymbal cap portion 41 is formed into a bowl shape that is inclined downward from the central side of the cymbal head frame 4 toward the radial outer side, and the cymbal surface portion 42 is formed into a circular ring shape that is inclined downward from the outer edge of the cymbal cap portion 41 toward the radial outer side. A cymbal head sensor S1 is installed on the lower surface of the cymbal cap portion 41. That is, the cymbal head sensor S1 is arranged closer to the center of the rod 2 than the outer edge of the cymbal head frame 4, so that even if the cymbal head frame 4 is struck at different positions in the circumferential direction, the length of the vibration transmission path from each striking position to the cymbal head sensor S1 can be made uniform. Therefore, regardless of the different positions of the cymbal head frame 4 struck in the circumferential direction, the sensitivity distribution of the strike can be made uniform.

[0051] The cymbal edge frame 5 includes an inner peripheral portion 51 that is vertically opposed to the cymbal cup portion 41 of the cymbal bow frame 4, and an outer peripheral portion 52 that is vertically opposed to the cymbal face portion 42 of the cymbal bow frame 4. A cymbal edge sensor S2 is mounted on the lower surface of the inner peripheral portion 51. That is, the cymbal edge sensor S2 is arranged at a position overlapping with the cymbal cup portion 41 of the cymbal bow frame 4 when viewed in the vertical direction, and is closer to the center of the rod 2 than the outer edge of the cymbal edge frame 5. Therefore, regardless of the position of the cymbal edge frame 5 struck in the circumferential direction, the sensitivity distribution of striking can be made uniform.

[0052] The inner peripheral portion 51 of the cymbal edge frame 5 is formed in a bowl shape that is inclined downward from the center side of the cymbal edge frame 5 toward the radially outer side. That is, the inner peripheral portion 51 of the cymbal edge frame 5 is formed in the same shape as the cymbal cup portion 41 of the cymbal bow frame 4.

[0053] The outer peripheral portion 52 of the cymbal edge frame 5 is formed into a circular ring shape that is inclined downward from the outer edge of the inner peripheral portion 51 toward the radial outer side, and is generally formed in the same shape as the cymbal portion 42 of the cymbal head frame 4. On the other hand, the portion on the outer edge side of the outer peripheral portion 52 is slightly inclined upward in a manner close to the outer edge of the cymbal portion 42 of the cymbal head frame 4, and the curved portion 53 is curved upward from the outer edge of the outer peripheral portion 52 that is inclined upward.

[0054] The extension portion 54 extends in a flange shape toward the outer peripheral side (radially outer side) from the upper end side of the bent portion 53. The cymbal edge frame 5 is configured by integrally forming the inner peripheral portion 51, the outer peripheral portion 52, the bent portion 53, and the extension portion 54.

[0055] The extension 54 constituting the outer edge of the cymbal edge frame 5 is located on the outer peripheral side (radially outward) of the outer edge of the cymbal portion 42 of the cymbal head frame 4, and the extension 54 forms the cymbal edge of the upper surface of the electronic cymbal 1. Therefore, when the player performs a musical performance such as striking the cymbal edge of the electronic cymbal 1, the extension 54 is struck. Then, the cymbal edge sensor S2 mounted on the cymbal edge frame 5 detects vibration when the extension 54 is struck.

[0056] That is, the presence or absence of a strike on the extension portion 54 (the cymbal edge of the electronic cymbal 1) can be detected by vibration detection using the cymbal edge sensor S2, rather than by pressure detection using a sheet sensor as in the past. Therefore, even when the player holds up the drumstick 100 (see FIG. 1 ), the drumstick 100 is still held up. Figure 3 ) Even when the extension portion 54 is hit from the side or lightly tapped, the hit can be detected with good accuracy.

[0057] In addition, when the cymbal surface frame 4 and the cymbal edge frame 5 (hereinafter sometimes referred to as "each frame") are supported by the rod 2 via the support rubber 3, the frames are in a non-contact state. Therefore, it is possible to suppress the cymbal surface sensor S1 (cymbal edge sensor S2) attached to the cymbal surface frame 4 (cymbal edge frame 5) from erroneously detecting the vibration of the cymbal edge frame 5 (cymbal surface frame 4) when it is struck.

[0058] Therefore, based on the ratio or difference of the output values ​​of the cymbal bow sensor S1 and the cymbal edge sensor S2, it is determined that the frame with the larger sensor output value is struck, thereby accurately determining which frame of the cymbal bow frame 4 or the cymbal edge frame 5 (extending portion 54) is struck.

[0059] In addition, since the cymbal head frame 4 and the cymbal edge frame 5 are supported by the rod 2 via the supporting rubber 3 of the rubber-like elastic body, the vibration of each frame when being struck can be attenuated by the supporting rubber 3. Therefore, when any one of the frames is struck, the vibration can be suppressed from being transmitted to the other frame via the supporting rubber 3, so that which frame of the cymbal head frame 4 or the cymbal edge frame 5 (extending portion 54) is struck can be determined with good accuracy.

[0060] Here, the acoustic cymbal is made of metal and has a relatively low friction coefficient, so it is possible to strike the cymbal as if the drumstick were sliding on the upper surface of the acoustic cymbal. Therefore, in the present embodiment, a structure is adopted in which the upper surface or the outer peripheral surface of the extension 54 of the cymbal edge frame 5 is not covered with a cover (buffer material) such as rubber. Thus, it is possible to strike the cymbal as if the drumstick were sliding on the extension 54, thereby providing a playing feel close to that of an acoustic cymbal.

[0061] In addition, as in the present embodiment, when the extending portion 54 of the cymbal edge frame 5 is not covered with a buffer material, it is preferable to use a fiber-reinforced resin (e.g., glass-fiber-reinforced nylon) to form the cymbal edge frame 5. Thus, the strength of the cymbal edge frame 5 can be ensured, so even when the extending portion 54 is directly hit, damage to the cymbal edge frame 5 can be suppressed.

[0062] As described above, when playing an acoustic cymbal, a drumstick is sometimes struck by sliding on the upper surface, so in order to simulate the striking feeling during such playing, it is preferable not to cover the frame with a cushioning material such as rubber. However, in a structure in which only a cover is removed from the frame of an electronic cymbal and the frame is directly struck as in the past (e.g., Japanese Patent Laid-Open No. 2002-207481), the striking sound when struck with a drumstick or the like becomes louder.

[0063] That is, in the structure of the conventional electronic cymbals, there is a problem that it is difficult to obtain a playing feeling (percussion feeling) like an acoustic cymbal while reducing the percussion sound during the percussion. In contrast, in the present embodiment, a structure that can solve this problem is adopted. The structure is described below.

[0064] The upper surface of the cymbal frame 4 is covered with a cover member 6 made of a foamed resin (in this embodiment, polyurethane foam). The cover member 6 is formed into a disk shape having a through hole in the center and having a shape substantially the same as that of the cymbal frame 4, and is bonded to the cymbal frame 4 in a manner covering the upper surface of the cymbal frame 4 from the inner edge to the outer edge.

[0065] The cover member 6 is made of a foamed resin that is softer than rubber, so the impact of being struck by a drumstick or the like can be absorbed by the cover member 6. Therefore, the striking sound when the cymbal frame 4 is struck can be effectively reduced. On the other hand, the cover member 6 made of a foamed resin is easily damaged if directly struck, so the upper surface of the cover member 6 is covered with a film member 7.

[0066] The membrane member 7 is a plain woven fabric (net) formed using synthetic fibers (polyester in this embodiment). The membrane member 7 is formed into a disk shape having a through hole in the center, and covers the upper surface of the cover member 6 from the inner edge to the outer edge. The membrane member 7 formed using synthetic fibers has higher strength than the cover member 6 made of foamed resin, so the membrane member 7 can protect the cover member 6 from blows.

[0067] Furthermore, since the membrane member 7 is a plain woven fabric formed using synthetic fibers, the friction coefficient is lower than that of rubber, so that the drumstick can be struck by sliding on the upper surface of the membrane member 7, thereby providing a playing feel close to that of an acoustic cymbal.

[0068] That is, as in the present embodiment, the upper surface of the resin cymbal frame 4 is covered with a cover member 6 made of a foamed resin, and the upper surface of the member 6 is covered with a woven fabric, i.e., a membrane member 7, formed by synthetic fibers, thereby reducing the striking sound when struck while providing a playing feel like that of an acoustic cymbal.

[0069] In addition, in the state before being struck, the upper surface of the membrane member 7 is configured to be flush with the upper surface of the extension portion 54 of the cymbal edge frame 5. Thus, even when the upper surface of the electronic cymbal 1 is formed by two frames, the cymbal head frame 4 and the cymbal edge frame 5, the shape of the upper surface can be approximated to that of an acoustic cymbal.

[0070] In addition, a plurality of slits 43 are formed in the cymbal frame 4 so as to penetrate vertically (see Figure 1 ), the cymbal frame 4 is divided into a plurality of regions by the slits 43. Thus, the slits 43 block the propagation of vibrations when the cymbal frame 4 (membrane member 7) is struck, so that when the cymbal frame 4 is struck, the entire vibration of the cymbal frame 4 can be suppressed. Therefore, the struck sound when the cymbal frame 4 is struck can be more effectively reduced.

[0071] When the slit 43 is formed in the cymbal frame 4 as in the present embodiment, it is preferable to use a fiber reinforced resin (eg, glass fiber reinforced nylon) to form the cymbal frame 4. Thus, even when the slit 43 is formed to penetrate vertically, the rigidity of the cymbal frame 4 can be ensured.

[0072] As described above, when the slit 43 is formed to suppress the vibration of the entire cymbal frame 4, for example, the slit 43 may be formed in a curved shape extending in the circumferential direction. However, in such a structure, when the cymbal portion 42 of the cymbal frame 4 is struck, the transmission of vibration to the cymbal sensor S1 is easily blocked by the slit 43.

[0073] In contrast, in the present embodiment, a plurality of (12 in the present embodiment) linear slits 43 extending in the radial direction are arranged at equal intervals in the circumferential direction on the cymbal portion 42 of the cymbal head frame 4. That is, the plurality of slits 43 are formed in a radial shape centered on the cymbal cap portion 41 on which the cymbal head sensor S1 is disposed. Thus, a vibration transmission path extending in the radial direction can be formed between the plurality of slits 43, so that the vibration generated when the cymbal portion 42 of the cymbal head frame 4 is struck is easily transmitted to the cymbal head sensor S1. Therefore, compared with the case where the slits 43 are formed in a curved shape extending in the circumferential direction, the strike to the cymbal portion 42 can be detected with good accuracy.

[0074] Then, refer to Figure 3 and Figure 4 The structure of the electronic cymbal 1 will be further described. Figure 3 It means in Figure 2 A cross-sectional view of the electronic cymbal 1 in a state where the extension portion 54 of the cymbal edge frame 5 is struck, Figure 4 It is a cross-sectional view showing the electronic cymbal 1 in a state of performing a choke playing technique.

[0075] like Figure 3As shown in the figure, the inner edge portions of the cymbal frame 4 and the cymbal edge frame 5 are embedded in the rubber support rubber 3, so when the extension portion 54 of the cymbal edge frame 5 is struck by a drumstick 100 or the like, the cymbal edge frame 5 near the striking position is relatively displaced downward in a manner away from the cymbal frame 4 (see FIG. Figure 3 ). Due to the displacement of the cymbal edge frame 5, the cymbal edge frame 5 is relatively displaced in a manner approaching the cymbal surface frame 4 in a region on the opposite side of the striking position across the rod 2.

[0076] Such relative displacement of the frames approaching each other is also generated when the cymbal head frame 4 is struck. When the frames come into contact with each other due to the relative displacement, the vibration when one of the frames is struck is easily transmitted to the other frame. Therefore, in this embodiment, a buffer material 8 is arranged between the cymbal head frame 4 and the cymbal edge frame 5.

[0077] The buffer material 8 is formed in a circular ring shape that is continuous in the circumferential direction (see Figure 1 ), and is disposed between the lower surface of the outer edge side of the cymbal face portion 42 of the cymbal head frame 4 and the outer peripheral portion 52 of the cymbal edge frame 5. Thus, the contact between the frames when struck can be limited by the buffer material 8. The buffer material 8 is formed using a material having a predetermined elasticity (softer material than the frames) such as sponge, rubber, or thermoplastic elastomer, and thus can suppress the vibration when any of the frames is struck from being transmitted to the other frame via the buffer material 8. Therefore, it is possible to accurately determine which of the frames is struck.

[0078] In addition, the buffer material 8 is formed into a circular ring shape that is continuous in the circumferential direction, and in a state before striking the cymbal frame 4 or the cymbal edge frame 5 (hereinafter referred to as the "state before striking"), the buffer material 8 is in contact with the cymbal frame 4 and the cymbal edge frame 5 (the sheet sensor 9 described later). That is, the space SP between the cymbal frame 4 and the cymbal edge frame 5 is blocked by the buffer material 8, and a space SP surrounded (enclosed) by the rod 2 (support rubber 3), the cymbal frame 4, the cymbal edge frame 5, and the buffer material 8 is formed between the cymbal frame 4 and the cymbal edge frame 5.

[0079] This can prevent vibration generated when the cymbal frame 4 (membrane member 7 ) is struck from propagating in the space SP between the cymbal frame 4 and the edge frame 5 and being released to the outside of the electronic cymbal 1 , thereby more effectively reducing the struck sound generated when the cymbal frame 4 is struck.

[0080] The cushioning material 8 is bonded to the lower surface of the cymbal frame 4, but the thickness of the cushioning material 8 is formed to be thicker than the relative distance between the lower surface of the cymbal frame 4 and the upper surface of the cymbal edge frame 5. Therefore, in the state before the strike, the cushioning material 8 is compressed by a predetermined amount between the cymbal frame 4 and the cymbal edge frame 5.

[0081] Thus, the buffer material 8 can follow the displacement of the cymbal head frame 4 and the cymbal edge frame 5 away from each other, so that the space SP between the cymbal head frame 4 and the cymbal edge frame 5 can be kept blocked by the buffer material 8 (see FIG. 1 ). Figure 3 Therefore, it is possible to suppress the vibration when the cymbal frame 4 (membrane member 7) is struck from propagating in the space SP and being released to the outside, so that the struck sound when the cymbal frame 4 is struck can be more effectively reduced.

[0082] Furthermore, in the case where the space SP between the cymbal surface frame 4 and the cymbal edge frame 5 is blocked by the buffer material 8, the buffer material 8 may be bonded to the lower surface of the cymbal surface frame 4 and the upper surface of the cymbal edge frame 5 (the sheet sensor 9 described later). With the above structure, the space between the cymbal surface frame 4 and the cymbal edge frame 5 can be surely maintained by the buffer material 8.

[0083] As described above, the cushioning material 8 is compressed by the relative displacement of the cymbal head frame 4 or the cymbal edge frame 5 . Therefore, in the present embodiment, a configuration is adopted in which the compression of the cushioning material 8 is utilized to detect the muting technique.

[0084] Specifically, the sheet sensor 9 is provided between the buffer material 8 and the upper surface of the outer peripheral portion 52 of the cymbal edge frame 5. The sheet sensor 9 is a strip-shaped membrane switch (pressure sensor) that detects a pressure change.

[0085] like Figure 4 As shown in the figure, when the performer grasps the cymbal face portion 42 of the cymbal head frame 4 and the outer periphery 52 of the cymbal edge frame 5, the sheet sensor 9 is pinched by the buffer material 8 and the outer periphery 52 of the cymbal edge frame 5, and the pressure during the pinching is detected by the sheet sensor 9. Furthermore, when the pressure detected by the sheet sensor 9 reaches a predetermined pressure, the musical sound generated by the striking is attenuated (reduced or silenced). Thus, a muted playing method of silencing the electronic cymbal 1 after striking it can be simulated.

[0086] In the above case, if the acoustic cymbal is in a position where the player can grasp it, the muting technique can be performed even if the player grasps it in any position. On the other hand, in the case of a structure that detects the muting technique when the sheet sensor is pinched by a frame and a rubber cover as in the conventional electronic cymbal (for example, Japanese Patent Laid-Open No. 2002-207481), when grasping the sheet sensor at a position radially deviated from the sheet sensor, the sheet sensor cannot detect sufficient pressure. Therefore, the situation of performing the muting technique cannot be detected with good accuracy.

[0087] In contrast, as in the present embodiment, by providing the sheet sensor 9 between the cymbal edge frame 5 and the buffer material 8, even when the cymbal head frame 4 and the cymbal edge frame 5 are grasped at a position radially deviated from the sheet sensor 9 (for example, radially inward of the sheet sensor 9), the sheet sensor 9 can be pinched by the frames and the buffer material 8. Therefore, compared with conventional electronic cymbals, the area in which the muted technique can be detected can be expanded in the radial direction, and thus the situation in which the muted technique is performed can be detected with good accuracy.

[0088] In addition, the sheet sensor 9 is attached to approximately half of the circumference of the cymbal frame 5 (see Figure 1 ), the buffer material 8 pressing the sheet sensor 9 is formed into a circular ring shape that is continuous in the circumferential direction. That is, the buffer material 8 is configured to be connected continuously from one end to the other end of the sheet sensor 9 in the circumferential direction (the entire sheet sensor 9). As a result, for example, compared with the case where the buffer material 8 is intermittently in contact with the sheet sensor 9 in the circumferential direction, the pressure when the buffer material 8 is compressed can be accurately detected by the sheet sensor 9. Therefore, the case of performing the muted playing method can be detected with further good accuracy.

[0089] In addition, the pinching of the sheet sensor 9 by each frame and the buffer material 8 also occurs when either the cymbal head frame 4 or the cymbal edge frame 5 is struck. The pressure detected by the sheet sensor 9 during the strike may cause a mistaken determination that a muted playing method is being performed even though a strike is made.

[0090] In contrast, in the present embodiment, when the predetermined pressure detected by the sheet sensor 9 continues for a predetermined time (for example, 0.1 seconds), it is determined that the muting technique is being performed. That is, when the time when the sheet sensor 9 detects that the cymbal head frame 4 and the cymbal edge frame 5 are pinched (grasped) becomes longer than the predetermined time, the generated musical sound is attenuated. This can prevent the pressure detected by the sheet sensor 9 from being erroneously determined as the pressure caused by the muting technique when striking.

[0091] Although the above description has been given based on the above-mentioned embodiment, the present invention is not limited to the above-mentioned embodiment at all, and it can be easily estimated that various modifications and improvements can be made within the scope not departing from the gist of the present invention.

[0092] In the embodiment, an electronic cymbal 1 is illustrated as an example of an electronic percussion instrument, but the present invention is not necessarily limited thereto. For example, the structure of the embodiment can also be applied to an electronic pad. Therefore, for example, the cymbal surface frame 4 (first frame) and the cymbal edge frame 5 (second frame) can also be formed into a rectangular or other polygonal shape. That is, if it is an electronic instrument that generates different musical sounds according to the difference in the striking position between the upper surface of the electronic percussion instrument and the outer edge portion (cymbal edge portion) of its upper surface, the technical idea of ​​the embodiment can be applied.

[0093] In the above embodiment, the cymbal frame 4 and the cymbal edge frame 5 are supported by the rod 2 via a supporting rubber 3, respectively, but the present invention is not limited thereto. For example, the cymbal frame 4 and the cymbal edge frame 5 may be supported on the rod 2 via a single supporting rubber, or the cymbal frame 4 and the cymbal edge frame 5 may be supported on the rod 2 via a member formed of a material other than rubber (e.g., an elastomer such as synthetic rubber (elastomer)).

[0094] That is, in the above embodiment, the rubber support rubber 3 is illustrated as an example of an elastic body for supporting each frame on the rod 2, but the elastic body for supporting each frame on the rod 2 is preferably made of a material that is at least softer than each frame. This can prevent the vibration of any frame from being transmitted to the other frame via the elastic body when it is hit.

[0095] In addition, a structure may be adopted in which any one of the frames is supported on the rod 2 via an elastic body, and the other frame is bonded to one of the frames via a buffer material 8 (the upper and lower surfaces of the buffer material 8 are bonded to each frame by a double-sided tape or the like). In other words, a structure may be adopted in which only any one of the frames is supported on the rod 2, and the other frame is supported on the rod 2 via the one frame and the buffer material 8, so that the other frame does not contact the rod 2.

[0096] In the above embodiment, a piezoelectric pickup is illustrated as an example of the cymbal head sensor S1 and the cymbal edge sensor S2 for detecting the vibration of the cymbal head frame 4 and the cymbal edge frame 5, but the present invention is not limited thereto. For example, a known sensor such as a piezoelectric sensor, an electrodynamic sensor, or an electrostatic capacitance sensor may be applied as long as the sensor can detect the vibration of each frame.

[0097] In the above embodiment, the case where one cymbal surface sensor S1 and one cymbal edge sensor S2 are installed near the center of the cymbal surface frame 4 and the cymbal edge frame 5 is described, but the present invention is not limited thereto. For example, a plurality of cymbal surface sensors S1 and cymbal edge sensors S2 may be provided, respectively, and may be arranged at positions closer to the outer edge side than the center of the cymbal surface frame 4 and the cymbal edge frame 5.

[0098] In the above embodiment, the case where the slits 43 are radially formed in the cymbal portion 42 of the cymbal frame 4 (the slits 43 are formed in a straight line along the radial direction) is described, but the present invention is not necessarily limited to this. For example, the slits 43 may be a curved or straight line extending in the circumferential direction, or may be a shape obtained by combining curved lines or straight lines (for example, a wave shape or a sawtooth shape). In addition, the slits 43 may be formed in the cymbal cap portion 41 of the cymbal frame 4, or the slits 43 may be omitted.

[0099] In the above-described embodiment, the case where the extension 54 (cymbal edge portion) of the cymbal edge frame 5 is not coated with rubber (elastic body) is described, but the present invention is not necessarily limited to this. For example, the upper surface or the outer peripheral surface of the extension 54 may be coated with an elastic body such as rubber (a material softer than the cymbal edge frame 5). In this way, the striking sound when the extension 54 is struck can be reduced. In addition, in order to reduce the striking sound when the extension 54 is struck, the extension 54 (cymbal edge frame 5) may be formed using a relatively soft material, for example, a material softer than the cymbal frame 4.

[0100] In the above embodiment, the upper surface of the extension portion 54 of the cymbal edge frame 5 is described as being flush with the cymbal edge portion of the upper surface of the membrane member 7, but the present invention is not necessarily limited thereto. For example, the upper surface of the extension portion 54 may be located above or below the edge of the upper surface of the membrane member 7.

[0101] In the above embodiment, the structure in which the buffer material 8 is in contact with the cymbal surface frame 4 and the cymbal edge frame 5 (sheet sensor 9) before striking is described, but it is not necessarily limited to this. For example, the thickness of the buffer material 8 may be thinner than the interval between the cymbal surface frame 4 and the cymbal edge frame 5, and the buffer material 8 may not be in contact with the cymbal surface frame 4 or the cymbal edge frame 5 before striking. In the case of such a structure, the buffer material 8 only needs to be formed with a thickness to the extent that the frames do not contact each other when striking. In addition, the buffer material 8 may also be omitted.

[0102] In the above embodiment, the case where the buffer material 8 is formed in a circular ring shape that is continuous in the circumferential direction is described, but it is not necessarily limited to this. For example, the buffer material 8 may be formed intermittently in the circumferential direction. With the above structure, the vibration when striking either the cymbal head frame 4 or the cymbal edge frame 5 is difficult to be transmitted to the other frame via the buffer material 8.

[0103] In the above embodiment, the upper surface of the cymbal frame 4 is covered by the cover member 6 and the upper surface of the cover member 6 is covered by the film member 7, but the present invention is not limited thereto. For example, the upper surface of the cymbal frame 4 may be covered by a rubber cover.

[0104] In the above embodiment, a detailed description of the method of mounting the membrane member 7 on the cover member 6 is omitted, but the structure may be that only the membrane member 7 is placed on the cover member 6 (in a state where relative displacement is possible), or the membrane member 7 is fixed (bonded) to the cover member 6. In addition, the structure may be that the cover member 6 and the membrane member 7 are omitted.

[0105] In the above embodiment, the film member 7 is described as a plain woven fabric (net) formed by using synthetic fibers, but it is not necessarily limited to this. For example, a non-woven fabric or a resin film using synthetic fibers can also be used to form the film member 7. That is, the film member 7 can be made of a material that has a higher strength against impact than the cover member 6 and a material that is easier to slide on the upper surface than the cover member 6 (lower friction coefficient).

[0106] In the above embodiment, the sheet sensor 9 is described as a membrane switch, but it is not necessarily limited to this. For example, if it is a sensor that can detect the pressure when each frame is pinched, a known sensor such as a conductive rubber sensor or a cable sensor, an electrostatic capacitance touch sensor, etc. can be applied. In addition, it can also be a structure that detects the change of the relative spacing of each frame by a non-contact sensor (for example, a sensor or an optical sensor that detects the change of the magnetic field or electrostatic capacitance) instead of detecting the pinching of each frame by pressure.

[0107] In addition, the following structure may be adopted: instead of using the sheet sensor 9 to detect the pressure change, the pinching of each frame may be detected by turning the sensor on / off. In the above case, it is sufficient to determine that a muting technique is being performed (the generated musical sound is attenuated) when the sensor is turned on for a predetermined time. In this way, it is possible to prevent the sensor from being turned on during the strike from being erroneously determined as a muting technique.

[0108] In the above embodiment, the sheet sensor 9 is described as being disposed between the cymbal frame 5 and the buffer material 8, but the present invention is not necessarily limited thereto. For example, the sheet sensor 9 may be disposed between the cymbal frame 4 and the buffer material 8, or may be mounted on the lower surface of the cymbal frame 5. In addition, the sheet sensor 9 may be omitted.

Claims

1. An electronic percussion instrument, characterized in that: include: A first frame, the upper surface of which serves as a striking surface; a first sensor, mounted on the first frame, for detecting vibration when the first frame is struck; a second frame disposed below the first frame in a state of not contacting the first frame, and having an outer edge located further outward than an outer edge of the first frame to form a cymbal edge; as well as The second sensor is installed on the second frame and detects vibration when the second frame is hit.

2. The electronic percussion instrument according to claim 1, characterized in that: comprising an elastic body supported by a rod, The first frame and the second frame are supported by the rod via the elastic body.

3. The electronic percussion instrument according to claim 2, characterized in that: A buffer material is provided between a lower surface of the outer edge side of the first frame and an upper surface of the second frame and has a predetermined elasticity. When the first frame or the second frame is struck, the contact between the first frame and the second frame is restricted by the buffer material.

4. The electronic percussion instrument according to claim 3, characterized in that: The buffer material is formed continuously in the circumferential direction around the rod. The space between the first frame and the second frame is blocked by the buffer material.

5. The electronic percussion instrument according to claim 3 or 4, characterized in that: comprising a third sensor disposed between the buffer material and the first frame or the second frame, When the third sensor detects that the first frame and the second frame are pinched, the generated musical sound is attenuated.

6. The electronic percussion instrument according to claim 5, characterized in that: When the third sensor detects that the first frame and the second frame are pinched for a period of time longer than a predetermined period, the generated musical sound is attenuated.

7. The electronic percussion instrument according to any one of claims 1 to 4, characterized in that: The first frame is configured as an electronic cymbal having a cymbal cup portion and a cymbal face portion. The second sensor is arranged at a position overlapping the cymbal cup portion when viewed in the up-down direction.

8. The electronic percussion instrument according to any one of claims 1 to 4, characterized in that: The upper surface and the outer peripheral surface of the cymbal edge portion of the second frame are not covered with an elastic body.

9. The electronic percussion instrument according to any one of claims 1 to 4, characterized in that: include: a cover member made of a foamed resin, covering the upper surface of the first frame; as well as a membrane member covering the upper surface of the cover member and having a strength higher than that of the cover member, The film member is a woven or nonwoven fabric formed using synthetic fibers, or a resin film.

10. The electronic percussion instrument according to claim 9, characterized in that: The first frame includes a plurality of slits extending vertically.

11. The electronic percussion instrument according to claim 10, characterized in that: The first frame is configured as an electronic cymbal having a cymbal cup portion and a cymbal face portion. The first sensor is mounted on the cymbal cap portion. The slit is formed in a radial shape centered on the first sensor side.

12. A method for detecting a blow, for detecting a blow in an electronic percussion instrument, the electronic percussion instrument comprising: A first frame, the upper surface of which is formed as a striking surface; a first sensor, which is mounted on the first frame and detects vibration when the first frame is struck; a second frame, which is arranged on the lower side of the first frame in a state of not contacting the first frame, and forms a cymbal edge by making the outer edge located closer to the outer peripheral side than the outer edge of the first frame; and a second sensor, which is mounted on the second frame and detects vibration when the second frame is struck, and the striking detection method is characterized in that, Based on the ratio or difference between the output values ​​of the first sensor and the second sensor, it is determined which frame, the first frame or the second frame, has been struck.

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