CN215265547U

CN215265547U - Electronic percussion melody musical instrument

Info

Publication number: CN215265547U
Application number: CN202121279236.5U
Authority: CN
Inventors: 黄志坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-01
Filing date: 2021-06-08
Publication date: 2021-12-21
Anticipated expiration: 2031-06-08
Also published as: CN113284476A; WO2022253218A1

Abstract

The utility model discloses an electronic percussion melody musical instrument, which comprises a musical instrument body and a processing device, wherein the musical instrument body is configured to receive external percussion, generate effective percussion signals and to-be-detected percussion signals according to the percussion and send the effective percussion signals and the to-be-detected percussion signals to the processing device; the processing device comprises at least a processor and is configured for receiving a valid strike signal; acquiring a striking signal to be detected in parallel with receiving the effective striking signal or within a preset time period after receiving the effective striking signal; and comparing the signal intensity of the striking signal to be detected with an effective intensity threshold value or a threshold value range, and determining whether the striking signal to be detected is an effective striking signal according to a comparison result. The utility model discloses a scheme can distinguish effective and invalid strike through judging the mode that strikes the signal for effective striking signal to can guarantee that electron strike melody musical instrument only sends the musical instrument sound receiving effective striking, and then guarantee to play the effect.

Description

Electronic percussion melody musical instrument

Technical Field

The present invention relates generally to the field of musical instruments. More particularly, the present invention relates to an electronic percussion melody musical instrument.

Background

The electronic percussion melody musical instruments generally control the tone control circuit switch to be turned on when a percussion from the outside is sensed, and generate an electric signal associated with a tone after the tone control circuit switch is turned on, thereby sounding the tone.

At present, in the process of playing an electronic percussion melody musical instrument, a tone signal is generated (namely, a tone is generated) as long as the percussion is sensed, so that the electronic percussion melody musical instrument can generate a tone signal by mistake when receiving invalid percussion (for example, the percussion caused by mistaken percussion on a key or residual vibration generated when other keys are struck), and the playing effect is influenced.

SUMMERY OF THE UTILITY MODEL

At least to the above-mentioned drawbacks of the background art, the present invention provides an electronic percussion melody musical instrument.

In a first aspect, the present invention provides an electronic percussion melody musical instrument, comprising a musical instrument body and a processing device, wherein the musical instrument body is configured to receive a percussion from the outside, generate a valid percussion signal and a percussion signal to be detected according to the percussion; sending the effective striking signal and the to-be-detected striking signal to the processing equipment; the processing device comprises at least a processor and is configured to: receiving the valid strike signal; acquiring the striking signal to be detected in parallel with the reception of the effective striking signal or within a preset time period after the effective striking signal is received; comparing the signal intensity of the striking signal to be detected with an effective intensity threshold value or a threshold value range; and determining whether the striking signal to be detected is a valid striking signal according to the comparison result.

In one embodiment, the processor is further configured to determine that the striking signal to be detected is a valid striking signal in response to the comparison result being that the signal strength of the striking signal to be detected satisfies the valid strength threshold or threshold range.

In one embodiment, the processor is further configured to determine that the striking signal to be detected is an invalid striking signal in response to the comparison result being that the signal strength of the striking signal to be detected does not satisfy the effective strength threshold or threshold range.

In one embodiment, the processor is further configured to acquire the percussion signals to be detected from the electronic percussion melody instrument in a polling and/or interrupting manner.

In one embodiment, wherein the instrument body includes a plurality of key modules and a body, wherein each of the key modules includes: one or more keys configured to receive a strike from the outside; one or more sensing units, wherein each sensing unit is used for sensing the striking and generating the effective striking signal and the to-be-detected striking signal based on the striking; and the body is connected with the plurality of key modules, and includes: a cavity, the cavity contains: a sounding module configured to output a musical tone signal corresponding to the valid striking signal; wherein the processor is further configured to: and when the striking signal to be detected is determined to be an effective striking signal, controlling the sounding module to output the piano tone signal corresponding to the striking signal to be detected.

In one embodiment, wherein the sound emitting module comprises: a storage unit configured to store sound source data associated with the one or more keys; and an output unit configured to output a musical instrument sound signal corresponding to the sound source data; wherein the processor is further configured to: when the striking signal to be detected is determined to be an effective striking signal, sound source data associated with the striking signal to be detected is acquired from the storage unit according to the striking signal to be detected; and controlling the output unit to output the musical instrument sound signal corresponding to the sound source data.

In one embodiment, wherein the sensing unit comprises one or more of a piezo ceramic sensor, a pressure sensing sensor, a flexible bending sensor, a vibration sensor, a mems acceleration sensor, a mems gyroscope, a mems pressure sensor, and a mems vibration sensor.

In one embodiment, the plurality of key modules includes a main key module connected to another one or more key modules through the key interface, and the main key module is connected to the body in one of the following manners: the piano body is fixedly connected with the main key module in an integrated manner; or the body includes at least one body interface cooperating with the key interfaces to connect the body with the master key module.

In one embodiment, the body includes one or more body interfaces cooperating with the key interfaces to connect the body with the key modules, the plurality of key modules being connected with the body in one of the following ways: the body connects the body with each of the plurality of key modules through the plurality of body interfaces; or the plurality of key modules comprise a main key module which is fixedly connected with the body in an integrated manner, and the rest plurality of key modules are matched with the corresponding plurality of body interfaces through respective key interfaces so as to be connected with the body.

In one embodiment, the key interface and body interface include one or more of the following types of interfaces: a short-range wireless communication interface; a wired communication interface and a mechanical connection interface.

Based on the above description about the scheme of the present invention, those skilled in the art can understand that the scheme described in the above embodiments can determine whether the percussion signal is a valid percussion signal, and distinguish valid percussion from invalid percussion, so as to ensure that the electronic percussion melody musical instrument only sends out the musical instrument tone after receiving valid percussion, and further ensure the playing effect.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are illustrated by way of example and not by way of limitation, and like reference numerals designate like or corresponding parts throughout the several views:

fig. 1 is an exemplary structural view of an electronic percussion melody musical instrument according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart of a method for an electronic percussive melody musical instrument according to an embodiment of the present invention;

fig. 3 is a block diagram showing an exemplary configuration of a processing apparatus for an electronic percussion melody musical instrument according to an embodiment of the present invention;

fig. 4 is a block diagram illustrating an exemplary structure of an electronic percussion melody musical instrument according to an embodiment of the present invention;

FIG. 5 is a view showing an exemplary structure of an electronic percussion melody musical instrument according to an embodiment of the present invention;

fig. 6 is a view showing an exemplary structure of a key module of an electronic percussion melody musical instrument according to an embodiment of the present invention;

fig. 7 is a schematic view showing the arrangement of keys of an electronic percussion melody musical instrument according to an embodiment of the present invention;

fig. 8 is a schematic view showing the key module of the electronic percussion melody musical instrument according to the embodiment of the present invention;

fig. 9 is a view showing various connection modes of a key module of the electronic percussion melody musical instrument according to the embodiment of the present invention;

fig. 10 is a view showing a spliced structure of key modules of the electronic percussion melody musical instrument according to the embodiment of the present invention;

fig. 11 is a block diagram showing the composition of an electronic percussion melody musical instrument according to an embodiment of the present invention;

fig. 12 is a diagram showing an internal structure of an IC sound source memory according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

The effective percussion, effective percussion signal, ineffective percussion, and ineffective percussion signal of the electronic percussion melody musical instrument that may be used in the aspect of the present invention are explained first. In the present invention, the striking intensity of the user on the key (for example, 30 n) can be set to be effective striking, and the sensing unit of the electronic percussion melody musical instrument generates a striking signal based on the effective striking signal. Further, the electronic percussion melody musical instrument may output a tone signal corresponding to the effective percussion (i.e., sounding a tone) to realize the performance of the electronic percussion melody musical instrument.

Corresponding to the above-described effective striking, a striking having a striking intensity smaller than the striking intensity threshold value is an ineffective striking. For example, a percussion made by a user mistakenly striking a key or a percussion made by conducting residual vibration of a large percussion applied to a certain key of the electronic percussion melody instrument to the sensing unit is an ineffective percussion. The percussion signal generated by the electronic percussion melody musical instrument based on the ineffective percussion is an ineffective percussion signal.

The effective striking, the effective striking signal, the ineffective striking, and the ineffective striking signal described above will be further described with reference to the electronic percussion melody musical instrument shown in fig. 1.

As can be seen from fig. 1, the electronic percussion melody musical instrument includes three keys, key a, key B and key C, which are sequentially arranged on a plate. Between the three keys and the piano plate, there are provided a sensing unit and vibration absorbing elements, respectively, a sensing unit a1 provided corresponding to the key a, a sensing unit B1 provided corresponding to the key B, and a sensing unit C1 provided corresponding to the key C, respectively, and vibration absorbing elements, respectively, a vibration absorbing element a2 provided corresponding to the key a, a vibration absorbing element B2 provided corresponding to the key B, and a vibration absorbing element C2 provided corresponding to the key C. The sensing unit is used for sensing the striking of a user on the key, generating a striking signal according to the striking and transmitting the vibration generated by the striking to the corresponding vibration absorbing element. The vibration absorbing elements are used for absorbing the vibration conducted by the sensing unit and conducting the residual vibration which cannot be absorbed to other vibration absorbing elements through the instrument board. After absorbing part of the residual vibration again, the vibration absorbing element continuously conducts the residual vibration to the corresponding sensing unit, and the sensing unit generates a striking signal according to the residual vibration.

For example, if the user strikes the key B with a striking force F (for example, 30 newtons, 60 newtons, or 100 newtons) greater than or equal to a striking intensity threshold value (set to 30 newtons), the striking is an effective striking, and a striking signal generated by the sensing unit B1 based on the striking is an effective striking signal. If the user mistakenly strikes the key B with a striking force F (for example, 10 newtons, 15 newtons, or 22 newtons) smaller than the striking intensity threshold value, the striking is an invalid striking, and the striking signal generated by the sensing unit B1 based on the invalid striking is an invalid striking signal.

If the striking strength of the striking force F is relatively large, for example, 100 newtons, the vibration absorbing element B2 transmits residual vibrations to the vibration absorbing elements a2 and C2 on both sides of the key B through the plate after absorbing a part of the vibrations. After absorbing part of the residual vibration again, the vibration absorbing element a2 and the vibration absorbing element C2 transmit the residual vibration to the sensing unit a1 and the sensing unit C1. At this time, the strikes sensed by the sensing unit a1 and the sensing unit C1 are ineffective strikes, and the striking signals generated by the electronic percussion melody musical instrument based on the ineffective strikes are ineffective striking signals.

As described in the background, the conventional electronic percussion melody instruments generate a musical note when detecting the ineffective percussion signals, thereby affecting the performance of the electronic percussion melody instruments. In view of the above, embodiments of the present invention provide a method for an electronic percussion melody musical instrument. The method can judge whether the detected percussion signals are effective or not, so that the electronic percussion melody musical instrument can give out musical instrument tones only when the percussion signals are effective percussion signals (namely, a player actually performs percussion on the musical instrument), thereby ensuring the playing effect.

Fig. 2 is a schematic flow chart of a method 200 for an electronic percussion melody musical instrument according to an embodiment of the present invention. The method flow shown in fig. 2 will be described in detail below in conjunction with the above description of the valid percussion, valid percussion signal, invalid percussion, and invalid percussion signal for the electronic percussion melody musical instrument.

As shown in fig. 2, the method 200 includes receiving effective percussion signals from the electronic percussion melody instrument at step S201. In one implementation scenario, the effective percussion signal may be received and the subsequent correlation operations may be performed by a processing device, which may be a control unit inside the electronic percussion melody musical instrument or an external device connected to the electronic percussion melody musical instrument, and which may be implemented by using an electronic device such as a digital signal processor ("DSP"). As can be seen from the foregoing description, the effective percussion signal may be generated by a sensing unit disposed at the electronic percussion melody instrument for sensing the percussion motion of the user. In one implementation scenario, the processing device may determine whether the striking signal is a valid striking signal by determining whether the signal strength thereof satisfies a valid strength threshold or threshold range after receiving the striking signal (a validity determination method of the striking signal is described in detail later).

After receiving the effective striking signal, the flow advances to step S202. In step S202, a striking signal to be detected is acquired in parallel with the reception of the effective striking signal or within a preset time period after the reception of the effective striking signal. The percussion signal to be detected here may also be generated by a sensing unit arranged at the electronic percussion melody instrument for sensing the percussion motion of the user.

It will be understood by those skilled in the art that the electronic percussion melody musical instrument needs to receive a plurality of effective strikes and generate effective striking signals in order to perform a performance. Based on this, the generation cycle of the effective striking signal can be counted, and the time length of the preset time period can be further set based on this. For example, the preset time period may be set to a time length less than or equal to the generation cycle of the effective striking signal, so as to detect an ineffective striking signal or the like generated based on the aftervibration of the effective striking signal.

Alternatively or additionally, the processing device may acquire the percussion signals to be detected from the electronic percussion melody instruments in a polling and/or interrupted manner within the preset time period. In order to acquire the striking signals to be detected generated by all the sensing units of the electronic percussion melody instrument within the preset time period so as to realize comprehensive detection, the polling period can be set to be a time unit which is less than or equal to the preset time period/the total number of the sensing units. It is understood that the smaller the period setting of polling, the more comprehensive the detected percussion signals are, so that the exclusion of ineffective percussion signals can be made more sufficient, and the performance of the electronic percussion melody musical instrument can be made better.

Compared with the polling method, the method for acquiring the striking signal to be detected in the interrupt mode can simplify the processing procedure of the processing equipment, thereby improving the information processing speed. In addition, the passive receiving mode can also prevent the hitting signals from being missed to be detected, so that the detection comprehensiveness is ensured.

It can be understood that, only can detect the detection that detects after aforementioned effective striking signal produces in above-mentioned preset time quantum and wait to detect striking signal, the utility model discloses a scheme can be through with receive the parallel operation that constantly acquires to detect the striking signal of detecting and acquire the detection that waits to detect striking signal at different moments to realize comprehensive signal detection.

After the striking signal to be detected is acquired, the flow proceeds to step S203 to compare the signal intensity of the striking signal to be detected with the effective intensity threshold value or threshold value range.

In one implementation scenario, the effective intensity threshold or threshold range may be specifically set according to the sensitivity of the electronic percussion melody instrument to effective percussion signal identification. For example, when the electronic percussion melody musical instrument is less sensitive to the recognition of the effective striking signals, the lower limit value of the effective intensity threshold or threshold range may be set to be larger in order to recognize the effective striking signals corresponding to the effective strikes of larger intensity (the greater the intensity of the set strikes, the greater the signal intensity of the corresponding striking signals). In contrast, when the electronic percussion melody musical instrument has a high sensitivity of recognition of valid percussion signals, the lower limit value of the valid intensity threshold value or threshold range can be set small, so that more valid percussion signals can be recognized.

In another implementation scenario, the effective intensity threshold or threshold range may also be specifically set according to the material of one or more elements (such as keys, sensing units and/or shock absorbing elements) in the electronic percussive melodic instrument. Taking the key as an example, when it is made of a material that is relatively sensitive to stress, the effective intensity threshold value or the lower limit value of the threshold value range may be set smaller. Conversely, when made of a material that is less sensitive to stress, the effective intensity threshold or the lower limit of the threshold range may be set to be larger.

After the comparison, the flow proceeds to step S204, and it is determined whether the striking signal to be detected is a valid striking signal according to the comparison result. In one specific implementation scenario, in response to the comparison result that the signal intensity of the striking signal to be detected satisfies the effective intensity threshold or the threshold range, the striking signal to be detected is determined to be an effective striking signal. Further, it may be set that the effective intensity threshold is satisfied when the signal intensity of the striking signal to be detected is greater than or equal to the effective intensity threshold, and the threshold range is satisfied when the signal intensity of the striking signal to be detected is within the threshold range. With this arrangement, an effective striking with a large striking intensity can be recognized.

Correspondingly, in response to the comparison result that the signal intensity of the striking signal to be detected does not meet the effective intensity threshold or the threshold range, determining that the striking signal to be detected is an invalid striking signal. Further, it may be set that the effective intensity threshold is not satisfied when the signal intensity of the striking signal to be detected is smaller than the effective intensity threshold, and the threshold range is not satisfied when the signal intensity of the striking signal to be detected is smaller than the lower limit value of the threshold range, so that the invalid striking with a smaller striking intensity may be recognized.

It is from top to bottom visible, through the utility model discloses a scheme can be through judging whether the mode of striking the signal for effective striking signal distinguishes effective and invalid striking to can guarantee that electron percussion melody musical instrument only sends the musical instrument sound receiving effective striking, and then guaranteed the performance effect.

Fig. 3 is a block diagram showing an exemplary configuration of a processing apparatus 300 for an electronic percussion melody musical instrument according to an embodiment of the present invention. As shown in fig. 3, the processing device 300 may include a processor 301 and a memory 302, wherein the processor 301 and the memory 302 communicate via a bus 303. The memory 302 stores program instructions executable by the processor 301 which, when executed by the processor 301, cause the processing device 300 to perform the method steps described above in connection with the figures. Through the utility model discloses a processing apparatus 300 can distinguish the effective and invalid strike of electron percussion melody musical instrument to make only just send the musical instrument sound under the condition of effectively striking, and then guaranteed the performance effect.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the above method embodiments may be performed by hardware associated with program instructions, and the aforementioned program may be stored in a non-transitory computer readable medium, and when executed, performs the steps including the above method embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.

Fig. 4 is a block diagram illustrating an exemplary structure of an electronic percussion melody musical instrument 400 according to an embodiment of the present invention.

As shown in fig. 4, the electronic percussion melody instrument 400 may include an instrument body 401 and a processing device 402 as described in connection with the foregoing embodiments. The instrument body 0401 is configured to receive a percussion from the outside, and generate a valid percussion signal and a percussion signal to be detected from the percussion and transmit them to the processing apparatus 402. Those skilled in the art will appreciate that the structure of the instrument body 401 may be various, and may include, for example, a plurality of key modules 510 and a body 520 shown in fig. 5. The electronic percussion melody musical instrument 500 will be described in detail with reference to fig. 5.

A specific implementation in which each key module 510 includes only one key 501 and one sensing unit 502 is exemplarily shown in fig. 5, but it will be understood by those skilled in the art that each key module 510 may further include a plurality of keys 501, a plurality of sensing units 502, and at least one key interface 503 according to different application scenarios. Further, each of the keys 501 is configured to receive a strike from the outside. Each sensing unit 502 is configured to sense the strike and generate the valid strike signal and the to-be-detected strike signal based on the strike. The at least one key interface 503 is used to connect with another key module or modules 510.

The body 520 may be connected to a plurality of key modules 510, and the body 520 may include a cavity 5210, and the cavity 5210 may accommodate therein a sound module 5211 and the processing device 5212. In this case, the processing device 5212 may be realized by an existing control unit inside the electronic percussion melody musical instrument. As can be seen from the foregoing description (the processing device may also be an external device connected to the electronic percussion melody musical instrument), the processing device may also be an external device connected to the musical instrument body, and will not be described in detail here.

The above-described sound emitting module 5211 may be configured to output a tone signal corresponding to an effective striking signal. Based on this, the processing device 5212 may also be configured to control the sounding module 5211 to output a musical instrument sound signal corresponding to the striking signal to be detected when it is determined that the striking signal to be detected is a valid striking signal, so as to sound a corresponding musical instrument sound. Alternatively or additionally, the body 520 may be made of metal or composite material.

In one implementation scenario, the sound module 5211 may include a storage unit and an output unit, and the storage unit may be configured to store sound source data associated with one or more keys 501. In one application scenario, the sound source data may comprise data relating to the timbre and/or sound effect of at least one musical organ, for example. Further, the at least one musical instrument may include, but is not limited to, one or more musical instruments of xylophone, tremolo and marimba, and the electronic percussion melody musical instrument may exhibit the same or similar performance effect as existing various percussion melody musical instruments according to the difference in sound source data and the difference in the number of key modules used.

In this case, the output unit may be configured to output a sound signal corresponding to the sound source data. In one application scenario, the output unit may be a speaker including a power amplifier, so that the sound signal is amplified and played in the form of sound. The processing device 5212 may also be configured to, when it is determined that the striking signal to be detected is a valid striking signal, acquire, from the storage unit, sound source data associated with the striking signal to be detected according to the striking signal to be detected, and control the output unit to output a tone signal corresponding to the sound source data, thereby emitting a corresponding tone.

Fig. 6 is a view showing an exemplary structure of a key module 600 of an electronic percussion melody musical instrument according to an embodiment of the present invention. As shown in fig. 6, the key module 600 includes a plurality of keys 601, a conductive structure composed of a stress panel 602 and a pressure-bearing bottom plate 603 adjacent to the keys 601, a plurality of sensing units 604, a key base 605, a key interface 606, a support 607, and vibration absorbing elements 608. As can be seen from this figure, the conducting structure may be arranged below the plurality of keys 601, it may be made of metal or composite material, and it may be configured to conduct (conduct in the form of vibrations) the pressure generated by striking the keys. In this case, a plurality of sensing units 604 may be disposed between the stress panel 602 and the pressure-bearing base plate 603. In one embodiment, the stress panel 602 may have the above-mentioned supporting member 607 (or supporting portion) for supporting the above-mentioned plurality of keys disposed thereon, and the shock absorbing member 608 may be filled between the stress panel 602 and the pressure-bearing bottom plate 603.

In one embodiment, the above-described support 607 may be, for example, a member including a lever or a spring configured to support and restrain the key 601 and to restore the key 601 to a position before the key 601 is struck every time the key 601 is struck. In another embodiment, the shock absorbing element 608 may be constructed of one or more composite materials. For example, the vibration absorbing member 608 may be a high-density sponge for absorbing the vibration generated by striking the key 601 so that the key 601 stops vibrating quickly after being struck, so that the player does not feel so hard as to strike the key 601, thereby giving the player a feel closer to that of striking a conventional percussion instrument. In addition, the vibration absorbing element 608 can also transmit residual vibration that cannot be absorbed to other elements (e.g., other sensing units) through the pressure-bearing bottom plate 603 and the key base 605.

In one or more embodiments, the sensing unit 604 may include one or more of a piezo ceramic sensor, a pressure sensitive sensor, a flexible bending sensor, and a vibration sensor. The various sensors described above can be flexibly arranged according to different requirements for the sensitivity of key striking, for example, in one embodiment, the sensing unit 604 may include a plurality of piezoceramic sensors. Because piezoceramics sensor can produce the not electric current of equidimension according to the difference of the pressure that receives, consequently the utility model discloses an electron percussion melody musical instrument can also send the musical instrument sound of different volume sizes according to the difference of the dynamics that the player struck the key to make and have the audio when more being close to striking traditional musical instrument in the performance process. The utility model discloses an embodiment, can reflect the dynamics that the player struck the key through the signal strength who detects the strike signal to with this size of controlling the musical instrument sound.

Additionally, the utility model discloses a scheme can also increase the scope that the player struck the dynamics of key through the sensitivity that increases piezoceramics sensor. The sensitivity of the piezoceramic sensor here refers to the ratio of the output small current increment to the corresponding input small pressure increment. It is understood that the larger the ratio, the higher the sensitivity of the piezoelectric ceramic sensor, so that it is possible to satisfy the performance of players with different striking strengths.

In one embodiment, the key base 605 may be a solid structure made of metal or composite material configured to support and fix the conductive structure. The key interface 606 may be disposed on the key base 605, and configured to connect two key modules, and may be configured to cooperate with a body interface on a body to connect the key modules and the body.

The key interface 606 and body interface may be one or more of the following types of interfaces: the keyboard interface and the body interface may adopt different interface modes, for example, the keyboard interface may adopt a short-range wireless communication interface, and the body interface may adopt a wired communication interface or a mechanical connection interface. Further, the short-range wireless communication interface may be, for example, an interface for communicating using bluetooth or infrared technology, the wired communication interface may be, for example, an interface for communicating by a form of an electrical cable or an optical cable, and the mechanical connection interface may have various implementations, such as, but not limited to: the connector comprises a socket and a plug, a sliding connecting rod and a slot, and a lug boss and a slot.

The key module 600 shown in fig. 6 described above is merely exemplary and not limiting, and those skilled in the art can also make modifications thereto in accordance with the teachings of the present invention without departing from the spirit and substance of the present invention. For example, the stress panel 602 may be divided into a plurality of small blocks (shown in fig. 6 as dotted lines corresponding to each key 601), and the length of each stress panel is adapted to the width of the key and is disposed corresponding to one key, so as to effectively transmit the force applied to the key.

Fig. 7 is a schematic diagram showing the arrangement of keys 700 of the electronic percussion melody musical instrument according to the embodiment of the present invention. As shown in fig. 7, in one embodiment, the plurality of keys may be made of a composite material and may be arranged in two rows, wherein a first row may be provided as a semitone region, as shown in fig. 7, in an upper row consisting of note numbers # C, # D, # F, # G, and # a …; and the second row may be provided as a diatonic region as shown in fig. 7 as a lower row consisting of note numbers C, D, E, F, G, A and B ….

In one embodiment, the electronic percussion melody musical instrument of the present invention can realize one or more kinds of musical instruments according to the difference in the number of connected key modules. The one or more harps may be, for example, one or more of a xylophone, a tremolo and a marimba. Fig. 8 shows a schematic diagram of a splicing 800 of key modules of an electronic percussion melody musical instrument according to an embodiment of the present invention. As shown in the figure, several of the key modules one, two, three, four and five can be connected end to end in turn according to the variety of the piano required to be played, and the key module five is connected with the piano body, wherein the key modules one, two, three and four are all composed of 12 keys, and the key module five is composed of 13 keys.

Specifically, in one application scene, the three, four and five key modules can be spliced to form a 37-key tremolo and xylophone, and in another application scene, the two, three, four and five key modules can be spliced to form a 49-key marimba and xylophone. Those skilled in the art can also connect a plurality of the key modules according to the similar method as required to form a corresponding piano, and the details are not repeated herein.

Fig. 9 is a diagram showing various connection modes 900 of the key module of the electronic percussion melody musical instrument according to the embodiment of the present invention. As shown in fig. 9, the electronic percussion melody musical instrument of the present invention can be connected in 4 connection manners, wherein the first one of the plurality of key modules may include a main key module and key modules a to N. The main key module and the piano body are fixedly connected in an integrated mode, and the two main key interfaces on the main key module are respectively matched with the key interfaces F and G on the two adjacent key modules F and G, so that the main key module is respectively connected with the key modules F and G. The remaining key modules a to N are connected in series, for example, E and H in fig. 9 are connected to the key modules F and G, respectively, in the manner described above.

In one embodiment, the plurality of key modules in the second mode may include a main key module and key modules a to N. The body may include a body interface for cooperating with the key interfaces to connect the body and the key modules. The second method is different from the first method in that: the main key module is connected with the piano body in a way that the main key interface is matched with the piano body interface. The connection mode of the other key modules A-N is the same as the first mode.

In another embodiment, the body in the third mode may include a plurality of body interfaces a to N, and each of the plurality of key modules a to N may include a key interface, respectively. The plurality of key modules A-N are mutually matched with the key interfaces A-N through the key body interfaces A-N, and then are respectively connected with the body.

In still another embodiment, the body in mode four may include a plurality of body interfaces a to N, and the plurality of key modules may include a main key module and key modules a to N, where each of the key modules a to N may include a key interface. The main key module and the piano body are fixedly connected in an integrated mode. The plurality of key modules A-N are mutually matched with the key interfaces A-N through the key body interfaces A-N, and then are respectively connected with the body.

Fig. 10 is a diagram showing a splicing structure 1000 of a key module of an electronic percussion melody musical instrument according to an embodiment of the present invention. The split structure shown in fig. 10 employs a mechanical connection interface to connect the plurality of key modules. It will be appreciated that the above-described mechanical connection interface is also applicable to connecting the key module and the body. As shown in fig. 10, the mechanical connection interface includes a connection rod C and a plurality of slots D, wherein the connection rod C may be an elongated solid structure made of metal or composite material, and the slots D may be elongated hollow rails having a cross section identical to that of the connection rod C, so that the slots D are tightly combined with the connection rod C. The slot positions D are respectively arranged on the key modules A and B to be connected (or respectively arranged on the key modules and the piano body to be connected), and the connecting rod C is telescopically accommodated in the slot positions D of the key modules A or B.

When it is necessary to connect the two key modules a and B (or the key module and the body), the connecting rod C located in one of the slot positions D (for example, the slot position D of the key module a) is slidably extended from the slot position D along the track of the slot position D and is slidably inserted into the slot position D of the other key module B, so that the two key modules a and B to be connected are connected (or the key module to be connected and the body are connected). When it is necessary to detach the two key modules a and B (or the key modules and the body), the linking lever C is slid in the direction opposite to the above.

Fig. 11 is a block diagram showing the composition of an electronic percussion melody musical instrument 1100 according to an embodiment of the present invention. It is understood that the electronic percussive melody musical instrument 1100 shown in fig. 11 is an electronic percussive melody musical instrument constituted by splicing a plurality of key modules and a body. The electronic percussion melody musical instrument 1100 shown in fig. 11 is an exemplary embodiment of the electronic percussion melody musical instrument 500 shown in fig. 5, and includes more implementation details. Therefore, the above description of the electronic percussion melody instrument 500 is also applicable to the scheme of the electronic percussion melody instrument 1100, and the same contents will not be described again.

As shown in fig. 11, the electronic percussion melody musical instrument 1100 of the present invention may include keys 1101, a sensing unit 1102, an a/D conversion module 1103, a filter module 1104, a control unit 1105 (used as a processing device), an IC sound source memory 1106, a data memory 1107, a power amplifier 1108, a speaker 1109, a bluetooth module 1110, an optical fiber module 1111, and a MIDI interface 1112. In one embodiment, the a/D conversion module 1103 includes an a/D conversion chip and its auxiliary circuits, which are configured to convert the analog electrical signal output by the sensing unit into a digital electrical signal and input the digital electrical signal to the control unit. Specifically, the a/D conversion functions to convert an analog signal continuous in time and amplitude into a digital signal discrete in time and amplitude. Typically, a/D conversion requires 4 processes of sampling, holding, quantizing, and encoding. In practical circuits, some of the foregoing processes may be combined, for example, quantization and coding are often implemented simultaneously in the conversion process.

In one embodiment, the filtering module 1104 may include a filter and its accompanying circuitry configured to filter the digital electrical signal and send the filtered digital electrical signal to the control unit 1105. During the playing of the electronic percussion melody musical instrument, due to the electrical characteristics of the electronic components, low or high frequency interference signals may be generated in the circuit, which may affect the reception of useful signals (such as the effective percussion signal and the percussion signal to be detected described above) associated with the percussion keys. Therefore, the digital electrical signal output by the a/D conversion module 1103 can be processed by a filter, for example, composed of a resistor and a capacitor, so as to filter out the interference signal therein, and ensure the normal reception of the useful signal.

In one embodiment, the memory of the present invention may include an IC audio source memory 1106 and a data memory 1107. Wherein the IC sound source memory 1106 is configured to store sound source data associated with the plurality of keys, including but not limited to data relating to timbre and/or sound effect of one or more of the xylophone, tremolo and marimbap. The internal structure of the IC sound source memory will be briefly described with reference to fig. 12.

Fig. 12 is an internal configuration diagram showing an IC sound source memory 1200 according to an embodiment of the present invention. As shown in fig. 12, the IC sound source memory 1200 stores waveform data of sound source data [0] to sound source data [ n ], where the sound source data [0] is waveform data of the lowest note and the sound source data [ n ] is waveform data of the highest note, and the value of n depends on the number of keys. When sound source data is stored in the same number of wavelengths, since the wavelength of bass is longer, the data of sound source data corresponding to a lower note number is longer than the data of sound source data corresponding to a higher note number, and therefore the storage space occupied by the data of sound source data in the IC sound source memory is larger. In one embodiment, the sound source data may correspond one-to-one to the keys shown in fig. 7, for example, the sound source data [0] may correspond to the note number C of the key shown in fig. 7, the sound source data [1] may correspond to the note number D of the key shown in fig. 7, for example, and the like.

In one embodiment, the data storage 1107 is configured to store programs and data related to controlling the operation of the musical instrument-related modules and units, and may also store other music data related to performance. The data storage device 1107 is connected to the control unit 1105 via a bus, which may include multiple sets of memory cells, each set of memory cells connected to the control unit 1105 via a bus.

In one embodiment, the control unit 1105 of the present invention may be implemented, for example, using a digital signal processor ("DSP"). The DSP is a microprocessor suitable for performing digital signal processing operations, and is mainly applied to rapidly implement various digital signal processing algorithms in real time. To the utility model discloses an adopt DSP as the control unit, can handle audio signal fast in real time. Specifically, firstly, the DSP receives the digital electrical signal output from the sensing unit 1102 and subjected to a/D conversion and filtering; then, the DSP acquires the audio data associated with the digital electrical signal from the IC audio source memory 1106 according to the digital electrical signal; finally, the DSP sends the sound source data to an output unit so as to output the organ sound signals corresponding to the sound source data.

In one embodiment, the power amplifier 1108 may be comprised of three parts: the power amplifier comprises a preamplifier circuit, a drive amplifier circuit and a final-stage power amplifier circuit. The pre-amplifier circuit is configured for impedance matching, which has advantages of high input impedance and low output impedance, and thus can receive and transmit the current signal of the audio source data with a minimum data loss. The drive amplifying circuit is configured to further amplify the current signal sent by the pre-amplifying circuit into a signal with medium power so as to drive the final-stage power amplifying circuit to normally work. The final power amplifying circuit plays a key role in the power amplifier, the technical index of the final power amplifying circuit determines the technical index of the whole power amplifier, and the final power amplifying circuit is configured to amplify a current signal sent by the driving amplifying circuit into a high-power signal so as to drive the loudspeaker 1109 to play sound.

In one embodiment, the speaker 1109 may include a magnet, a frame, a centering pad, a cone, a diaphragm, and the like. Alternatively, the speaker 1109 may also include the power amplifier described above. Specifically, the audio power signal causes the cone or diaphragm of the speaker to vibrate and resonate (resonate) with the surrounding air to generate sound through electromagnetic, piezoelectric, or electrostatic effects. Optionally, the speaker 1109 can be arranged outside the electronic percussion melody musical instrument, which can be connected wirelessly through wireless communication technology such as bluetooth.

The operation of the electronic percussion melody musical instrument of the present invention will be described in detail with reference to fig. 6 to 9.

When the player needs to utilize the utility model discloses an electron percussion melody musical instrument when playing, can be according to the musical instrument that will use a plurality of key modules according to the mode connect in the preamble. For example, the key modules one, two, three, four, and five shown in fig. 8 may be respectively connected end to end, and the key module five may be connected to the body so as to constitute a 61-key marimba. Specifically, the connecting rod in the slot on the first key module can be extended in a sliding manner and inserted into the slot on the second key module in a sliding manner, so that the first key module and the second key module are fixedly connected, and other key modules and the body are also fixedly connected in the manner. After the hardware connection is completed, the player can set the electronic percussion melody musical instrument as marimba on the control panel provided outside the electronic percussion melody musical instrument.

The performance starts, and the player strikes the key with a hammer, for example, the key represented by note number C. The pressure generated by the striking is transmitted (transmitted in the form of vibration) to the piezoelectric ceramic sensor through the transmission mechanism, and the piezoelectric ceramic sensor generates a striking signal corresponding to the note number C based on the pressure. At the same time, the key of note number C being struck rapidly stops vibrating under the combined action of the vibration absorbing element and the support within the conductive structure, and is rapidly bounced back to the state before being struck so as to wait for the next striking.

Then, the analog electric signal sent by the piezoelectric ceramic sensor is received by the A/D conversion module, and after a series of processing such as sampling, quantization and coding, the analog electric signal is converted into a digital electric signal and is transmitted to the filtering module for processing, so that high-frequency and low-frequency interference signals in the analog electric signal are effectively filtered. Then, the digital electric signal related to the key with the note number C after being processed by the filtering module is transmitted to the control unit, and when the control unit judges that the striking signal is a valid striking signal through the digital signal, the control unit performs table lookup in an IC sound source memory so as to acquire sound source data [0] related to the key with the sound source number C, and outputs the sound source data [0] to the power amplifier.

Then, the power amplifier processes the received sound source data [0] signal through the amplifying circuits of the previous stages in sequence respectively to amplify the signal of the sound source data [0 ]. The amplified signal of the sound source data [0] can be transmitted to a speaker in a wired or wireless manner for playing, so that the listener can listen to the sound emitted from the key striking the sound source number C.

The electronic percussion melody musical instruments are described above with reference to the drawings and the respective embodiments. It is understood by those skilled in the art that the foregoing description is by way of example only and not limitation, and that various changes in the electronic percussion melody instrument described above may be made by those skilled in the art in light of the teachings of the present invention without departing from the spirit and nature of the invention. For example, the sensing unit may be a micro-electromechanical system module that converts a physical response generated by an impact into an electrical signal, in addition to an energy conversion unit that converts mechanical energy generated by the impact into electrical energy in the form of an electrical signal, such as the piezoelectric ceramic sensor, the pressure-sensitive sensor, the flexible bending sensor, or the vibration sensor.

It will be understood by those skilled in the art that a Micro electro mechanical System (abbreviated as "MEMS") may include a Micro sensor and a Micro actuator. It refers to a micro-electromechanical system that can integrate micro-sensors, actuators, signal processing and control circuits, interface circuits, communication and power. The microsensor can be a novel sensor manufactured by microelectronic and micromachining technology. Compared with the traditional sensor, the sensor has the characteristics of small volume, light weight, low cost, low power consumption, quick response, high sensitivity, easiness in integration, realization of intellectualization and the like. The micro-sensor can measure various physical, chemical and biomass quantities such as displacement, velocity, acceleration, pressure, stress, sound, light, electricity, magnetism, heat, etc. At the same time, feature sizes on the order of microns allow it to perform functions that some conventional mechanical sensors cannot.

The above-described microactuators may be used to provide a variety of motions and controls, which are key components in MEMS. In one embodiment, the micro-actuator may be, for example, a micro-motor, micro-tweezers, micro-pump, micro-valve, micro-optics, printer head, hard disk head, and the like. Further, the micro sensor, the micro actuator and the related signal processing and control circuit may be integrated on one chip to constitute the mems module.

In one embodiment, when a key is struck or depressed, the key transmits the pressure it receives to a micro-actuator of a micro-electro-mechanical system, causing the micro-actuator to produce a micro-motion. The micro sensor senses the micro action and can output an electric signal with a certain rule or information in other required forms according to the size of the micro action, and the electric signal or the information is a striking signal.

In one embodiment, the mems module may include one or more of a mems acceleration sensor, a mems gyroscope, a mems pressure sensor, and a mems vibration sensor. Among these, mems gyroscopes operate primarily by using vibration to induce and detect coriolis forces (tangential forces to which a rotating object is subjected when there is radial motion). The heart of a MEMS gyroscope is a micromachined mechanical unit that resonates in motion according to a tuning fork mechanism and converts angular rate to displacement of a particular sensing structure by the coriolis force principle. The magnitude of the displacement is proportional to the magnitude of the angular rate applied.

Since the moving electrode (rotor) of the sensing part of the sensor is located at the side of the fixed electrode (stator), the displacement will cause a change in capacitance between the stator and the rotor. The angular rate applied at the input of the gyroscope is then converted into an electrical parameter-capacitance-that can be detected by a dedicated circuit. Further, the electric capacity is detected to generate an electric signal corresponding to the electric capacity, and then a striking signal is generated.

In another embodiment, the MEMS pressure sensor may be a MEMS silicon piezoresistive pressure sensor. The MEMS high-precision measuring bridge comprises a circular stress cup silicon film inner wall with fixed periphery, and four high-precision semiconductor resistance strain gauges are directly engraved at the position with maximum stress on the surface of the silicon film inner wall by utilizing the MEMS technology, so that the Wheatstone measuring bridge is formed. When the external pressure enters the stress cup through the pressure-leading cavity, the stress silicon film slightly bulges upwards under the action of external force, so that elastic deformation is generated. This will result in a change in the resistance of the four resistive strain gages. Further, the resistance change destroys the circuit balance of the original wheatstone bridge, so that the wheatstone bridge outputs a voltage signal proportional to the pressure.

In yet another embodiment, the MEMS pressure sensor may be a MEMS capacitive pressure sensor. The MEMS technology is utilized to manufacture a transverse barrier shape on a silicon chip, and an upper transverse barrier and a lower transverse barrier form a group of capacitance type pressure sensors. During operation, the upper horizontal barrier is pressed to move downwards, so that the distance between the upper horizontal barrier and the lower horizontal barrier is changed, and the capacitance between the plates is changed, namely delta pressure is equal to delta capacitance. The pressure is ultimately converted to an electrical signal.

As can be seen from the above description, the mems module in the above embodiments has higher sensitivity than other common sensors or receivers, and thus the electronic percussion melody musical instrument of the present invention has excellent performance.

The electronic percussion melody musical instruments have been described above in connection with the embodiments, and it can be known from this description that the utility model discloses an electronic percussion melody musical instrument can also conveniently realize multiple types of electronic percussion melody musical instruments through the connected mode of modularization concatenation (through concatenating different quantity's key module on the musical instrument body) in addition can promote the performance effect through the mode of judging the validity of percussion signal. In addition, the electric current with different magnitudes can be generated according to different striking strengths, so that the sensitivity of the electronic percussion melody musical instrument is improved.

Furthermore, the electronic percussion melody musical instrument of the utility model is made of metal material or composite material with low price, so that the problem that the traditional percussion musical instrument is limited in material selection and expensive is solved well. Additionally, the utility model discloses an electron percussion melody musical instrument still has the tone quality good, plays and feels good, the strong many advantages of interference killing feature to can satisfy different players to the multiple user demand of musical instrument.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and claims of this application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and claims of the present invention refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

The above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An electronic percussion melody musical instrument comprising an instrument body and a processing device, wherein

The instrument body configured to:

receiving a blow from the outside;

generating an effective striking signal and a to-be-detected striking signal according to the striking; and

sending the effective striking signal and the striking signal to be detected to the processing equipment;

the processing device, comprising at least a processor, and configured for:

receiving the valid strike signal;

acquiring the striking signal to be detected in parallel with the reception of the effective striking signal or within a preset time period after the effective striking signal is received;

comparing the signal intensity of the striking signal to be detected with an effective intensity threshold value or a threshold value range; and

and determining whether the striking signal to be detected is an effective striking signal according to the comparison result.

2. The electronic percussion melodic instrument of claim 1, wherein the processor is further configured to determine that the percussion signal to be detected is a valid percussion signal in response to the comparison result being that the signal strength of the percussion signal to be detected satisfies the valid strength threshold or threshold range.

3. The electronic percussion melodic instrument of claim 1, wherein the processor is further configured to determine that the percussion signal to be detected is an invalid percussion signal in response to the comparison result being that the signal strength of the percussion signal to be detected does not satisfy the valid strength threshold or threshold range.

4. The electronic percussion melody instrument of any one of claims 1 to 3, wherein the processor is further configured to acquire the percussion signals to be detected from the electronic percussion melody instrument in a round-robin and/or interrupted manner.

5. The electronic percussion melodic instrument of any one of claims 1 to 3, wherein the instrument body comprises a plurality of key modules and a body, wherein

Each of the key modules includes:

one or more keys configured to receive a strike from the outside;

one or more sensing units, wherein each sensing unit is used for sensing the striking and generating the effective striking signal and the to-be-detected striking signal based on the striking; and the body is connected with the plurality of key modules, and includes:

a cavity, the cavity contains:

a sounding module configured to output a musical tone signal corresponding to the valid striking signal;

wherein the processor is further configured to:

and when the striking signal to be detected is determined to be an effective striking signal, controlling the sounding module to output the piano tone signal corresponding to the striking signal to be detected.

6. The electronic percussion melodic instrument of claim 5, wherein the sound module comprises:

a storage unit configured to store sound source data associated with the one or more keys; and

an output unit configured to output a musical instrument sound signal corresponding to the sound source data;

wherein the processor is further configured to:

when the striking signal to be detected is determined to be an effective striking signal, sound source data associated with the striking signal to be detected is acquired from the storage unit according to the striking signal to be detected; and

and controlling the output unit to output the musical instrument sound signal corresponding to the sound source data.

7. The electronic percussion melodic instrument of claim 5, wherein the sensing unit comprises one or more of a piezo ceramic sensor, a pressure sensitive sensor, a flexible bending sensor, a vibration sensor, a micro-electro-mechanical system acceleration sensor, a micro-electro-mechanical system gyroscope, a micro-electro-mechanical system pressure sensor, and a micro-electro-mechanical system vibration sensor.

8. The electronic percussive melodic instrument of claim 5, wherein the plurality of key modules includes a main key module connected to one or more other key modules through the key interface, and the main key module is connected to the body in one of:

the piano body is fixedly connected with the main key module in an integrated manner; or

The body includes at least one body interface that cooperates with the key interfaces to connect the body with the master key modules.

9. The electronic percussive melodic instrument of claim 5, wherein the body comprises one or more body interfaces cooperating with the key interfaces to connect the body to the key modules, the plurality of key modules being connected to the body in one of:

the body connects the body with each of the plurality of key modules through the plurality of body interfaces; or

The plurality of key modules comprise a main key module which is fixedly connected with the organ body in an integrated mode, and the rest plurality of key modules are matched with the corresponding plurality of organ body interfaces through respective key interfaces so as to be connected with the organ body.

10. The electronic percussive melodic instrument of claim 8, wherein the key interface and body interface comprise one or more of the following types of interfaces:

a short-range wireless communication interface;

a wired communication interface; and

the mechanical connection interface.